[advertisement]

Grinding

INDUSTRY NEWS | 2025-02-26

Reshoring In Action with C&B Machinery

C&B Machinery supported the reshoring of a 30” double-disc grinding machine for a major U.S. automotive manufacturer’s transmission plant. Originally installed in an overseas facility, this machine is now being brought back to the U.S., where it will be retooled, reautomated, and upgraded to enhance performance and efficiency for a Michigan-based production program.

PRODUCT NEWS | 2024-12-12

Nidec Launches Latest ZFA Gear Grinders

The two ZFA series gear grinders are designed to perform high-speed and high-precision finish machining on gears. The two models are each designed for a different gear size range, with ZFA160 capable of handling gears with an external diameter of up to 160 mm, and ZFA260 accommodating gears with an external diameter of up to 260 mm. Capable of meeting the increasingly sophisticated users’ needs, both ZFA160 and ZFA260 can mass-produce gears with a gear accuracy level equivalent to ISO 3 (JIS level N3).

PRODUCT NEWS | 2024-10-22

Walter Introduces Automated Tool Production System

With the new Automated Tool Production (ATP) system, Walter now offers a comprehensive automation solution for cutting tools. ATP networks grinding, eroding and measuring machines from Walter, as well as upstream and downstream machines from other system partners in the production process.

TECHNICAL ARTICLES | 2024-08-15

Hard Fine Machining of E-Components in the Border Area of Quality Requirements and Productivity

Overall developments and widespread public awareness of man-made climate change are transforming the way people think. The awareness has inspired a shift towards a more ecologically sustainable way of life. Driven by policymaking and technological innovation, ambitious efforts are underway to reduce greenhouse gas emissions to curb the rise in average temperatures. A key focus of these efforts is the mobility sector. 

PRODUCT NEWS | 2024-08-15

Weiler Abrasives Announces New Blending Disc Product

Weiler Abrasives has announced its new blending disc product lineup that is ideal for a wide range of blending, weld cleaning and polishing needs. The blending discs can help operations save time and money through faster material removal and longer product life in such applications as shipbuilding, structural fabrication and welding. 

FEATURE ARTICLES | 2024-07-23

Understanding Bevel Gear Grinding

The world of bevel gear grinding is a complex topic. How do you determine which grinding and dressing parameters to select for a desired surface finish? What type of grinding wheel should be used? What type of dresser should be used? How do all these factors affect the gear noise and quality levels? These are some questions that will be addressed in this article.

PRODUCT NEWS | 2024-07-23

Adelbert Haas Offers Single Machining Operation for Aviation Components

The Curvic coupling from the aviation sector is a critical component used in helicopters. Previously, the external helical gearing was manufactured on one machine and the curvic coupling gearing on a second machine. The external and internal cylindrical grinding was then carried out on a third machine in two consecutive process steps.

[advertisement]
FEATURE ARTICLES | 2024-05-10

Anatomy of a Rebuild

From the outside, Gallmar Industries, nestled into an Oshkosh, WI, neighborhood, looks like any unassuming, medium-sized gear shop. Then take a plant tour with Gallmar’s VP of Operations Kenan Zolota—and prepare to be amazed. The facility stretches on like the Army’s warehouse at the end of Raiders of the Lost Ark, with everything from gear cutting to heat treat, gear grinding to inspection, all under one roof. Gallmar’s breadth of product line is in evidence too: defense-related transmission gears, 60-in. diameter internal gears for mining equipment, axle components for fire/ rescue trucks five feet in length, right down to a bin of brass ammunition casings that Zolota says are a special order.

EVENT | 2024-04-12

Gleason Gear Process Theory Cylindrical and Bevel Gears

Attendees will gain familiarization with spur, helical, bevel and hypoid gear nomenclature, the use of various cutting methods in Gleason machines as well as the tooling and processes used in gear manufacturing. Topics include gear classification, cutting methods, blank tolerances and configurations, inspection, testing, and workholding. 


INDUSTRY NEWS | 2024-03-06

PTG Holroyd’s Helical Rotor and Thread Grinding Machines

UK-based PTG Holroyd has announced that, in the future, all models in its TG Series of ultra-precise helical rotor and thread grinding machines will be equipped with the Siemens digitally native Sinumerik One CNC as standard.

INDUSTRY NEWS | 2024-02-23

Next Level Control for PTG Holroyd’s Helical Rotor And Thread Grinding Machines

UK-based PTG Holroyd has announced that going forward, all models in its TG Series of ultra-precise helical rotor and thread grinding machines will be equipped with the Siemens digitally native Sinumerik One CNC as standard. 

PRODUCT NEWS | 2024-02-12

Nidec Machine Tool Develops Polish (Grinding) Method to Process Internal Gears for Mass-Production

Nidec Machine Tool Corporation (“Nidec Machine Tool” or the “Company”), a group company of Nidec Corporation, today announced that it has developed the a high-accuracy polishing (grinding) method to machine internal gears for mass production that are used for automobiles’ drive units and transmissions and robots’ joints. While there are already high-accuracy polish-machining methods for external gears for mass production, no such methods have been available for internal gears. After conducting research focused on this point, the Company has achieved positive results in securing the level of accuracy and production that conventional grinding, honing, or skiving methods could not.

PRODUCT NEWS | 2024-02-12

Kapp Niles E-Mobility Solutions

For over 10 years, the mechanical engineering company Kapp Niles has been working intensively on the topic of gears in e-mobility and has established itself as a pioneer in this rapidly growing industry. With a focus on innovation and quality, Kapp Niles offers customized solutions for the production of gearboxes and gears in electric vehicles.

FEATURE ARTICLES | 2023-12-11

Polish Grinding of Gears

This article introduces the process of polish grinding of gears. Improved surface quality increases the overall efficiency of gearboxes, resulting in reduced friction and torque loss, higher power density, and noise-optimized gears (lower NVH); all these factors are highly relevant, especially for electric drives. When Reishauer developed polish grinding in 2012, the process aimed to improve the efficiency of ICE engine transmissions, and the set goals were easy to achieve. Today, in 2023, the situation is dramatically different. While an ICE engine operates at around 3,000 rpm and supplies acoustic masking of the gear noise, EV drivetrains feature up to 20,000 rpm and offer no such masking.

[advertisement]
PRODUCT NEWS | 2023-12-11

ANCA MX7 Linear Assists Clortech with Tooling Needs

Founded in 1987 by Clorindo Mattei, Clortech Precision Cutting Tools is a family business with wife Carmela handling bookkeeping, while son Patrick is the vice-president of production and sisters Emilia and Mena are the managing director and quality assurance director respectively. The company is a Montreal manufacturer of custom precision tools that sells to various industries including aerospace, recreational vehicles, rail and automotive. Products include shafts, gauges, broaches, bushings, extra-long reamers, special diameter formed end mills, special contouring tools.

INDUSTRY NEWS | 2023-11-10

United Grinding Opens Subsidiary in Southeast Asia

United GrindingAsia Pacific (UGAP) Pte. Ltd. is the new group subsidiary of United Grinding Group (UGG). UGG has had a presence in Southeast Asia for many years thanks to representatives and the Walter Ewag Asia Pacific subsidiary. This new group strengthens the United Grinding's presence in the region with grinding, eroding, laser, and measuring machines.

EVENT | 2023-11-09

IPTEX 2024

IPTEX 2024 (Pune, India) is an important event for all relevant stakeholders in automobile, aerospace, or energy as well as manufacturers, buyers, partners, and consultants. Focus industries include mechanical power transmission, electrical power transmission, linear motion drives, fluid power and IoT/smart technology. IPTEX will provide a consistent channel of communication to the members of this industry to come together under one roof and participate in technical seminars, share knowledge and expertise with industry leaders and to be a part of discussion on policy codes, standards and challenges faced by the industry.

INDUSTRY NEWS | 2023-10-12

PTG Holroyd Wins Siemens' Global Award for Digital Transformation at EMO Hannover

EMO Hannover 2023 didn’t simply provide PTG Holroyd with a platform to showcase its industry-leading helical rotor and gear milling and grinding machines to a global audience. The UK-based machine tool manufacturer was presented with Siemens’ Digital Transformer award during the event.

INDUSTRY NEWS | 2023-10-11

Gear Technology, Gear Cutting Tools and Automation Systems Highlights from Liebherr

Are you looking for a solution to ensure quality and increase productivity in gear manufacturing? There is a clear trend towards saving resources and sustainable manufacturing. Here Liebherr highlights their gear technology, gear-cutting tools, measuring technology, and automation systems.

VIDEO | 2023-09-25

Inside the DMG Mori Portal Series

Automobile manufacturers can develop ever more sophisticated car body molds because they can rely on 5-axis portal machines as the backbone of automotive tool and die making. The aerospace industry achieves unprecedented part quality thanks to full technology integration of milling, turning and grinding, ensuring maximum passenger safety. Thanks to 5-axis technology in large format, portal machines ensure that hydroelectric power can be converted into energy. Mechanical engineering also benefits worldwide from portal machines from Pfronten, which repeatedly demonstrate their performance in demanding machining operations such as gear production. DMG Mori has more than 1,400 Portal machines installed worldwide.

INDUSTRY NEWS | 2023-09-19

ANCA's FX7 Ultra for Small Tools

New software, hardware, and design features significantly improve surface finish, accuracy, and controlled runout, ensuring batch consistency from the first ground tool to the last. The FX7 Ultra is a refined solution for precision grinding in industries that rely on small tools, including electronics, telecommunications, medical devices, aerospace, automotive, die mold, and general machining. 

INDUSTRY NEWS | 2023-09-07

Star Cutter Acquires Tru Tech Systems

Star Cutter Company has acquired Tru Tech CNC grinding systems from Resonetics (Nashua, N.H.), assuming all design and manufacturing of the Tru Tech high precision CNC grinding machines currently performed at the Michigan facilities in Mt. Clemens and Lewiston. Additionally, Star Cutter secures the service, training, and spare parts support for Tru Techs’ vast installation base across North America and Europe.

INDUSTRY NEWS | 2023-08-29

United Grinding To Highlight Latest Offerings At EMO Hannover 2023

At EMO 2023 in Hannover, Germany, the United Grinding booth in hall 11, booth E34 will showcase 16 machines, innovative technology, and updates from the Customer Care team. The United Grinding Group, one of the world's leading manufacturers of grinding, eroding, laser and measuring machines, is considered one of the pioneers in the development of innovative technologies in the manufacturing industry. Fittingly, ”Innovate Manufacturing” is the motto of this year’s EMO in Hannover. 

FEATURE ARTICLES | 2023-08-28

ARGUS “Swarm-Based” Gear Grinding Expertise

This article describes a cloud-based process and machine component monitoring system called ARGUS. The term “swarm” is used for a large population of gear-grinding machines of individual and independent customers connected to the ARGUS system and the ARGUS cloud. These “swarm” machines permanently feed their anonymized process data into a common cloud database. Reishauer uses this database for big data analytics to discover patterns that indicate successful process and machine component behavior patterns worth integrating into the ARGUS algorithms and propagate them across the complete ARGUS customer base.

FEATURE ARTICLES | 2023-08-28

Hot Technologies to Help Cool the Planet

2023 is shaping up to be our planet’s hottest year on record, and the wind energy industry is feeling the heat. The GWEC (Global Wind Energy Council) says that the rate of wind turbine installations will need to quadruple globally by the end of the decade if we’re to achieve the IRENA’s (International Renewable Energy Agency) goal of net zero carbon emissions by 2050—and keep the average annual temperature worldwide from increasing more than the predicted 1.5° C. Fortunately, “net zero” commitments are gathering global momentum. Before year’s end, total global windpower is expected to reach a historic milestone of 1 TW of installed capacity, eliminating 1.2 billion tons of CO2 annually, roughly the equivalent of all the carbon emissions of South America.

INDUSTRY NEWS | 2023-08-11

TCI Precision Metals Expands Grinding Services

TCI Precision Metals has announced the expansion of its grinding services to meet the needs of customers wanting more value-added materials processing. Customers who have traditionally sourced materials and shipped them to and from TCI Precision Metals for specific grinding requirements can now eliminate additional in-house processing, shorten materials lead times, and increase production efficiency. TCI can source materials mill-direct, precision cut oversize, then grind or mill two or six sides to close tolerance customer specifications.

FEATURE ARTICLES | 2023-07-27

Efficient Turnkey Machining of Complex E-drive Components

For the transmissions of electric vehicles to develop the desired high torque under all driving conditions, a very large gear ratio is needed, which requires high speeds. And to ensure sufficient momentum at all speeds and enable the driver to accelerate without shifting gears, the electric drive must achieve up to 15,000 rpm, which is about three times that of a typical combustion engine. This puts a lot of strain on the rotor shaft. The manufacturers of rotor shafts are thus facing new challenges, such as the significantly lower shape and position tolerances and the need for greater machining precision.
INDUSTRY NEWS | 2023-07-25

New C&B Clamp Bore Grinding Machine Offers Simplified Design

C&B Machinery (C&B) announced the completion of their newly redesigned Clamp Bore Face Grinding Machines. After months of planning, redesigning, and building the machines, C&B is excited to announce the latest CBVR-2F-2S model Clamp Bore Grinders.

INDUSTRY NEWS | 2023-06-02

Ross Wegryn-Jones Joins Bourn & Koch

Bourn & Koch, Inc. of Rockford, IL, is pleased to report that Ross Wegryn-Jones has recently joined the company as our National Sales Manager. Ross will be responsible for the sales of gear manufacturing machines, precision grinding machines, and specialty machine tools for unique manufacturing applications. This includes Bourn & Koch horizontal gear hobbers; Fellows gear shapers; Blanchard rotary surface grinders, and Bourn & Koch’s new MT3 vertical grinding machine. 

PRODUCT NEWS | 2023-05-24

Two-in-One: CNC Precision Grind Both Worms and Gears

Manufacturing high-accuracy worm gears and screws alongside precision spur and helical gears has traditionally required the use of two quite different CNC grinding machines. Thanks to PTG Holroyd’s newly launched HG350-WG worm and gear grinding center, however, just one machine can now complete both tasks.

PRODUCT NEWS | 2023-05-23

MTB Introduces Recontrol/Retrofit Package for Larger Form Gear Grinding Machines

Machine Tool Builders Inc. has introduced a comprehensive new recontrol/retrofit package for larger-capacity profile grinding gear machines with outdated controls that add highly desirable performance at a fraction of the cost for new machinery.

PUBLISHER'S PAGE | 2023-05-22

EVs are Driving Technology in the Gear Industry

A significant amount of work is being done to advance the technology of gears specifically for use in electric vehicles. No longer hidden by the noise of the internal combustion engine, the transmission has taken center stage as the noisiest component in most electric-driven cars.

FEATURE ARTICLES | 2023-05-22

Industrial Methods for Grinding Burnout Testing

When grinding steel parts, the surface of the part can "burn" if too much heat is applied in a short time. Grinding burn refers to all those structural changes in edge zones of steel parts that are caused by grinding processes in steels due to the thermal energy introduced. Grinding burn can mainly occur in the form of tempering zones or new hardening zones.

TECHNICAL ARTICLES | 2023-05-22

Force Modeling in Generating Gear Grinding Considering the Grinding Worm Topography

For the research developed in this work, an existing simulation model of the generating gear grinding process based on a penetration calculation approach is used. Further, an extension of the model considering a realistic modeling of the grinding worm topography and the macro movements of the grinding worm during the process is presented. The result of the simulation is the microinteraction characteristics throughout
the grinding of the gear flank. In the end, the information about microinteraction characteristics obtained will be used for the calculation of force and energy in generating gear grinding.

EVENT | 2023-05-12

Fabtech 2024

Fabtech provides a 'one-stop-shop' for metal forming, fabricating, welding, and finishing trade show. Attendees can meet with 1,300+ suppliers, discover innovative solutions, and find the tools to improve productivity and increase profits. There is no better opportunity to network, share knowledge and explore the latest technology.

PRODUCT NEWS | 2023-05-10

United Grinding Adds Seven New Products to Lineup

United Grinding North America announced today the expansion of their extensive range of grinding and measuring equipment with seven new products being unveiled by three of the company's brands. 

PRODUCT NEWS | 2023-04-05

Suhner to Unveil New Robotic Electric Force Compliance System at AUTOMATE

Recognizing the role robotics plays in adding efficiency and lowering production costs for manufacturers of all types and sizes, Suhner continues to expand its robotics offering. The fully electric EFC-02 delivers precise, constant force throughout robotic grinding, sanding and deburring processes—resulting in superior, consistent surface quality. 

VIDEO | 2023-03-29

Gear Hobbing and Power Skiving

Gear hobbing and power skiving processes can be used on the Gleason 100PS, including additional processes like brushing and/or turning operations. Due to the unique flexibility of the 100PS, all gears of a typical e-bike transmission can be produced on a single machine.

INDUSTRY NEWS | 2023-03-01

SAACKE Announces New Managing Director Team

SAACKE Precision Tools and Grinding Machines, a family business started in 1892, has announced a Mr. Georg Saacke as president to lead a new management team.

EVENT | 2023-03-01

Gleason e-Drive Days 2023

Gleason's e-Drive Days online webinar addresses the specific requirements and challenges of e-Drive transmission manufacture, with particular attention to minimizing gear noise. The event showcases the latest developments in design, simulation, cutting and hard finishing, as well as suitable inspection and analysis tools to achieve most efficient and quiet gears. Day one examines gearbox design and optimization; day two looks at the manufacturing of e-Drive gears; day three offers in-process inspection and gear noise analysis. 

INDUSTRY NEWS | 2023-02-13

State of the Gear Industry Perspectives: Forest City Gear

State of the Gear Industry Perspectives takes an in-depth look at the challenges and opportunities in gear manufacturing today and in the future. Our seventh installment online is an interview with Kika Young, president, and Jared Lyford, director of manufacturing operations at Forest City Gear (FCG). 

FEATURE ARTICLES | 2023-02-13

Polished Up!

The trend towards hard fine finishing of gears for automotive transmissions is accelerating. In recent years, the focus has been on increasing the efficiency of gears in order to make optimum use of the narrow gear ratio range, gear by gear, and to reduce fuel consumption. Surface finish, in particular, is under increased scrutiny since it plays such a decisive role in achieving the noise and efficiency requirements of gear units for today’s EV applications.

INDUSTRY NEWS | 2023-02-09

State of the Gear Industry Perspectives: Kapp Technologies

State of the Gear Industry Perspectives takes an in-depth look at the challenges and opportunities in gear manufacturing today and in the future. Our sixth installment online is an interview with Shane Hollingsworth, vice president of sales, Kapp Technologies.

INDUSTRY NEWS | 2023-02-06

State of the Gear Industry Perspectives: Helios Gear Products

State of the Gear Industry Perspectives takes an in-depth look at the challenges and opportunities in gear manufacturing today and in the future. Our fifth installment online is an interview with Adam Gimpert, president, Helios Gear Products.

INDUSTRY NEWS | 2023-02-02

State of the Gear Industry Perspectives: Nidec Machine Tool America

State of the Gear Industry Perspectives takes an in-depth look at the challenges and opportunities in gear manufacturing today and in the future. Our fourth installment online is an interview with Scott Knoy, vice president of sales at Nidec Machine Tool America. 

INDUSTRY NEWS | 2023-01-31

State of the Gear Industry Perspectives: Liebherr

State of the Gear Industry Perspectives takes an in-depth look at the challenges and opportunities in gear manufacturing today and in the future. Our third installment online is an interview with Peter Wiedemann, managing director, Liebherr-Verzahntechnik GmbH and Scott Yoders, vice president sales, Liebherr Gear Technology, Inc. 


INDUSTRY NEWS | 2023-01-30

State of the Gear Industry Perspectives: Klingelnberg

State of the Gear Industry Perspectives takes an in-depth look at the challenges and opportunities in gear manufacturing today and in the future. Our second installment online is an interview with Christof Gorgels, vice president, innovation and technology at Klingelnberg. 

INDUSTRY NEWS | 2023-01-30

United Grinding North America Expands Distribution Network in Mexico and US

United Grinding North America announced today the expansion of their distribution network with the addition of Intermaq, a leader in the machine tool industry in Mexico. Intermaq will represent the full line of equipment offered by United Grinding  North America and will be instrumental in expanding the footprint of the precision CNC grinding market in Mexico. 

INDUSTRY NEWS | 2023-01-27

State of the Gear Industry Perspectives: Gleason Corporation

State of the Gear Industry Perspectives takes an in-depth look at the challenges and opportunities in gear manufacturing today and in the future. Our first installment online is an interview with Udo Stolz, vice president of sales and marketing at Gleason Corporation.

EVENT | 2023-01-20

2023 Liebherr Skiving Day

With expert presentations, live demonstrations and the latest digitalization solutions, the 2023 Liebherr Skiving Day is once again the focal point when it comes to all things gear skiving.

INDUSTRY NEWS | 2023-01-19

Renowned Indian Gear Manufacturer Chooses NUM for CNC Grinding Machine Upgrade Project

Bharat Gears Ltd., one of India’s largest gear manufacturers, has successfully retrofitted a Reishauer RZ361A gear grinding machine with an advanced NUM Flexium+68 CNC system.

INDUSTRY NEWS | 2022-12-02

JTEKT Introduces New High-Productivity Silicon Wafer Disc Grinder

JTEKT recently demonstrated a new double-disc horizontal grinder that simultaneously grinds both sides of silicon wafers to +/- 1 micron from as-sliced condition. The DXSG320 performance represents a massive improvement in accuracy and productivity over the single-spindle vertical grinders common in the chip industry today which grind to 3-4 microns, according to the company.

INDUSTRY NEWS | 2022-11-18

STUDER Introduces the UniLoad Loading System

STUDER focuses on universality and speed with the uniLoad loading system. The automatic loading system enables users of the S31 and S33 external cylindrical grinding machines to increase quality and productivity.

INDUSTRY NEWS | 2022-10-12

Liebherr Offers Machine Training Center in Kempten

The Machine Training Center (MTC) of Liebherr-Verzahntechnik GmbH in Kempten offers bright training rooms equipped with the latest technology the world of gear making has to offer including an LC 280 gear cutting machine with ChamferCut device, an LGG 280 gear grinding machine and a WGT measuring machine. 

EVENT | 2022-09-22

AGMA Operator Precision Gear Grinding

Explore gear grinding processes, machine kinematics and set-up, pitfalls, failures and expectations related to finish ground gearing.  Learn definitions of gearing component features, process steps from blanking, through heat treatment to finished part ready to ship.  Study aspects of Quality Assurance, Inspection Documentation and corrective actions for measured non-conformances.  Understand pre-heat treat, heat treatment and post-heat treatment operations including the hows and whys to produce finished gears that conform and perform to end user expectations.

INDUSTRY NEWS | 2022-09-07

DVS Technology Group at IMTS 2022

Integrated manufacturing solutions for machining processes from the blank to the finished workpiece are the focus of the DVS TECHNOLOGY GROUP's trade fair appearance at the world's leading trade fair for metalworking IMTS 2022 in Chicago.

INDUSTRY NEWS | 2022-08-25

Nidec and Wenzel Announce Technical Partnership for IMTS 2022

IMTS 2022 will host a variety of technologies that will set the tone for manufacturing innovation in the years to come. At the forefront is the integration of data for process control, providing outstanding solutions to manufacturers. Wenzel America and Nidec’s collaboration started with the mutual drive for serving their customer with excellence through data management. 

INDUSTRY NEWS | 2022-08-23

Oelheld Offers Technical Expertise for Machining Applications at IMTS 2022

Oelheld US will be located in Booth #237475 in the North Hall. Oelheld technical experts will be on hand to discuss grinding, erosion, precision machining, and filtration, among other topics.

INDUSTRY NEWS | 2022-08-19

Haas Schleifmaschinen Focuses on High Performance at IMTS 2022

Forming tools are expensive, often made from carbide and tool steel. Carbide grinding is often the first choice today because customer requirements have increased and continue to increase in terms of complexity, dimensional accuracy and reproducibility. Apart from that, production must also be significantly more economical.

INDUSTRY NEWS | 2022-08-17

Klingelnberg Highlights Gearbox Technology at AMB 2022

System-supplier Klingelnberg will be back at AMB (Booth C41, Hall 5), where it will be highlighting solutions for smooth-running gearboxes. The exhibit will feature the Höfler Cylindrical Gear Grinding Machine Speed Viper, the Klingelnberg Precision Measuring Center P 40 and the newly developed Höfler Cylindrical Gear Roll Testing Machine R 300. 

PRODUCT NEWS | 2022-08-09

EMAG Presents E-Mobility and Digital Solutions at IMTS 2022

EMAG will highlight productive, and at the same time, flexible manufacturing solutions for electromobility at IMTS. Among other things, the focus is on the vertical pick-up lathes of the VL series, which EMAG now delivers IoT-Ready.

INDUSTRY NEWS | 2022-08-09

Beyond Closed Loop but Lean

When it comes to an early identification of noise problems in the drivetrain one has to take data analytics and its integration in the manufacturing process into account. The big vision here, in particular, is preventive quality. By evaluating sensor data of the machining process, it promises to predict whether a gear is ok or not ok. 

INDUSTRY NEWS | 2022-08-08

Tyrolit Acquires Egeli Egesan Group

In acquiring the Turkish Egeli Egesan Group the Tyrolit Group continues to implement its business expansion strategy and has further strengthened its position on the international abrasives market.

INDUSTRY NEWS | 2022-08-08

Kennametal Expands Beyond Evolution Platform

Kennametal has introduced the new Grooving Universal Positive Profiling geometry (GUP-V), expanding on its Beyond Evolution grooving & cut-off platform. With the addition of the new V-shaped single-sided insert, Beyond Evolution can cover now more applications than ever and helps to save tooling cost.

INDUSTRY NEWS | 2022-08-04

Sandvik Coromant Holds Automotive Transmission Machining Event at New Training Center

When Sandvik Coromant opened its new Center Mebane facility last year in Mebane, NC, near Raleigh the vision was to use it as a hub for training, R&D testing, customer projects and, most of all, an opportunity for comprehensive customer and partner engagement.

INDUSTRY NEWS | 2022-07-20

Klingelnberg Offers Gear Production Technology at IMTS 2022

Klingelnberg will be featuring the latest gear production, calculation and measuring technologies during IMTS in Booth #236935.

INDUSTRY NEWS | 2022-07-15

Liebherr Touts Latest Gear Technology at IMTS 2022

Liebherr Gear Technology will be displaying a variety of technologies at Booth #236914 (North Hall) during IMTS 2022. 

INDUSTRY NEWS | 2022-07-08

Mazak SmoothEz CNC Allows for Easy Programming

The MAZATROL SmoothEz CNC from Mazak has a graphical, intuitive programming mode that minimizes the use and understanding of G-codes. Users answer conversationally displayed questions about the workpiece, and the control constructs the program automatically. 

INDUSTRY NEWS | 2022-07-05

Star Cutter to Highlight NXT Tool Grinder at IMTS 2022

Star Cutter Company will be displaying its newest generation automated NXT 5-axis tool grinder in Booth #237013 at IMTS 2022 featuring detailed graphics that enable visitors to take a self-guided tour of the machine, which will be shadow grinding during the show. The display system will feature the 28 kW spindle option and four-station wheel change capability. It will be equipped with a robot loader and flat blade/insert clamping fixture for live demonstration of automated production. Videos to showcase tooling for form cutters, boring bars and medical hip rasps will also be on display.

INDUSTRY NEWS | 2022-06-30

United Grinding to Feature Cylindrical Grinder at IMTS 2022

 At IMTS 2022, United Grinding North America will be featuring the STUDER S131r cylindrical ID-radius grinding machine for I.D. grinding operations where maximum precision is paramount.

INDUSTRY NEWS | 2022-06-29

Index Establishes Service to Rebuild Tool Holders in North America

Effective June 1, 2022, Index has established a dedicated service department to rebuild tool holders at its North American headquarters in Noblesville, Indiana. Previously, the company processed all such rebuilds at its parent company in Germany. By investing in bringing this capability to the United States, Index expects to cut lead times for rebuilds by 50% - 70%.

FEATURE ARTICLES | 2022-06-27

Large Gear Grinding

The way to increase production, especially with the largest gears, is to decrease nonproductive time with improved strategies.

INDUSTRY NEWS | 2022-06-24

Nidec to Exhibit Gearmaking Machines at IMTS 2022

Nidec Machine Tool (Wixom, Mich.), responding to the needs of the industry, is debuting the new GE15HS gear hobbing machine at IMTS 2022 in Booth #237036. Emphasizing high speed, precision and efficiency, the new machine produces gears for electric and hybrid cars, as well as for robotic and automation applications.

INDUSTRY NEWS | 2022-06-21

Gleason Corporation Announces the Passing of James S. Gleason

It is with great sadness Gleason Corporation announces the passing of James S. Gleason, a Gleason board member and former chairman and CEO of the company who died on June 17th at the age of 88 years old.  Jim, a great grandson of the company’s founder William Gleason, contributed to the company in various roles, continuing to serve as a director on the board up until his death. 

INDUSTRY NEWS | 2022-06-16

Norton Highlights Xtrimium Gear Grinding Wheels at IMTS 2022

At IMTS 2022, Norton ׀ Saint-Gobain Abrasives (Booth #237042, North Hall) will offer a portfolio of gear grinding products specifically designed by category to provide higher profile accuracy, supreme form holding and burn-free grinding in worm, profile, and bevel applications. Highlighting the range is an innovative dual-worm wheel design that enables two operations in one grinding wheel, substantially saving time and cost. 

INDUSTRY NEWS | 2022-05-25

Marposs Acquires Grinding Machine Measuring Technology from Jenoptik

Marposs has announced the acquisition of Jenoptik’s (Jena, Germany) non-optical process measuring technology business for grinding machines, formerly known as Movomatic.

FEATURE ARTICLES | 2022-05-19

Making Gear Grinding Transparent

INDUSTRY NEWS | 2022-05-10

DMG MORI Technology Center Opens in Boston

DMG MORI’s new Technology Center in the heart of Somerville, in Northeast USA, will be a hub for research and development of new digitization solutions and processes for customers worldwide. 

INDUSTRY NEWS | 2022-05-06

Klingelnberg Examines Gear Grinding Challenges Today

Within the last decade, hard finishing technologies become highly relevant. Increasing the power density of a gearbox requires precisely machined gears without heat distortions. Especially in noise-sensitive applications, both honing and grinding are often applied.

VIDEO | 2022-05-06

Kapp Niles ZP 20 Set-up

Watch an installation of a ZP 20 gear profile grinding machine from Kapp Niles. 

PRODUCT NEWS | 2022-05-03

Jorgensen Total Chip Processing Boosts Recycle Value

As a result of its recent partnership with S.F.H., Jorgensen Conveyor and Filtration Solutions now serves manufacturers as a single source for total metalworking chip and coolant processing systems. With standalone or fully integrated systems that transport, shred, wring and briquette chips and sludge, manufacturers can reduce chip volumes by as much as 90% and significantly increase their chip recycling value. 

INDUSTRY NEWS | 2022-05-03

WFL Technology Meeting Highlights Machining Innovations

The WFL Technology Meeting takes place June 21-23, 2022. Visitors can look forward to expert discussions on the latest industry trends and developments. Highlights during the event include machine demonstrations, measurement technologies, automation solutions and more. 

EVENT | 2022-05-03

WFL Technology Meeting 2022

The WFL Technology Meeting takes place June 21-23, 2022. Visitors can look forward to expert discussions on the latest industry trends and developments. Highlights during the event include machine demonstrations, measurement technologies, automation solutions and more. 

INDUSTRY NEWS | 2022-05-02

Haas Multigrind Offers Machine Technology at GrindingHub

The Haas Booth C50 Hall 10 at GrindingHub will include the Multigrind Radical, Multimation and the Multigrind CB XL series. In addition, the Multigrind CU, the Multigrind CA and the Multigrind CB will be featured during the show.

PRODUCT NEWS | 2022-04-28

3M Technologies Address E-Mobility Trends

The automotive industry is evolving. The trend toward more electromobility is also changing the way cars are being manufactured. In some cases, this has a serious impact, not only on automakers themselves, but also on suppliers. Jürgen Hechler, Global Application Engineering Leader at 3M, is nevertheless confident: "We expect the demand for high-precision abrasives to continue to grow, despite the discussion about electromobility." Among other things, 3M supplies the automotive industry with abrasives for machining gears and shafts.

FEATURE ARTICLES | 2022-04-25

Kapp Niles Examines Intelligent Generating Grinding for E-mobility

Fully electric vehicle drives usually require two-stage, non-switchable transmissions. One would think that this greatly simplifies the production. Finally, the described transmission structure has just four gears, distributed on the drive shaft, the second stage with fixed wheel and intermediate shaft as well as the axle drive wheel. But the conditions are not that simple: First of all, the engine speeds of the electric drive with up to 16,000 rpm are much higher than those of the combustion engine. For this purpose, electric motors deliver an almost constant torque over a wide speed range. Unlike the combustion engine, it is already attached to the transmission from zero speed. In addition, there is an additional boundary condition that makes production much more demanding than with the conventional powertrain.

INDUSTRY NEWS | 2022-04-20

Weiler Introduces Full Line of Foundry Abrasives

Weiler Abrasives has announced the availability of its Tiger abrasives line designed to deliver maximum performance in the most demanding foundry applications. With solutions to address all grinding applications in the cleaning room, Tiger products help decrease cycle times and improve operator experience. 

INDUSTRY NEWS | 2022-04-19

Kapp Niles KX 300 P Offers Machining Flexibility

The Kapp Niles KX 300 P gear center offers machining flexibility due to various machining processes. The machine features direct drives in both the tool and workpiece spindles.

EVENT | 2022-04-19

2022 US Grinding Days Seminar

US Grinding Days Seminar (3M and Liebherr) is a two-day program designed to provide attendees with industry insights into the latest gear grinding methods, technology, and related topics.

INDUSTRY NEWS | 2022-04-15

Oelheld Offers Grinding Oil Performance Benefits

Many see the fluids as an unnecessary evil to the grinding process, failing to realize that selecting the right grinding fluid can lead to significant improvements in cycle time, surface quality, finishes, secondary operations, such as tool coatings. Oelheld has put together a short article on grinding oil considerations.

INDUSTRY NEWS | 2022-04-14

Karl M. Weiler Receives Lifetime Achievement Award

Weiler Abrasives is pleased to announce that Karl M. Weiler, former president, has received the John J. Buckley Lifetime Achievement Award from the Industrial Supply Association (ISA). 

INDUSTRY NEWS | 2022-04-06

Process Variables for Gear Grinding

Tremec and Klingelnberg have been working together with regard to tool and gear measuring machines since 1993.  They recently collaborated on transmission technology with Speed Viper machine tools. 

INDUSTRY NEWS | 2022-04-04

Kapp Niles ZX Series Offers Machine Flexibility

The Kapp Niles ZX series provides high-end productivity, even for bigger gears and larger modules. It is driven by an electrical high-accuracy direct drive, providing a high level of positioning accuracy even for the profile grinding process.

INDUSTRY NEWS | 2022-02-09

United Grinding Receives UX Design Awards Nomination for C.O.R.E.

Customer Oriented Revolution (C.O.R.E.), from the United Grinding Group, has been nominated in the UX Design Awards for its outstanding u...
INDUSTRY NEWS | 2022-02-04

E-Drive Gear Inspection and Noise Analysis

Gleason offers technology that caters to e-Mobility applications.
PRODUCT NEWS | 2022-02-01

Junker Offers 6S and 6L Platform Grinding Machines

New linear motors and hydrostatic guides in the 6S and 6L grinding machine series open up new potential. Higher speeds, various detailed ...
INDUSTRY NEWS | 2021-12-14

Modified Crowning with Klingelnberg

Klingelnberg examines how engine management in electrically driven cars requires a very different specification of the driveline and the gearbox.
INDUSTRY NEWS | 2021-11-30

United Grinding Introduces RoboLoad System

With the introduction of the new STUDER roboLoad system, United Grinding now offers manufacturers simple, seamless part-loading automatio...
EVENTS | 2021-11-01

Calendar

Calendar of early 2022 events
INDUSTRY NEWS | 2021-11-01

Industry News

he complete Industry News section from the November/December 2021 issue of Gear Technology.
PRODUCT NEWS | 2021-11-01

Product News

The complete Product News section from the November/December 2021 issue of Gear Technology.
INDUSTRY NEWS | 2021-10-15

United Grinding Offers Latest Machine Tool Tech at C.O.R.E.

On October 13-14, United Grinding North America opened its doors for Evolution to Revolution, a precision CNC grinding industry event fil...
INDUSTRY NEWS | 2021-10-11

United Grinding Partners with Titans of CNC for Grinding Education

United Grinding has partnered with Titans of CNC, the well-known global manufacturing education provider, to support specialized educatio...
INDUSTRY NEWS | 2021-09-24

United Grinding Offers Evolution to Revolution Event

Evolution to Revolution is a two-day event in Miamisburg, OH where attendees can interact with CNC grinding and precision experts. Expert...
INDUSTRY NEWS | 2021-09-01

Industry News

The complete Industry News section from the September/October 2021 issue of Gear Technology
INDUSTRY NEWS | 2021-07-09

Junker Develops All-in-One Grinding Machine

Sullair LLC. located in Michigan City Indiana, a Junker customer since 2011 has changed their finishing process to eliminate the demand t...
FEATURE ARTICLES | 2021-07-01

Teaming Up to Solve Bevel Gear Grinding Application Challenges

Norton | Saint-Gobain Abrasives and Gleason Works Collaborate to Achieve a High Performance Gear Grinding Solution
FEATURE ARTICLES | 2021-07-01

Increasing Energy Efficiency through Improved Gear Surfaces in e-Mobility

With e-Mobility, there are constantly increasing demands on service life.
TECHNICAL ARTICLES | 2021-07-01

Potentials for Process Monitoring in Bevel Gear Grinding

Since the macro geometry of bevel gears is directly dependent on the manufacturing process, there are limitations in the combination of pre-machining and hard finishing processes which are related to the geometry of the gaps.
INDUSTRY NEWS | 2021-06-24

Norton Offers New IDeal-Prime Internal Diameter Grinding Wheels

Saint-Gobain Abrasives recently introduced its new high performance Norton IDeal-Prime Internal Diameter Grinding Wheels for precision ap...
INDUSTRY NEWS | 2021-06-02

Krebs & Riedel Celebrate 125 Years of Grinding Technology

The cornerstone of the Krebs & Riedel grinding wheel factory in Bad Karlshafen was laid some 125 years ago. Today the family-owned co...
INDUSTRY NEWS | 2021-05-24

Norton Quantum Prime Grain Optimizes Grinding Wheel Performance

Saint-Gobain Abrasives has announced the introduction of Norton Quantum Prime Grinding Wheels featuring new, proprietary nano-crystalline...
INDUSTRY NEWS | 2021-05-17

Danobat Introduces New Cylindrical Grinding Machine

The new CG generation is the perfect combination of productivity, versatility and compact design. With its new core technology and the pr...
FEATURE ARTICLES | 2021-05-01

Making Room for Productivity and Quality Requirements in Gear Grinding

A look at how gear grinding comes with unique production challenges.
INDUSTRY NEWS | 2021-04-26

ANCA Provides Complete Skiving Cutter Solution for EV Transmissions

ANCA's TX and MX machines offer skiving cutter sharpening

INDUSTRY NEWS | 2021-04-21

BMW Motorrad Uses Junker JUCRANK for Different Grinding Operations

BMW Motorrad uses the JUCRANK non-cylindrical grinding machine for different grinding operations on boxer crankshafts. These are assemble...
INDUSTRY NEWS | 2021-04-15

PTG Holroyd and Siemens Collaborate on Gear Grinding Center

A new precision gear grinding center from PTG Holroyd hasn’t simply been designed to bring greater levels of efficiency and accurac...
INDUSTRY NEWS | 2021-03-23

Liebherr Expands Generating and Profile Grinding Technology

Liebherr recently introduced a new series of generating and profile grinding machines for hard machining of external and internal gears o...
INDUSTRY NEWS | 2020-11-17

Forest City Gear Expands Threaded Wheel Grinding Capabilities

Forest City Gear now can perform hard fine finishing of larger diameter cylindrical gears faster and more efficiently in higher volumes w...
INDUSTRY NEWS | 2020-10-27

Junker Offers Non-Cylindrical Grinding Machine for Process Reliability

BMW Motorrad uses the JUCRANK non-cylindrical grinding machine for different grinding operations on boxer crankshafts. These are assemble...
GEAR TALK WITH CHUCK | 2020-10-21

It All Depends ...

Regular followers of this blog know whenever I say “it all depends,” that I am compelled to credit industry legend Ray Drago for stealing his catch...
GEAR TALK WITH CHUCK | 2020-10-14

Closing the Gap

We left the gear tribe arguing over how to solve the problems that were cropping up with the new-fangled double helical or herringbone designs. Fas...
GEAR TALK WITH CHUCK | 2020-09-16

Learning the Ropes

Ever wonder about the origin of common phrases? As the son of a sailor, I have always enjoyed maritime history and nautical fiction, although some ...
GEAR TALK WITH CHUCK | 2020-08-01

IMTS Future Tech

The Digital Manufacturing Revolution Evolves in 2020 IMTS will offer two comprehensive digital programs, IMTS Network and IMTS Sp...

INDUSTRY NEWS | 2020-07-15

Norton Offers Grinding Solution for Ductile and Grey Cast Iron Applications

Norton Winter Ironclad Superabrasive Foundry Wheels offer a solution for ductile and grey cast iron applications such as fettling and sna...
INDUSTRY NEWS | 2020-07-13

PTG Holroyd Introduces New Gear Grinding Center

A brand-new gear grinding center from Holroyd Precision promises to bring even higher levels of intelligence and efficiency to the produc...
FEATURE ARTICLES | 2020-07-01

The Perfect Time for Power Skiving

Italian gear manufacturer Metalcastello’s investment in new Gleason Power Skiving technology gives the company a strong competitive edge as the world’s industries gear up for the post-pandemic.
GEAR TALK WITH CHUCK | 2020-06-24

Mid-Game Adjustments

People of a certain age well remember The A-Team, a television show about a team of ex-military guys who went around righting wrongs and b...
INDUSTRY NEWS | 2020-06-18

NUM Software Provides 'Off the Shelf' Solution for Non-Circular Grinding

NUM provides manufacturers of CNC cylindrical grinding machines with an elegant means of adding non-circular grinding capabilities to the...
INDUSTRY NEWS | 2020-06-17

Hoffmann Group Taps WFL Millturn to Test and Optimize Tools

Pushed to the Maximum

With over 4,000 employees and an extensive range of tools, operating equipment and personal protec...
INDUSTRY NEWS | 2020-05-07

J.Schneeberger Maschinen AG. Offers Modern Drive Technology for Several Grinding Operations with Corvus Series

The Corvus series machine is designed to offer, high horsepower 5-axis CNC tool grinder for pelletizers, slab mill cutters, and other app...
FEATURE ARTICLES | 2020-05-01

Inside Look at the Hard Finishing Cell

Gleason Combines Threaded Wheel Grinding with GRSL Gear Inspection
TECHNICAL ARTICLES | 2020-05-01

Prototyping on Bevel Gear Cutting and Grinding Machines

Why Prototyping with End-mills on Bevel Gear Machines? Manufacturing of spiral bevel and hypoid gears can be conducted in several ways.
INDUSTRY NEWS | 2020-03-18

United Grinding Partners with Dynamic Machine

United Grinding North America Inc. announced it has entered into a partnership with Dynamic Machine of Detroit, a Troy, Michigan-based CN...
GEAR TALK WITH CHUCK | 2020-02-26

After Further Review

Unless it is your team being robbed, you probably hate having a live broadcast interrupted by a video review. We sometimes feel this way during a d...
INDUSTRY NEWS | 2020-02-04

Forest City Gear Adds Finish Grinding Capacity

Forest City Gear has expanded its capacity for very high precision finish grinding of external, internal, straight and helical gears and ...
TECHNICAL ARTICLES | 2020-01-01

Grinding Wheel Wear, Dressing, Tip Advance and Work Phase Angle Adjustment after Corrections

Are there rules to aid in grinding process optimization?
INDUSTRY NEWS | 2019-11-22

Tyrolit Offers Grinding Technologies for Medical Applications

The trend of an ever-aging society has increasingly brought medical advancements and medical technology into the spotlight. At the same t...
INDUSTRY NEWS | 2019-11-20

Liebherr and Morat Swoboda Collaborate on E-Mobility Solutions

Few topics are currently so intensely discussed as climate and the question of future-viable mobility. Stress caused by car traffic, particularly a...
INDUSTRY NEWS | 2019-11-08

PTG Holroyd Offers Rotor Grinding Machine

The TG350E rotor grinding machine from UK-based Holroyd Precision is rapidly making a name for itself as the preferred choice among indus...
TECHNICAL ARTICLES | 2019-11-01

A Comparative Study of Polymer Gears Made of Five Materials

The wear behavior of polymer gears made of five different materials has been investigated using an existing polymer gear test rig. Step loading tests at a constant speed of 1,000 rpm were performed. Significant differences in failure modes and performance have been observed for the five polymer gear materials for gear engagements of gears, with the same material as each other.
GEAR TALK WITH CHUCK | 2019-10-30

What Do You Want to Know?

AGMA’s acquisition of the assets of Randall Publications LLC, the company responsible for both
GEAR TALK WITH CHUCK | 2019-10-24

Finding the Leading Edge

I had planned to attend the MPT Show in Detroit last week and participate in Gear Technology ‘s Ask the Expert panel, but...
INDUSTRY NEWS | 2019-08-16

Norton Will Highlight Xtrimium Grinding Wheels During Motion + Power Technology Expo

Norton Xtrimium gear grinding wheels will be highlighted at the Motion + Power Technology Show Booth #2607, October 15-17, 2019 at the Co...
GEAR TALK WITH CHUCK | 2019-07-26

Timely Course Corrections

Mrs. Curtis’ account of their family firm’s transition from general machining to noted gearbox manufacturer is an important reminder that success o...
GEAR TALK WITH CHUCK | 2019-07-25

Gear Origins: Reinventing the Family Business

Sometimes the old family recipe needs updating… My husband’...
PRODUCT NEWS | 2019-07-01

Product News

The complete Product News section from the July 2019 issue of Gear Technology.
GEAR TALK WITH CHUCK | 2019-06-13

Rockford: Should it be Renamed Gear City USA?

Rob Swiss’ origin story reached me the very same day his new hometown, Rockford, Illinois, ...
GEAR TALK WITH CHUCK | 2019-06-11

Rob Swiss — The Accidental Engineer

Another young man discovers you need not be an expert machinist to succeed as a gear engineer. Spoiler alert: never tangle with a grinding wheel; they are undefeated in all time.
FEATURE ARTICLES | 2019-06-01

Fine Grinding on Klingelnberg Bevel Gear Grinding Machines

One way to implement the growing performance requirements for transmissions is by optimizing the surface finish of the gearing. In addition to increasing the flank load capacity and the transmittable torque, this also allows for improvements in efficiency. On Oerlikon bevel gear grinding machines from Klingelnberg, fine grinding can be implemented efficiently in bevel gear production - even in an industrial serial process.
INDUSTRY NEWS | 2019-05-29

Helical and Spur Gear Producer Selects Holroyd Precision Gear Grinding Center

Developed for one-off or batch grinding of precision spur and helical gears, worms, screws and rotors of up to 350 mm diameter and 160 mm...
GEAR TALK WITH CHUCK | 2019-05-24

Finding the Limits

Jim Richard’s account of his journey from youthful experimenter to designer of cutting edge gear processing equipment illustrates the amazing thing...
INDUSTRY NEWS | 2019-05-13

United Grinding Expands Two-in-One Grinding Concept

Based on a highly efficient and productive two-in-one concept, Walter Helitronic Vision Diamond 400 L, Helitronic Power Diamond 400 and H...
INDUSTRY NEWS | 2019-04-30

Studer Offers Versatile Grinding Machine for Large Tasks

The new S31 performs complex and varied grinding tasks precisely and reliably. It can be used to produce small to medium-sized workpieces...
INDUSTRY NEWS | 2019-04-29

3M Introduces High Performance, Precision Structured Internal Grinding Wheels

Specifically designed abrasive tools require tight wheels, geometry, and tolerance for mass production. Companies that grind in the most ...
GEAR TALK WITH CHUCK | 2019-04-25

Applying the Fundamentals

Yefim Kotlyar’s origin story is a great lesson to anyone entering the o...
GEAR TALK WITH CHUCK | 2019-04-24

Yefim Kotlyar — My Story

Yefim Kotlyar is a wonderful example of how gears unite the world. His background is much different than mine, yet we share a deep appreciation...
INDUSTRY NEWS | 2019-04-23

Studer Offers S33 Universal Cylindrical Grinding Machine

Universal and flexible. These are the features of the new S33, the CNC universal cylindrical grinding machine from Studer. With distances...
GEAR TALK WITH CHUCK | 2019-04-16

Joe Arvin — My Story

Today’s origin story is by one of the true “good guys” in our trade. I first met Joe in 1989 when I was job hunting. He could tell I was in a b...
INDUSTRY NEWS | 2019-03-20

Holroyd Precision Grinding Machine Cuts Manufacturing Time at Mayekawa

Mayekawa Manufacturing Company, the global industrial refrigeration specialist headquartered in Japan, has purchased one of Holroyd Preci...
GEAR TALK WITH CHUCK | 2019-01-30

From Co-op to Vice President: Octave A. LaBath

I was attending the University of Cincinnati in the college of engineering. After my freshman year in 1960, I started my co-op job with the Cincinn...
GEAR TALK WITH CHUCK | 2019-01-22

Retail Management Career to Gear Manufacturing: Who Would Have Guessed?

In 2012, Rj Link International hired Matt Rossiter as a gear machinist and entered him into the Rock River Valley Tooling & Machining Associati...
INDUSTRY NEWS | 2019-01-08

EMAG Combines Vertical Turning Technology with Finish Grinding

When it comes to machining times, combining various machining processes in one setup offers enormous savings potential. With the combinat...
INDUSTRY NEWS | 2018-12-18

ANCA iView Measuring System Enables Faster and More Accurate Grinding

A survey by McKinsey showed that in manufacturing, approximately 749 billion hours are worked each year around the world. Of these, about...
GEAR TALK WITH CHUCK | 2018-12-04

Dealing with Obsolescence

Emerging technology gets lots of coverage in all forms of media; obsolete technology is still the backbone of our economy. Self-driving vehicles ex...
INDUSTRY NEWS | 2018-11-26

Marposs Offers Grinding Gauge for Immediate Machine Compensation

Marposs Corp. has announced the availability of its new P3dME electronic gauge amplifier for post-process monitoring of smooth and groo...
INDUSTRY NEWS | 2018-11-15

Beautiful on the Inside

Higher Quality Internal Gears

GEAR TALK WITH CHUCK | 2018-11-13

What Do You Really Need to Know?

I am pretty certain I told this story before, but it is worth repeating in the context of preserving corporate memory. When AGMA first offered ISO ...
FEATURE ARTICLES | 2018-11-01

Spin City

Grinding Wheel Technology Focuses on Speed, Efficiency and Time Savings
FEATURE ARTICLES | 2018-11-01

Why Select Gear Grinding with cBN

Cubic Boron Nitride (cBN) abrasive wheels, which are a specially engineered abrasive grain referred to as a superabrasive, typically yield 2,200 - 2,500 parts per dress with one wheel lasting as long as four to six months.
TECHNICAL ARTICLES | 2018-11-01

The Influence of a Grinding Notch on the Gear Bending Strength Rating

To achieve the requested quality, most gears today are ground. The usual grinding process includes treating the gear flank but disengaging before reaching the root rounding area. If the gear is premanufactured with a tool without protuberance, then at the position where the grinding tool retracts from the flank a grinding notch in the tooth root area is produced. Such a notch may increase the bending stresses in the root area, thus reducing the strength rating.
INDUSTRY NEWS | 2018-10-19

Liebherr Introduces New Gear Grinding Machine

Based on its LGG 280 generating grinding machine, Liebherr recently presented the larger LGG 400 M model at IMTS in Chicago. The new L...
INDUSTRY NEWS | 2018-09-21

Norton | Saint-Gobain Increases Grinding Productivity with Winter Vitrified CBN Wheels

Saint-Gobain Abrasives has announced the introduction of its new Norton Winter Vitron7 cBN Grinding Wheels. The wheels feature a high-p...
GEAR TALK WITH CHUCK | 2018-09-19

Adjust Tolerances or Expectations?

There is a great deal of science involved in measuring things, but considerably less on what the baseline dimensions and clearances should be. This...
INDUSTRY NEWS | 2018-09-18

Grinding Machines Increase Quality and Productivity at Nixon Gear

Two new grinding machines were recently added to production at Gear Motions’ Nixon Gear Division in Syracuse, NY.The Studer S121 is...
GEAR TALK WITH CHUCK | 2018-09-14

The Usual Suspects

Once you accept that “stuff” happens in even the best of machine shops, you can begin to assess where the problems are likely to occur and start th...
INDUSTRY NEWS | 2018-09-05

Hainbuch Taps Hänel for Mandrel Prototype Test

Hard work and first-class teamwork between the gear factory Hänel and Hainbuch has paid off. The new mandrel Mando G211 for gear manufacturers, sui...
INDUSTRY NEWS | 2018-08-15

IMTS 2018: A Field Guide

Chicago Preps for the Next Manufacturing Technology Extravaganza Matthew Jaster, Senior Editor
INDUSTRY NEWS | 2018-08-13

International Gear Conference 2018

Lyon, France. Mechanical transmission components such as gears, rolling element bearings, CVTs, belts, chains, etc. are present in every industrial...
TECHNICAL ARTICLES | 2018-08-01

Influences of the Residual Stress Condition on the Load-Carrying Capacity of Case-Hardened Gears

Highly loaded gears are usually casehardened to fulfill the high demands on the load-carrying capacity. Several factors, such as material, heat treatment, or macro and micro geometry, can influence the load-carrying capacity. Furthermore, the residual stress condition also significantly influences load-carrying capacity. The residual stress state results from heat treatment and can be further modified by manufacturing processes post heat treatment, e.g. grinding or shot peening.
INDUSTRY NEWS | 2018-07-20

Bourn & Koch Promotes Joe Goral to Business Unit Manager for Grinding Machine Tools

Bourn & Koch, Inc. is pleased to announce that Joe Goral Sr. has accepted a new position within the company as business unit manage...
GEAR TALK WITH CHUCK | 2018-06-28

Suns and Planets

The first planetary drive I helped take apart had three stages of through hardened spur gears encased in a simple cast iron tube with plates on both ends. Both input and output shafts rotated on taper roller bearings, but everything else had simple bronze bushings.
INDUSTRY NEWS | 2018-06-26

Zoller Highlights Smart Factory Solutions

Zoller Inc. has a new digital playground in Ann Arbor, Michigan. The tooling, inspection and tool management company now has 44,000+ sq. ft. of spa...
INDUSTRY NEWS | 2018-06-04

Junker Group Extends Grinding Machine Range with Corundum Line

The Junker Group has extended its range of grinding machines: With its new Zema corundum line, the company is offering efficient solution...
FEATURE ARTICLES | 2018-06-01

Cutting Down on Setup Time

With increasingly smaller returns from improving the speed of the actual gear grinding process, improving your setup time has become a primary way to keep improving efficiency. Here's the latest on how you can do that today.
TECHNICAL ARTICLES | 2018-06-01

Human Machine Interface (HMI) in Gear Manufacturing

"Documentation is not a Substitute for an Intuitive Interface." The author explores the development of modern controls for a CNC gear grinding machine.
TECHNICAL ARTICLES | 2018-06-01

Standard Samples for Grinder Burn Etch Testing

A different method to produce a sample that has a very consistent amount of thermal damage.
GEAR TALK WITH CHUCK | 2018-05-22

Further Modifications

You might be thinking this conversation would logically move to other tooth modifications. Gear Technology has and will c...
INDUSTRY NEWS | 2018-04-30

EMAG Gets Smart with Mobile Analytics

Machine data has never been easier to collect, distribute and analyze. Monitoring production lines, evaluating tools and surveying tool conditions ...
GEAR TALK WITH CHUCK | 2018-04-25

The Long and Short of It

One of the problems with “tribal knowledge” is that the terminology can confuse those who are not fully immersed in that community. I have lost ...

GEAR TALK WITH CHUCK | 2018-04-17

How Many Teeth Do You Want?

Designing gears is somewhat of a mathematical puzzle. You have lots of interconnected factors to play with in hopes of finding the “best” overall s...
GEAR TALK WITH CHUCK | 2018-03-20

Minimal Worm Expertise

Worm gearing has long been a big part of the mechanical world. If you work in the gear trade, “civilians” will rightly expect you to know things ab...
INDUSTRY NEWS | 2018-02-12

IIoT Spotlight: The Job Shop

As IIoT solutions become more readily available throughout the manufacturing sector, challenges continue when you start looking specifically at the...
GEAR TALK WITH CHUCK | 2017-12-27

Trying to Reason with the Holiday Season

I am a big fan of randomness; to me living in a place where the weather was the same everyday would be a real trial. Given the need some of our spe...
INDUSTRY NEWS | 2017-12-20

Vomat Filtration Systems Provide 100 Percent Separation of Clean and Dirty Grinding Oil

To manufacture precision tools, tool manufacturers must optimally coordinate all parameters involved in the process such as edge preparat...
INDUSTRY NEWS | 2017-12-13

Forest City Gear Expands Small Diameter ID/OD Grinding Capability

Forest City Gear has expanded its capabilities for the hard finishing of smaller diameter gears with particularly tight ID and length tol...
INDUSTRY NEWS | 2017-11-08

Gleason 410SCG Shaving Cutter Grinding Machine Speeds Up Shaving Cutter Re-Sharpening

Gleason is meeting the global need for fast, high quality re-sharpening of shaving cutters up to 400 mm in diameter and Module 14 with th...
INDUSTRY NEWS | 2017-10-25

Gear Expo Day 1

INDUSTRY NEWS | 2017-09-20

DVS Technology Group Presenting Gear Grinding Solutions at EMO

The EMO fair booth of DVS Technology Group in Hall 17, Booth C46 will be focusing on the high-precision machining of components for power...
GEAR TALK WITH CHUCK | 2017-09-14

Developing Resilience

For many years, “robust” was a popular business buzz word. The idea was to make certain your procedures and processes were “strong” enough to withs...
GEAR TALK WITH CHUCK | 2017-08-31

Cost Reduction Ideas

A commentator recently asked for “real world” examples of how he could reduce costs and win more orders. Improved technology is often cited as the ...
GEAR TALK WITH CHUCK | 2017-08-24

Effective Instructions

Have you ever tried to assemble something with poorly written or translated instructions? The classic image of a befuddled father on Christmas Eve ...
INDUSTRY NEWS | 2017-08-17

Meister Abrasives HPL Grinding Wheels Naturally Release Lubricant as they Grind

Meister Abrasives new HPL (High Performance Lubrication) Grinding Wheels rely on premium grade CBN crystals fixed with durable, porous, i...
INDUSTRY NEWS | 2017-08-03

Haas Multigrind CA and CB Machines Utilize High-Capacity Grinding Wheel Shelf Magazines

All Haas Multigrind grinding centers are available with an automatic wheel changer.  This feature enables Haas customers to combine ...
FEATURE ARTICLES | 2017-08-01

Speed Matters - In Racing and in Hobbing

RCD Engineering's switch from manual to CNC hobbing operations breaks gear manufacturing lead time records with Bourn & Koch 100H in their gear production pit crew.
TECHNICAL ARTICLES | 2017-08-01

Efficient Hard Finishing of Asymmetric Tooth Profiles and Topological Modifications by Generating Grinding

In order to improve load-carrying capacity and noise behavior, gears usually have profile and lead modifications. Furthermore, in gears where a specified tooth-flank load application direction (for drive and coast flanks) is a design enhancement, or even compulsory, the asymmetric tooth profile is a further solution. Nowadays, many gears need to be hard finished. Continuous generating grinding offers a very high process efficiency, but is this process able to grind all modifications, especially asymmetric gears? Yes, it is!
TECHNICAL ARTICLES | 2017-07-01

MicroPulse and MicroShift for Ground Bevel Gearsets

Grinding of bevel and hypoid gears creates on the surface a roughness structure with lines that are parallel to the root. Imperfections of those lines often repeat on preceding teeth, leading to a magnification of the amplitudes above the tooth mesh frequency and their higher harmonics. This phenomenon is known in grinding and has led in many cylindrical gear applications to an additional finishing operation (honing). Until now, in bevel and hypoid gear grinding, a short time lapping of pinion and gear after the grinding operation, is the only possibility to change the surface structure from the strongly root line oriented roughness lines to a diffuse structure.
FEATURE ARTICLES | 2017-06-01

Gear Grinding Today

New divisions, open houses and the continued rise of the Industrial Internet of Things - There's been a lot going on in gear grinding in the past year.
ASK THE EXPERT | 2017-06-01

Ground and Hobbed Globoidal Worm Sets

A reader wants to know: Are profile ground and hobbed globoidal worm sets better than multi-axis CNC generated globoidal worm gear sets for reduction of noise and vibration?
TECHNICAL ARTICLES | 2017-06-01

Twist Control Grinding

This paper introduces the latest process developments for the hard-finishing of gears, specifically in regard to controlling the so-called flank twist.
TECHNICAL ARTICLES | 2017-06-01

Surface Structure Shift for Ground Bevel Gears

Ground bevel and hypoid gears have a designed motion error that defines parts of their NVH behavior. The surface structure is defined by the hard finishing process.
INDUSTRY NEWS | 2017-05-31

Junker JUMAT Machine Offers Simultaneous Grinding of ID, OD and Faces of Gears

Junker has introduced the JUMAT 6S 18-20S-18, the latest of Junker's JUMAT series of modular grinding machines, which is capable of g...
GEAR TALK WITH CHUCK | 2017-05-30

Leadership or Management?

My last post mentioned the big changes in the gear industry during my 47 year tenure, and the importance of visionary leadership. I have come to un...
GEAR TALK WITH CHUCK | 2017-05-19

Exploring New Methods

I have been following developments on gear making in general-purpose CNC machines with great interest. The advent of affordable gear grinding seems...
INDUSTRY NEWS | 2017-05-18

ANCA Motion LinX Linear Motor Technology Now Equipped on Grinding Machines for Improved Chip Evacuation

Highly polished flutes and gash surfaces improve chip evacuation and aid tool performance. The smoother surface enables swarf (or chips) ...
GEAR TALK WITH CHUCK | 2017-04-13

Fundamentals of Maintenance

Modern cars and trucks are wonderfully reliable and durable. As much as I love old cars I cannot cleanse my memory of the heartbreaking behavior th...
INDUSTRY NEWS | 2017-03-31

EMAG VLC 100 GT Combines Vertical Turning and Finish Grinding in One Package

When it comes to machining times, combining various machining processes in one setup offers enormous savings potential. With the combinat...
GEAR TALK WITH CHUCK | 2017-03-30

Open Source Part II

One of the things I mention when teaching about gears is the long history of great minds who have contributed to our field. Early readers of Ge...
GEAR TALK WITH CHUCK | 2017-03-14

Shared Knowledge

If you think you know something, try teaching it. Putting aside the average engineer’s aversion to public speaking, the prospect of organizing your...
INDUSTRY NEWS | 2017-02-03

Chevalier Grinder Features Rough and Fine-Grinding Cycles

The FSG-1224ADIII is fully automatic on the X- and Y-axis, includes 2-axis servo control and a new PLC controller that features a grind c...
GEAR TALK WITH CHUCK | 2017-01-19

Gears That Time Forgot

My consulting practice covers a very wide range of products — from 4-inch circular pitch mill stands to 180-NDP handheld medical devices — I see th...
GEAR TALK WITH CHUCK | 2017-01-17

In Praise of Old-School Technology

A wise man once pointed out that everyone drives a used car. We hear many reports on self-driving cars, electric cars, hybrid cars, and other plane...
FEATURE ARTICLES | 2017-01-01

Slow and Steady

The results of our Annual State of the Gear Industry Survey (See page 26) provided insight on 2016 as well as forecasts for 2017. Here is additional insight from some of the industry's leaders.
INDUSTRY NEWS | 2016-12-07

Röhm KZF-S External Clamping Collet Chucks Designed for Gear Surface Face Grinding

Röhm Products of America now offers a powered external clamping chuck for gear surface face grinding. The KZF-S collet chuck is espe...
TECHNICAL ARTICLES | 2016-11-01

The Role of Natural Frequencies in Grinding Systems Vibration

Excessive machine tool vibration during a precision grinding operation can result in poor workpiece quality in the form of chatter, rough finishes, burn, etc. One possible reason for excessive vibration is directly associated with the relationship between natural frequencies of a machine tool system and the operating speed of the grinding wheel spindle.
TECHNICAL ARTICLES | 2016-11-01

Influence of Topography Deviations on the Psychoacoustic Evaluation of Ground Bevel Gears

In the design process of transmissions, one major criterion is the resulting noise emission of the powertrain due to gear excitation. Within the past years, much investigation has shown that the noise emission can be attributed to quasi-static transmission error. Therefore, the transmission error can be used for a tooth contact analysis in the design process, as well as a characteristic value for quality assurance by experimental inspections.
FEATURE ARTICLES | 2016-08-01

Updating Modern Production Processes

Gear Technology interviews Scott Yoders of Liebherr about the latest gear machining technologies of relevance to automotive manufacturers.
TECHNICAL ARTICLES | 2016-06-01

Worm Gear Efficiency Estimation and Optimization

This paper outlines the comparison of efficiencies for worm gearboxes with a center distance ranging from 28 - 150 mm that have single reduction from 5 to 100:1. Efficiencies are calculated using several standards (AGMA, ISO, DIN, BS) or by methods defined in other bibliographic references. It also deals with the measurement of torque and temperature on a test rig — required for the calibration of an analytical model to predict worm gearbox efficiency and temperature. And finally, there are examples of experimental activity (wear and friction measurements on a blockon- ring tribometer and the measurements of dynamic viscosity) regarding the effort of improving the efficiency for worm gear drivers by adding nanoparticles of fullerene shape to standard PEG lubricant
TECHNICAL ARTICLES | 2016-06-01

Bevel Gear Cutting Methods

THE FINAL CHAPTER This is the last in the series of chapters excerpted from Dr. Hermann J. Stadtfeld's Gleason Bevel Gear Technology - a book written for specialists in planning, engineering, gear design and manufacturing. The work also addresses the technical information needs of researchers, scientists and students who deal with the theory and practice of bevel gears and other angular gear systems. While all of the above groups are of course of invaluable importance to the gear industry, it is surely the students who hold the key to its future. And with that knowledge it is reassuring to hear from Dr. Stadtfeld of the enthusiastic response he has received from younger readers of these chapter installments.
FEATURE ARTICLES | 2016-06-01

The Comprehensive Gear Grind

Looking for some simple yet useful advice heading into IMTS 2016? Never second guess your machine tool investment. Flexibility is a mandatory requirement in gear manufacturing today. Accuracy, reliability and efficiency must improve with each new machine tool purchase. Innovation is always the end game. So it comes as no surprise that IMTS 2016 attendees will have plenty of gear grinding technologies to consider this fall.
FEATURE ARTICLES | 2016-06-01

Innovations for High Productivity Generating Grinding

In comparison to the visionary Industry 4.0 - or the Fourth Industrial Revolution - the machine tool industry can appear rather down-to-earth.
GEAR TALK WITH CHUCK | 2016-05-19

Barter Time?

Another week — another interesting conversation with a concerned company president. Bookings are down and he has been thinking of ways to broade...
INDUSTRY NEWS | 2016-05-11

Elliot Tool Technology Carbide-Roll Burnishing Tools Designed to Eliminate Grinding, Honing and Polishing Processes

Carbide-Roll Burnishing Tools by Elliott Tool Technology, which produce a mirror-like surface finish while eliminating secondary operatio...
INDUSTRY NEWS | 2016-03-29

Saint-Gobain Norton Quantum3 Depressed Center Grinding Wheels Designed to Decrease Downtime, Improve User Comfort

Saint-Gobain Abrasives has introduced Norton Quantum3 (NQ3) Depressed Center Grinding Wheels. Featuring a proprietary grain along with a ...
FEATURE ARTICLES | 2016-03-01

Plastic Gearing Continues Converting the Unconverted

Plastic gears are everywhere today - throughout your car, at the oceans' lowest depths, in deep space. The question, when is a metal gear a candidate for plastic conversion, can be addressed in three words, i.e. what's the application?
ASK THE EXPERT | 2016-03-01

Hard-Finishing Spiral Bevel Gears

Could you explain to me the difference between spiral bevel gear process face hobbing-lapping, face milling-grinding and Klingelnberg HPG? Which one is better for noise, load capacity and quality?
GEAR TALK WITH CHUCK | 2016-02-23

Reviving Old Ideas

My last blog may have sounded like I didn’t think there was anything really new to be found in the gear trade. Actually I think there are numerous ...
GEAR TALK WITH CHUCK | 2016-01-28

Room for Improvement

Previous blogs here have celebrated the great advances made in gear industry design capabilities and machine tools. As the “paper of record” for th...
GEAR TALK WITH CHUCK | 2016-01-14

Better Tools, Better Gears?

  Previous blogs have discussed how fortunate we are to live in an age with the very best in gear making technology. Modern gear grinding m...
INDUSTRY NEWS | 2015-12-24

Samputensili SG 160 Sky Grind Introduces Dry Grinding of Gears to Star SU Line

Samputensili has recently launched a world premiere at EMO Milan 2015. The new machine, the SG 160 Sky Grind, is designed to eliminate th...
GEAR TALK WITH CHUCK | 2015-12-10

Doing Nothing is Not Without Risk

One last thought before we leave the subject of evaluating incoming quotes — doing nothing is risky. The gear business may seem like a stable, well...
INDUSTRY NEWS | 2015-11-16

Hewland Installs Klingelnberg Oerlikon G60 Spiral Bevel Gear Grinding Machine

Hewland Engineering recently announce the installation of a Klingelnberg Oerlikon G60 spiral bevel gear grinding machine. Utilizing Kling...
GEAR TALK WITH CHUCK | 2015-09-22

How Reliable is Our Information?

How much can we trust our understanding of how things work? There was a special joint web ex meeting this week between two AGMA committees that got...
GEAR TALK WITH CHUCK | 2015-09-10

A Century of Gears

The American Gear Manufacturers’ Association [AGMA] will celebrate its 100th Anniversary in 2016. The party will begin with the Fall Tec...
INDUSTRY NEWS | 2015-09-09

Klingelnberg to Showcase Oerlikon G 30 Bevel Gear Grinding Machine at Gear Expo

Klingelnberg will be exhibiting its capabilities with a presentation of cutting-edge technology “made in Germany” in the form...
TECHNICAL ARTICLES | 2015-09-01

Local Simulation of the Specific Material Removal Rate for Generating Gear Grinding

Generating gear grinding is one of the most important finishing processes for small and medium-sized gears, its process design often determined by practical knowledge. Therefore a manufacturing simulation with the capability to calculate key values for the process — such as the specific material removal rate — is developed here. Indeed, this paper presents first results of a model for a local analysis of the value. Additionally, an empirical formula — based on a multiple regression model for a global value describing the process — is provided.
PRODUCT NEWS | 2015-09-01

Product News

News about New Products
GEAR TALK WITH CHUCK | 2015-08-11

Butterfly Effect

I’ve been traveling quite a bit lately, and wonder if perhaps we take the convenience of air travel for granted. Who would have expected an hour to...
INDUSTRY NEWS | 2015-08-05

Gleason Genesis 200GX Threaded Wheel Grinding Machine to be Introduced at Gear Expo

Gleason recently announced it will introduce advanced machines, tooling, and global customer support services covering a wide array of pr...
TECHNICAL ARTICLES | 2015-08-01

Tooth Flank Fracture - Basic Principles and Calculation Model for a Sub-Surface-Initiated Fatigue Failure Mode of Case-Hardened Gears

Cracks initiated at the surface of case-hardened gears may lead to typical life-limiting fatigue failure modes such as pitting and tooth root breakage. Furthermore, the contact load on the flank surface induces stresses in greater material depth that may lead to crack initiation below the surface if the local material strength is exceeded. Over time the sub-surface crack propagation may lead to gear failure referred to as “tooth flank fracture” (also referred to as “tooth flank breakage”). This paper explains the mechanism of this subsurface fatigue failure mode and its decisive influence factors, and presents an overview of a newly developed calculation model.
INDUSTRY NEWS | 2015-07-30

Junker and Zema to Exhibit Gear Grinding Machines Together at EMO Milano

At EMO Milano 2015, Junker Group and Zema will be exhibiting together for the first time in Europe: Zema will be demonstrating a cylindri...
GEAR TALK WITH CHUCK | 2015-07-21

A Long Hot Summer

We are having a bit of a heat wave in the Chicago area, not the deadly type of 1996, but uncomfortable for much outside activity. I marvel at the t...
INDUSTRY NEWS | 2015-06-26

True Gear & Spline Increases Grinding Capacity With New Niles ZP 12

True Gear& Spline Ltd. recently added CNC gear profile grinding to their machining capabilities with their newly installed Niles ZP 1...
INDUSTRY NEWS | 2015-06-24

Junker Builds New Platform for Cylindrical and Non-Cylindrical Grinding of Workpieces

Junker recently built a new platform for cylindrical and non-cylindrical grinding of workpieces with a swing diameter of 470 mm and a par...
INDUSTRY NEWS | 2015-06-10

Junker Delivers 500th Grinding Machine to Volkswagen Group

Grinding machine manufacturer Junker recently celebrated a milestone as the Volkswagen Group recently purchased their 500th Junker grindi...
FEATURE ARTICLES | 2015-06-01

Bevel Grinding Rolling Right Along

When Dr. Hermann J. Stadtfeld speaks, people tend to listen. Considered one of the world’s foremost experts on bevel gears, Stadtfeld, the vice president of bevel gear technology at Gleason, recently revealed several cutting-edge advancements that the company has been working on.
FEATURE ARTICLES | 2015-06-01

Gear Grinding is Getting Easier, Better, Faster, Stronger

Liebherr is well-known as one of the world’s largest privately owned companies — a titan in heavy industry specializing in cranes, trucks and mammoth earth moving and mining equipment.
INDUSTRY NEWS | 2015-06-01

Industry News

News from Around the Gear Industry
GEAR TALK WITH CHUCK | 2015-05-26

Short Lived Gearbox Designs

“All memorable quotations referring to gearboxes involve expletives.” Peter Wright             The author of Fo...

INDUSTRY NEWS | 2015-05-13

Hewland Engineering Expands Grinding Capabilities

Hewland Engineering recently announced a multi-million pound investment in state-of-the-art spiral bevel grinding capability, due to arri...
GEAR TALK WITH CHUCK | 2015-04-02

Evolving Equipment

[starbox]How long should gear manufacturing equipment last? I posted before about some very “veteran” gear cutting machines that are still earning ...
INDUSTRY NEWS | 2015-03-19

Junker Acquires Majority Share in Brazilian Grinding Machine Manufacturer

The Junker Group recently added Brazilian grinding machine manufacturer ZEMA to its corporate group. ZEMA was founded back in 1953, has m...
ASK THE EXPERT | 2015-03-01

Measuring Residual Stress in Gears

I have heard that X-ray diffraction does not tell the whole story and that I should really run a fatigue test. I understand this may be the best way, but is there another method that gives a high degree of confidence in the residual stress measurement?
TECHNICAL ARTICLES | 2015-03-01

Prediction of Surface Zone Changes in Generating Gear Grinding

One process for hard finishing gears is generating gear grinding. Due to its high process efficiency, generating gear grinding has replaced other grinding processes such as profile grinding in batch production of small- and middle-sized gears. Yet despite the wide industrial application of generating gear grinding, the process design is based on experience along with time- and cost-intensive trials. The science-based analysis of generating gear grinding demands a high amount of time and effort, and only a few published scientific analyses exist. In this report a thermo-mechanical process model that describes influences on the surface zone in generating gear grinding is introduced.
EVENTS | 2015-03-01

Calendar

The complete technical calendar from the March/April 2015 issue of Gear Technology.
FEATURE ARTICLES | 2015-01-01

Getting in Gear with the Chain of Innovations

At the dawn of the Industrial Revolution, so-called mechanics were tasked with devising the precise methods that would make mass production possible. The result was the first generation of machine tools, which in turn required improved tooling and production methods.
GEAR TALK WITH CHUCK | 2014-11-13

A Good Waste of Time

GEAR TALK WITH CHUCK | 2014-11-07

The Importance of Perseverance

GEAR TALK WITH CHUCK | 2014-10-30

Moving the Goal Posts

[starbox]
GEAR TALK WITH CHUCK | 2014-10-09

Bad Career Moves

My e-mail correspondent was worried about making a bad career move. Since it is unlikely that people starting out in the gear trade today will work...
GEAR TALK WITH CHUCK | 2014-09-12

A Day We Can Never Forget

[starbox] Yesterday marked a day 13 years ago on which the world changed for all of us. Time forever more to be marked as “before” those terribl...
GEAR TALK WITH CHUCK | 2014-09-09

Have You Been to the Circus Yet?

[starbox] As mentioned before in this space, the bi-annual International Machine Tool Show (IMTS) is back in Chicago (September 8 – 3th). I’ll b...
TECHNICAL ARTICLES | 2014-09-01

Simulation of Deviations in Hobbing and Generation Grinding

The hobbing and generation grinding production processes are complex due to tool geometry and kinematics. Expert knowledge and extensive testing are required for a clear attribution of cause to work piece deviations. A newly developed software tool now makes it possible to simulate the cutting procedure of the tool and superimpose systematic deviations on it. The performance of the simulation software is illustrated here with practical examples. The new simulation tool allows the user to accurately predict the effect of errors. With this knowledge, the user can design and operate optimal, robust gearing processes.
GEAR TALK WITH CHUCK | 2014-08-19

The Challenge of Maintaining Excellence

[starbox] I blogged earlier about best-selling business books trumpeting rapid growth schemes rather than sustainable performance. Building a succ...
GEAR TALK WITH CHUCK | 2014-08-14

The Problem of Certainty

[starbox] In writing about unforeseen consequences there is a risk of inspiring such conservatism in design that the resulting product is no lon...
GEAR TALK WITH CHUCK | 2014-08-05

Make No Small Plans

[starbox] “Make no small plans” has been attributed to a variety of people over the years, but that doesn’t undermine its importance to fledglin...
FEATURE ARTICLES | 2014-08-01

Honing of Gears

The honing of gears - by definition - facilitates ease of operation, low noise and smoother performance in a transmission. Honing also contributes to reduced friction in the powertrain. Both the intense cutting (roughing process) as well as the functionally fine- finishing of transmission gears can be performed in one setup, on one machine.
ASK THE EXPERT | 2014-08-01

Importance of Contact Pattern in Assembly of Bevel vs Cylindrical Gears

Why is there so much emphasis on the tooth contact pattern for bevel gears in the assembled condition and not so for cylindrical gears, etc?
ASK THE EXPERT | 2014-08-01

The Pros and Cons of Fully Ground Root Fillets

For maximum life in carburized and ground gearing, I have been advised that fully grinding a radius into the root gives maximum resistance against fatigue failures. Others have advised that a hobbed and unground radius root form is best. Which is best, and why?
GEAR TALK WITH CHUCK | 2014-07-24

Leadership 101 — Commitment

[starbox] Much of what I believe about leadership I learned from the scouting program. I was a scout as a boy and when my children reached that ...
GEAR TALK WITH CHUCK | 2014-07-10

If You Are Going to Make Buggy Whips…

[starbox] If you are going to make buggy whips, they better be good ones. That is the lesson I took away from reading about hundred-year-old Wis...
FEATURE ARTICLES | 2014-07-01

No Compromising on Quality at Allison Transmission

Gleason 350GMS helps put higher quality, more reliable gears into its next-generation TC10 automatic transmission.
INDUSTRY NEWS | 2014-07-01

Industry News

The complete Industry News section from the July 2014 issue of Gear Technology.
GEAR TALK WITH CHUCK | 2014-07-01

You Don’t Know What You Don’t Know

[starbox] If ever a situation cried out for a short, texting-friendly acronym it is the unavoidable problem of “You don’t know what you don’t kn...
INDUSTRY NEWS | 2014-06-24

Industry Gathers for United Grinding Symposium

The world's largest event in the grinding machine industry drew to a close in Thun (Switzerland) with an enthusiastic audience. Every...
GEAR TALK WITH CHUCK | 2014-06-12

The Error of Hiding Failures

[starbox] The General Motors ignition switch fiasco remains in the headlines, having cost many lives, millions of dollars, and a number a career...
INDUSTRY NEWS | 2014-06-11

DiaGrind 535-5 Offers Advantages in Gear Honing and Grinding

The multifunctional metalworking fluid DiaGrind 535-5 has many enthusiastic users all over the world. They range from small shops to mult...
INDUSTRY NEWS | 2014-05-23

Vomat Offers Temp Stability During Grinding

In order to produce high-performance cutting tools, tool manufacturers go to great lengths to get all manufacturing parameters right. Production conditions have tremendous influence on the final quality of the tool...
GEAR TALK WITH CHUCK | 2014-05-22

Failing Boldly

[starbox] Aside from the pure mechanical beauty of it, my favorite thing about the Indy 500 is the tradition. What’s more, few events can match ...
GEAR TALK WITH CHUCK | 2014-05-20

Ideas Ahead of Their Time

[starbox] The magazine is celebrating its 30th anniversary this year and many special features will be published about technological breakthroug...
GEAR TALK WITH CHUCK | 2014-05-15

The Journey or the Destination?

I belong to a number of online technical forums besides contributing to the occasional “Ask the Expert” column here at Gear Technology.
GEAR TALK WITH CHUCK | 2014-05-06

The Peer Review Process

[starbox] I began this blog with an appeal for abstracts for the 2014 AGMA Fall Technical Meeting. For those of you who had an abstract accepted...
ADDENDUM | 2014-05-01

In Aviation, Pants Are Optional

The long and colorful history of aviation is comprised of many chapters and giants. The chapter we're reviewing in this installment of Addendum is the invention and development of the retractable landing gear.
GEAR TALK WITH CHUCK | 2014-04-22

Different Consequences

[starbox] In the most recent issue of Gear Technology, the Publisher’s Page recounts the inaugural issue’s coverage of “transformative ...
INDUSTRY NEWS | 2014-04-15

EMAG Introduces Small Grinding Center

Demand for components such as gearwheels, planetary gears, chain gears or flanged components for cars typically runs in quantities of millions...
INDUSTRY NEWS | 2014-03-27

United Grinding Announces New President

United Grinding North America, Inc. recently announced that current president and CEO, Rodger Pinney, has been elected as vice chairman...
INDUSTRY NEWS | 2014-03-05

United Grinding Invites Customers to Grinding Symposium

The United Grinding Group – Körber Schleifring up until EMO 2013 – has clearly understood the signs of the times in the ...
GEAR TALK WITH CHUCK | 2014-03-03

Time Flies When You Are Making Gears

[starbox] On Saturday I began my 44th year in the gear industry. I remember way too many details of my first day as a drafting apprentice at the...
PUBLISHER'S PAGE | 2014-03-01

The Next Transformation

Every so often manufacturing is jolted out of its inertia by a transformative technology – one that fundamentally changes not only the way products are made, but also the economics of the business.
FEATURE ARTICLES | 2014-03-01

Brad Foote and 3M Collaborate on Testing of Ground Parts

Cubitron II wheels are put to the test in this case study.
FEATURE ARTICLES | 2014-03-01

In Search of a Competitive Advantage

The grinding/abrasives market is rapidly changing, thanks to new technology, more flexibility and an attempt to lower customer costs. Productivity is at an all-time high in this market, and it’s only going to improve with further R&D. By the time IMTS 2014 rolls around this September, the gear market will have lots of new toys and gadgets to offer potential customers. If you haven’t upgraded any grinding/abrasives equipment in the last five years, now might be a good time to consider the investment.
TECHNICAL ARTICLES | 2014-03-01

Technological Potential and Performance of Gears Ground by Dressable CBN Tools

Dressable vitrified bond CBN grinding tools combine the advantages of other common tool systems in generating gear grinding. Yet despite those technological advantages, there is only a small market distribution of these grinding tools due to high tool costs. Furthermore, scant literature exists regarding generating gear grinding with dressable CBN. This is especially true regarding the influence of the grinding tool system on manufacturing-related component properties. The research objective of this report is to determine the advantages of dressable CBN tools in generating gear grinding.
INDUSTRY NEWS | 2014-02-12

PTG to Showcase Grinding in Germany

PTG Deutschland GmbH, the German-based division of Britain’s Precision Technologies Group, has chosen GrindTec 2014 to showcase its...
INDUSTRY NEWS | 2014-02-03

Burka-Kosmos Offers Latest Grinding Wheel

The Mira Ice product line of gear grinding wheels was developed in order to meet the requirements of profile grinding larger gears. A new...
INDUSTRY NEWS | 2014-01-27

United Grinding to Display Innovations at GrindTec 2014

United Grinding, the largest single-source provider of complete and integrated grinding solutions, will showcase its latest grinding, ero...
INDUSTRY NEWS | 2014-01-24

Oelheld Develops HSS Grinding Oil

SintoGrind HSS was especially developed for profile and flute grinding of steel alloys and in particular for High-Speed-Steel and medical...
GEAR TALK WITH CHUCK | 2014-01-17

Gear Training Then and Now

[starbox] Blogging about gear training brings to mind the widely attended Illinois Tool Works Gear School that Bob Moderow operated on behalf of h...
FEATURE ARTICLES | 2014-01-01

Super-Sized Quality Control

It's not easy being big. Maybe that's not exactly how the phrase goes, but it's applicable, particularly when discussing the quality requirements of large gears. The size alone promises unique engineering challenges. BONUS Online Exclusive: Big or Small - Inspection is Key to Success.
TECHNICAL ARTICLES | 2014-01-01

The XL Gears Project

Much of the existing guidelines for making large, high-performance gears for wind turbine gearboxes exhibit a need for improvement. Consider: the large grinding stock used to compensate for heat treatment distortion can significantly reduce manufacturing productivity; and, materials and manufacturing processes are two other promising avenues to improvement. The work presented here investigates quenchable alloy steels that, combined with specifically developed Case-hardening and heat treatment processes, exhibits reduced distortion and, in turn, requires a smaller grinding stock.
INDUSTRY NEWS | 2013-11-22

C&B Machinery Offers Clamp Bore Disc Grinding Machine

C & B Machinery has received multiple orders for its latest generation Model CBV-3 Clamp Bore disc grinding machine. The automotive i...
INDUSTRY NEWS | 2013-11-12

Körber Schleifring Becomes United Grinding

Körber Schleifring, a global provider of grinding machine technology and its North American arm United Grinding Techologies are now ...
INDUSTRY NEWS | 2013-11-01

3M Introduces Cubitron II Conventional Wheels for Gear Grinding

3M Abrasive Systems is introducing 3M Cubitron II Conventional Wheels for Gear Grinding, giving engineers new tools to take the manufactu...
FEATURE ARTICLES | 2013-10-01

The Art of Versatility - Grinding at Gear Expo and EMO

Whether you spent time at Gear Expo in Indianapolis or EMO in Hannover, there was certainly new technology attracting attention. Machine tools are faster, more efficient and can integrate numerous functions in a single setup. Grinding technology is turning science upside down and inside out with high-speed removal rates and increased throughput.
INDUSTRY NEWS | 2013-06-20

Norton Grinding Abrasives Feature Bond Technology

Norton Abrasives, a brand of Saint-Gobain, has developed and launched Norton Vitrium3,  the next generation of bonded abrasives prod...
ASK THE EXPERT | 2013-06-01

Worn Gear Contact Analysis

How does one perform a contact analysis for worn gears? Our expert responds.
EVENTS | 2013-06-01

Liebherr Touts Technology at Latest Gear Seminar

For two days in Saline, Michigan, Liebherr's clients, customers and friends came together to discuss the latest gear products and technology. Peter Wiedemann, president of Liebherr Gear Technology Inc., along with Dr.-Ing. Alois Mundt, managing director, Dr.-Ing. Oliver Winkel, head of application technology, and Dr.-Ing. Andreas Mehr, technology development shaping and grinding, hosted a variety of informative presentations.
INDUSTRY NEWS | 2013-05-31

Holroyd Launches Worm Gear Grinding Stations

Holroyd Precision Limited has launched a brand new, full CNC machine range that is specifically designed to provide ultra-high levels of ...
PRODUCT NEWS | 2013-05-01

Liebherr LFG Grinding Machine

This machine concept facilitates highly productive profile grinding for large workpieces. The range for external and internal gears comprises models for manufacturing workpieces up to 2,000 millimeters – for industrial gear units, wind power, and marine propulsion applications
FEATURE ARTICLES | 2013-05-01

Delivering Big Gears Fast

When a customer needed gears delivered in three weeks, here’s how Brevini Wind got it done.
INDUSTRY NEWS | 2013-03-27

Gleason Offers Profile Grinding on Threaded Wheel Gear Grinding Machines

Gleason Corporation  recently announced the availability of a Profile Grinding option for its 300TWG Threaded Wheel Grinding Machine...
INDUSTRY NEWS | 2013-03-12

EMAG Offers Hard Turning and Grinding Advantages

The advantages of the process combination hard turning + grinding lie in process stream consolidation, improved component quality and gre...
PRODUCT NEWS | 2013-01-01

Product News

The complete Product News section from the January/February 2013 issue of Gear Technology.
INDUSTRY NEWS | 2012-12-27

Gleason Offers Wobble Compensation in Gear Grinding

Conventional grinding cycles for cylindrical gears typically involve a significant amount of time dedicated to the manual alignment of th...
INDUSTRY NEWS | 2012-11-01

Waterjet Service Inc. Changes Name to WSI Waterjet Systems International

WSI Waterjet Systems International (formerly named Waterjet Service Inc.) , the globally established, recommended and trusted designer, m...
INDUSTRY NEWS | 2012-10-22

Renishaw Named Best U.K. Electronic and Electrical Plant

Renishaw's assembly facility at Woodchester in Gloucestershire has been named as the U.K.'s Best Electronics & Electrical Pla...
PRODUCT NEWS | 2012-10-01

Product News

The complete Product News section from the October 2012 issue of Gear Technology.
FEATURE ARTICLES | 2012-10-01

Gear Grinding Gets Integrated at IMTS 2012

The latest machines, tooling and technology for gear grinding were featured at IMTS 2012.
FEATURE ARTICLES | 2012-09-01

IMTS 2012 Product Preview

Previews of manufacturing technology related to gears that will be on display at IMTS 2012.
FEATURE ARTICLES | 2012-06-01

Growing Pains - Renewables Hang on in Turbulent Energy Market

The turbines are still spinning. They’re spinning on large wind farms in the Great Plains, offshore in the Atlantic and even underwater where strong tidal currents offer new energy solutions. These turbines spin regularly while politicians and policy makers— tied up in discussions on tax incentives, economic recovery and a lot of finger pointing—sit idle. Much like the auto and aerospace industries of years past, renewable energy is coping with its own set of growing pains. Analysts still feel confident that clean energy will play a significant role in the future of manufacturing—it’s just not going to play the role envisioned four to five years ago.
EVENTS | 2012-05-01

Technical Calendar

The complete Technical Calendar from the May 2012 issue of Gear Technology.
FEATURE ARTICLES | 2011-09-01

Next Stop Cincinnati

What's not to like about a more focused, user-friendly Gear Expo? Booth Previews.
FEATURE ARTICLES | 2011-03-01

Grinding, Finishing and Software Upgrades Abound

Machine tool companies are expanding capabilities to better accommodate the changing face of manufacturing. Customers want smaller-sized equipment to take up less valuable floor space, multifunctional machines that can handle a variety of operations and easy set-up changes that offer simplified operation and maintenance.
FEATURE ARTICLES | 2010-05-01

Your Tax Dollars at Work: U.S. Commerce Department, Your Boots on the Ground Overseas

Easily one of the central issues affecting U.S. manufacturing is what one might call the exports deficit—the inability of American companies to sell products to, for instance, Asian markets, developing countries and other ports of call—due to what they perceive to be unfair trade agreements and or policies.
FEATURE ARTICLES | 2010-05-01

The Counterfeit Culture: Fake Products and Parts Present Global Market Challenges

It’s happened to most manufacturers at one point or another. A defective product comes back from a customer in need of repair. Perhaps a bearing or a gear drive has failed, and the customer simply needs a replacement. Upon further examination, the company realizes it was never one of its products in the first place, but a fabricated copy that snuck into the market. The manufacturing community has been dealing with counterfeit products for decades, but used machinery dealers and Internet shoppers seem to continuously get hit by scam artists.
TECHNICAL ARTICLES | 2010-01-01

Producing Profile and Lead Modifications in Threaded Wheel and Profile Grinding

Modern gearboxes are characterized by high torque load demands, low running noise and compact design. In order to fulfill these demands, profile and lead modifications are being applied more often than in the past. This paper will focus on how to produce profile and lead modifications by using the two most common grinding processes—threaded wheel and profile grinding. In addition, more difficult modifications—such as defined flank twist or topological flank corrections—will also be described in this paper.
FEATURE ARTICLES | 2009-09-01

Grinding Gears for Racing Transmissions

When you push 850 horsepower and 9,000 rpm through a racing transmission, you better hope it stands up. Transmission cases and gears strewn all over the racetrack do nothing to enhance your standing, nor that of your transmission supplier.
TECHNICAL ARTICLES | 2009-07-01

Extending the Benefits of Elemental Gear Inspection

It may not be widely recognized that most of the inspection data supplied by inspection equipment, following the practices of AGMA Standard 2015 and similar standards, are not of elemental accuracy deviations but of some form of composite deviations. This paper demonstrates the validity of this “composite” label by first defining the nature of a true elemental deviation and then, by referring to earlier literature, demonstrating how the common inspection practices for involute, lead (on helical gears), pitch, and, in some cases, total accumulated pitch, constitute composite measurements.
TECHNICAL ARTICLES | 2009-06-01

Innovative Concepts for Grinding Wind Power Energy Gears

This article shows the newest developments to reduce overall cycle time in grinding wind power gears, including the use of both profile grinding and threaded wheel grinding.
TECHNICAL ARTICLES | 2009-05-01

How Are You Dealing with the Bias Error in Your Helical Gears

This paper initially defines bias error—the “twisted tooth phenomenon.” Using illustrations, we explain that bias error is a by-product of applying conventional, radial crowning methods to produced crowned leads on helical gears. The methods considered are gears that are finished, shaped, shaved, form and generated ground. The paper explains why bias error occurs in these methods and offers techniques used to limit/eliminate bias error. Sometimes, there may be a possibility to apply two methods to eliminate bias error. In those cases, the pros/cons of these methods will be reviewed.
TECHNICAL ARTICLES | 2009-03-01

Grinding Induced Changes in Residual Stresses of Carburized Gears

This paper presents the results of a study performed to measure the change in residual stress that results from the finish grinding of carburized gears. Residual stresses were measured in five gears using the x-ray diffraction equipment in the Large Specimen Residual Stress Facility at Oak Ridge National Laboratory.
TECHNICAL ARTICLES | 2009-01-01

Gear Failure Analysis Involving Grinding Burn

When gears are case-hardened, it is known that some growth and redistribution of stresses that result in geometric distortion will occur. Aerospace gears require post case-hardening grinding of the gear teeth to achieve necessary accuracy. Tempering of the case-hardened surface, commonly known as grinding burn, occurs in the manufacturing process when control of the heat generation at the surface is lost.
TECHNICAL ARTICLES | 2009-01-01

Effects of Gear Surface Parameters on Flank Wear

Non-uniform gear wear changes gear topology and affects the noise performance of a hypoid gear set. The aggregate results under certain vehicle driving conditions could potentially result in unacceptable vehicle noise performance in a short period of time. This paper presents the effects of gear surface parameters on gear wear and the measurement/testing methods used to quantify the flank wear in laboratory tests.
TECHNICAL ARTICLES | 2008-08-01

Influence of Grinding Burn on Pitting Capacity

This paper intends to determine the load-carrying capacity of thermally damaged parts under rolling stress. Since inspection using real gears is problematic, rollers are chosen as an acceptable substitute. The examined scope of thermal damage from hard finishing extends from undamaged, best-case parts to a rehardening zone as the worst case. Also, two degrees of a tempered zone have been examined.
TECHNICAL ARTICLES | 2008-08-01

Guidelines for Modern Bevel Gear Grinding

This paper acknowledges the wide variety of manufacturing processes--especially in grinding--utlized in the production of bevel gears...
VOICES | 2008-07-01

Entrepreneurialism and Survival in the Global Market

Joe Arvin of Arrow Gear gives his insight on what it takes to succeed in today's gear industry.
PRODUCT NEWS | 2008-06-01

HMC Lassos World's Largest Gear Grinder

Hofler Rapid 6000 Makes North American Debut at Highway Machine Company.
INDUSTRY NEWS | 2007-06-15

Kapp's Rotor Grinding Technology Improves Efficiency by 30 Percent

The Kapp RX 59 allows the rotors used in air compressors to be manufactured on the machines by using a high precision grinding process.Ro...
INDUSTRY NEWS | 2007-05-29

Cinetec Grinding Moves Headquarters to Hagerstown, Maryland

Cinetic Landis Grinding Corp. relocated its headquarters and manufacturing/assembly facility approximately 15 miles to Hagerstown, MD. ...
INDUSTRY NEWS | 2007-05-24

Schafer Gear Adds New Grinding Equipment

Schafer Gear Works invested in new production equipment, including new gear grinding machines in the company's South Bend, IN, and Ro...
ADDENDUM | 2007-03-01

Bowling for Gears

Here's what Dennis was thinking...
INDUSTRY NEWS | 2007-01-09

Makino’s New Grinding Machining Center Grinds, Drills, Bores and Mills on the Same Machine

Makino introduced the G5 Grinder horizontal machining center, capable of grinding, drilling, boring and milling all on the same machine. ...
PUBLISHER'S PAGE | 2007-01-01

What Do You Think

Publisher Michael Goldstein wants to know what you think about the 2007 redesign of Gear Technology magazine
TECHNICAL ARTICLES | 2006-11-01

Optimization of the Gear Profile Grinding Process Utilizing an Analogy Process

In order to grind gears burn-free and as productively as possible, a better understanding of the process is required.
PRODUCT NEWS | 2006-07-01

Drake's Newest Thread Grinder Utilizes Robot Load-Unload System

The GS:TE-LM thread grinder from Drake Manufacturing is fitted with a robot load/unload system that provides maximum throughput for high-volume production of ground threads.
INDUSTRY NEWS | 2006-04-30

Rexnord Sold to Apollo for $1.8 Billion

Apollo Management LP bought Rexnord Corp. from The Carlyle Group for $1.825 billion. The Carlyle Group announced the transaction on th...
INDUSTRY NEWS | 2006-04-14

Service Network and Worcester Polytechnik Launch Grinding Consortium

Service Network is spearheading an effort with Worcester Polytechnic Institute to form a grinding research center located in Worcester, M...
INDUSTRY NEWS | 2006-04-12

Zero Max’s New Linear Actuators Convert Rotary Motion into Precise Linear Motion

The Roh’lix linear actuators from Zero-Max convert rotary motion to linear travel and carry loads at speeds up to 70" per second, de...
INDUSTRY NEWS | 2006-04-11

United Grinding?s Newest Machine Grinds Shafts and Chucked Workpieces

[photo] The Studen S242 from United Grinding is designed for the hard turning and grinding of high-precision applications for both shaf...
INDUSTRY NEWS | 2006-04-11

Alpha Gear’s Gearmotor Offers Significant Reduction in Inertia

The TPM from alpha gear drives Inc. is a geared motor containing a rotary actuator based on an AC servo motor and high precision planetar...
INDUSTRY NEWS | 2006-04-11

Ondrives’ New Gearbox Emphasizes Torque and Speed

A new line of DC motorized worm and wheel reduction gearboxes from Ondrives is fitted with 24V DC motors that operate at 12V DC. Accor...
INDUSTRY NEWS | 2006-04-11

Norton’s New Gear Grinding Wheels Increase Life of Parallel Axis Spur Gears

The new BRGg VPHS high speed grinding wheels from Saint Gobain are designed to reduce cycle times by increasing metal removal rates. The ...
INDUSTRY NEWS | 2006-04-06

New Depressed Center Wheels Introduced by Camel Grinding Wheels

CGW-Camel Grinding Wheels has introduced Fast Cut Series Aluminum Oxide Type 27 Depressed Center Wheels with N-grade bond for right angle...
INDUSTRY NEWS | 2006-03-14

Balzers Opens Coating Center in Houston

Balzers, Inc. opened a new coating center in Houston, Texas. As of January 30, 2006, the Houston Center began coating production of ...
INDUSTRY NEWS | 2006-02-06

HD Systems Merges with Harmonic Drive Technologies

HD Systems Inc. and Harmonic Drive Technologies, Nabtesco Inc. have merged, effective Jan. 1, 2006. The newly formed joint companny wi...
INDUSTRY NEWS | 2006-01-10

Mitsubishi Gear Technology Adds Holroyd Machine

Mitsubishi Gear Technology Center has added the Holroyd GTG2 precision helical grinding machine to its portfolio. Ian Shearing, vice p...
INDUSTRY NEWS | 2006-01-06

Samputensil Introduces High Capacity Grinding Machine

The new 250G generating grinding machine from Samputensili, introduced at EMO 2005 was developed to achieve a shorter cycle time. Acco...
TECHNICAL ARTICLES | 2005-09-01

What to Know About Bevel Gear Grinding

Guidelines are insurance against mistakes in the often detailed work of gear manufacturing. Gear engineers, after all, can't know all the steps for all the processes used in their factories.
TECHNICAL ARTICLES | 2005-09-01

A Split Happened on the Way to Reliable, Higher-Volume Gear Grinding

Bevel gear manufacturers live in one of two camps: the face hobbing/lapping camp, and the face milling/grinding camp.
FEATURE ARTICLES | 2005-07-01

Opportunities for Gear Grinders - Insights from the Machinery Front

Tom Lang of Kapp Technologies shares his views on the trends affecting ground gears.
INDUSTRY NEWS | 2005-04-21

New Frequency Inverter from SEW Eurodrive

The Movitrac Lte frequency inverter is a system design to meet the size and startup constraints that industrial applications often place ...
INDUSTRY NEWS | 2005-04-13

Bonfiglioli Acquires Tecnoingranaggi

Bonfiglioli acquired Tecnoingranaggi, a Bologna-based supplier of planetary gear units. According to the company's press release, ...
INDUSTRY NEWS | 2005-02-13

REM Chemicals and Rosler GmbH Partner in Metal Finishing

REM Chemicals Inc.and Rosler GmbH developed a 20-year global marketing partnership for chemically-accelerated mass finishing processes, m...
INDUSTRY NEWS | 2005-02-09

New High-Speed Inspection System from Renishaw

Introduced at EMO, the Renscan5 high-speed inspection system from Renishaw delivers part inspection speeds up to 20 times faster than con...
INDUSTRY NEWS | 2005-02-07

Sigma Pool Merges All Grinding Activities

Sigma Pool partners have merged all activities in the field of cylindrical gear grinding under the roof of Liebherr-Verzahntechnik GmbH i...
INDUSTRY NEWS | 2005-01-07

Rush Gears Publishes New Gear Design Guide

Rush Gears published a complete design guide that identifies 120,000 pre-engineered English and Western metric gears, gear formulas, hors...
TECHNICAL ARTICLES | 2005-01-01

Holroyd Launches New Gear Grinder

New machine promises DIN 2 accuracy and unique features at low cost.
TECHNICAL ARTICLES | 2004-09-01

Surface Damage Caused by Gear Profile Grinding and its Effects on Flank Load Carrying Capacity

Instances of damage to discontinuous form ground and surface-hardened gears, especially of large scale, have recently increased. This may be attributed partly to a faulty grinding process with negative effects on the surface zones and the surface properties.
TECHNICAL ARTICLES | 2004-05-01

Grinding and Abrasives

Flexibility and productivity are the keywords in today’s grinding operations. Machines are becoming more flexible as manufacturers look for ways to produce more parts at a lower cost. What used to take two machines or more now takes just one.
TECHNICAL ARTICLES | 2004-05-01

Winds of Change in Profile Grinding

Recent breakthroughs in profile grinding software are helping Anderson Precision Gears and others meet wind power’s insatiable appetite for faster production of large, high-quality gears.
INDUSTRY NEWS | 2004-04-17

Manufacturing Association Elects New Board of Directors

The Association for Manufacturing Technology has its elected new officers at their 2004 conference in Bonita Springs, FL. David J. Bu...
INDUSTRY NEWS | 2004-04-16

New Measuring Machine from Mahr Federal

The MarVision from Mahr Federal is designed to provide a mid-sized solution for high precision applications that require multiple modes o...
INDUSTRY NEWS | 2004-01-22

Executive Promotions at Hawk

Steven J. Campbell was promoted to senior vice president at Hawk Corp. and president of the company's performance racing segment. ...
INDUSTRY NEWS | 2004-01-04

New Managers at M&M Precision

Mark Cowan and John Zahora joined M&M Precision Systems Corp. of Willoughby, OH, in different management positions. According to the ...
INDUSTRY NEWS | 2003-12-06

New Flathoning Machines from Stahli

The Model DLM flathoning machine 705 from Stahli features a new construction and allows for faster processing speeds. According to the...
FEATURE ARTICLES | 2003-11-01

Gear Grinding 2003

The benefits of ground gears are well known. They create less noise, transmit more power and have longer lives than non-ground gears. But grinding has always been thought of as an expensive process, one that was necessary only for aerospace or other high-tech gear manufacturing.
PRODUCT NEWS | 2003-07-01

Product News

Complete Product News for July/August 2003.
TECHNICAL ARTICLES | 2002-11-01

The Barkhausen Noise Inspection Method for Detecting Grinding Damage in Gears

When hardened steel components are ground, there is always the possibility of damage to the steel in the form of residual stress or microstructural changes. Methods for detecting this sort of damage have always had one or more drawbacks, such as cost, time, complexity, subjectivity, or the use of hazardous chemicals.
INDUSTRY NEWS | 2002-05-01

Industry News

Complete Industry News for May/June 2002.
INDUSTRY NEWS | 2001-01-01

Industry News

Complete Industry News for January/February 2001.
TECHNICAL ARTICLES | 2000-11-01

Parallel Axis Gear Grinding: Theory & Application

The goal of gear drive design is to transit power and motion with constant angular velocity. Current trends in gear drive design require greater load carrying capacity and increased service life in smaller, quieter, more efficient gearboxes. Generally, these goals are met by specifying more accurate gears. This, combined with the availability of user-friendly CNC gear grinding equipment, has increased the use of ground gears.
FEATURE ARTICLES | 2000-09-01

Gear Up for Performance: An Introduction to Synthetic Lubricants for Fractional Horespower Applications

Editor's Note: The following article details the advantages of synthetic lubricants in certain applications. However, the user should be aware of certain design issues arising from the extract chemistry of the synthetic. For example, some synthetics may have low solvency for additives. Others may not be compatible with mineral oils or nonmetallic components such as seals and paints. Some synthetics may absorb water and may not have the same corrosion resistance as mineral oils. Finally, the user should consider biodegradability or toxicity before switching to any new lubricant. Many of these concerns are present in petroleum-based lubricants as well, so consult a lubrication specialist before specifying a lubricant.
TECHNICAL ARTICLES | 1999-09-01

Gear Grinding With Dish Wheels

The grinding of gears with dish wheels (Maad type grinding machines) is widely viewed as the most precise method of gear grinding because of the very short and simple kinematic links between the gear and the tool, and also because the cutting edges of the wheels represent planar surfaces. However, in this grinding method, depending on the parameters of the gears and one of the adjustments (such as the number of teeth encompassed by the grinding wheels), so-called overtravel at the tip or at the root of the teeth being ground generally occurs. When this happens, machining with only one wheel takes place. As a result, the profile error and the length of the generating path increases while productivity decreases.
PUBLISHER'S PAGE | 1999-03-01

Navigating Uncharted Waters in Cyberspace

I'd like to share with you a vision of the future. It takes place in cyberspace, and it's coming soon to a computer near you. Whether you like it or not, and whether you're ready or not, the Internet is changing the way business is conducted.
TECHNICAL ARTICLES | 1999-01-01

Selection of the Optimal Parameters of the Rack-Tool to Ensure the Maximum Gear Tooth Profile Accuracy

An analysis of possibilities for the selection of tool geometry parameters was made in order to reduce tooth profile errors during the grinding of gears by different methods. The selection of parameters was based on the analysis of he grid diagram of a gear and a rack. Some formulas and graphs are presented for the selection of the pressure angle, module and addendum of the rack-tool. The results from the grinding experimental gears confirm the theoretical analysis.
FEATURE ARTICLES | 1998-05-01

New Guidelines For Wind Turbine Gearboxes

The wind turbine industry has been plagued with gearbox failures, which cause repair costs, legal expenses, lost energy production and environmental pollution.
TECHNICAL ARTICLES | 1998-05-01

Hard Gear Finishing With CBN-Basic Considerations

For over 50 years, grinding has been an accepted method of choice for improving the quality of gears and other parts by correcting heat treat distortions. Gears with quality levels better than AGMA 10-11 or DIN 6-7 are hard finished, usually by grinding. Other applications for grinding include, but are not limited to, internal/external and spur/helical gear and spline forms, radius forms, threads and serrations, compressor rotors, gerotors, ball screw tracks, worms, linear ball tracks, rotary pistons, vane pump rotators, vane slots, and pump spindles.
FEATURE ARTICLES | 1998-03-01

New Guideless CNC Shaper for Helical Gears

Product announcements so often trumpet minor, incremental advances with works like "revolutionary" and "unique" that even the best thesaurus can fail to offer a fresh alternative to alert the reader when something really innovative and important is introduced. In the case of Mitsubishi's new CNC gear shaper, the ST25CNC, both terms apply.
TECHNICAL ARTICLES | 1998-01-01

Influence of Gear Design on Gearbox Radiated Noise

A major source of helicopter cabin noise (which has been measured at over 100 decibels sound pressure level) is the gearbox. Reduction of this noise is a NASA and U.S. Army goal. A requirement for the Army/NASA Advanced Rotorcraft Transmission project was a 10 dB noise reduction compared to current designs.
TECHNICAL ARTICLES | 1997-05-01

Eddy Current Examination of Gear Systems

Nondestructive examination (NDE) of ferrous and nonferrous materials has long proved an effective maintenance and anomaly characterization tool for many industries. Recent research has expanded its applicability to include the inspection of large, open gear drives. Difficulties inherent in other NDE methods make them time-consuming and labor-intensive. They also present the user with the environmental problem of the disposal of used oil. The eddy current method addresses these problems.
TECHNICAL ARTICLES | 1997-05-01

Profile Grinding Gears From The Solid - Is It Practical

It isn't for everyone, but... Within the installed base of modern CNC gear profile grinding machines (approximately 542 machines worldwide), grinding from the solid isn't frequent, but a growing number of gear profile grinder users are applying it successfully using CBN-plated wheels.
TECHNICAL ARTICLES | 1997-05-01

CNC Gear Grinding Methods

Grinding in one form or another has been used for more than 50 years to correct distortions in gears caused by the high temperatures and quenching techniques associated with hardening. Grinding improves the lead, involute and spacing characteristics. This makes the gear capable of carrying the high loads and running at the high pitch line velocities required by today's most demanding applications. Gears that must meet or exceed the accuracy requirements specified by AGMA Quality 10-11 or DIN Class 6-7 must be ground or hard finished after hear treatment.
EVENTS | 1997-03-01

Technical Calendar

Complete Technical Calendar for March/April 1997.
FEATURE ARTICLES | 1995-07-01

George Wyss & Dennis Richmond of Reishauer Corporation

For this interview, we spoke with George Wyss, president, and Dennis Richmond, vice president of Reishauer Corporation about gear grinding and its place in gear manufacturing today.
TECHNICAL ARTICLES | 1995-07-01

Gear Grinding Comes of Age

In the quest for ever more exacting and compact commercial gears, precision abrasives are playing a key production role - a role that can shorten cycle time, reduce machining costs and meet growing market demand for such requirements as light weights, high loads, high speed and quiet operation. Used in conjunction with high-quality grinding machines, abrasives can deliver a level of accuracy unmatched by other manufacturing techniques, cost-effectively meeting AGMA gear quality levels in the 12 to 15 range. Thanks to advances in grinding and abrasive technology, machining has become one of the most viable means to grind fast, strong and quiet gears.
TECHNICAL ARTICLES | 1995-07-01

How to Avoid Errors When Measuring Step Gears

There are problems in dimensional measurement that should be simple to solve with standard measuring procedures, but aren't. In such cases, using accepted practices may result in errors of hundreds of microns without any warning that something is wrong.
FEATURE ARTICLES | 1995-07-01

Gear Grinding 1995

Gear grinding is one of the most expensive and least understood aspects of gear manufacturing. But with pressures for reduced noise, higher quality and greater efficiency, gear grinding appears to be on the rise.
TECHNICAL ARTICLES | 1994-05-01

Designing Hardened & Ground Spur Gears to Operate With Minimum Noise

When designing hardened and ground spur gears to operate with minimum noise, what are the parameters to be considered? should tip and/or root relief be applied to both wheel and pinion or only to one member? When pinions are enlarged and he wheel reduced, should tip relief be applied? What are the effects on strength, wear and noise? For given ratios with enlarged pinions and reduced wheels, how can the gear set sized be checked or adjusted to ensure that the best combination has been achieved?
INDUSTRY NEWS | 1994-05-01

Choosing An ISO 9000 Consultant: Why, When & How

On of the key questions confronting any company considering ISO 9000 certification is, how much is this going to cost? The up-front fees are only the beginning. Dissect the ISO 9000 certification procedure with an eye for hidden costs, and two segments of the process will leap out - the cost of consultants and the cost of making in-house improvements for the sake of passing certification. Most of these costs can be controlled by careful selection f the right consultant in the first place.
TECHNICAL ARTICLES | 1994-01-01

Grinding Bevel Gears on Cylindrical Gear Grinding Machines

Power train designs which employ gears with cone angles of approximately 2 degrees to 5 degrees have become quite common. It is difficult, if not impossible, to grind these gears on conventional bevel gear grinding machines. Cylindrical gear grinding machines are better suited for this task. This article will provide an overview of this option and briefly introduce four grinding variation possibilities.
TECHNICAL ARTICLES | 1994-01-01

Generation of Helical Gears with New Surface Topology by Application of CNC Machines

Analysis of helical involute gears by tooth contact analysis shows that such gears are very sensitive to angular misalignment leading to edge contact and the potential for high vibration. A new topology of tooth surfaces of helical gears that enables a favorable bearing contact and a reduced level of vibration is described. Methods for grinding helical gears with the new topology are proposed. A TCA program simulating the meshing and contact of helical gears with the new topology has been developed. Numerical examples that illustrate the proposed ideas are discussed.
TECHNICAL ARTICLES | 1993-11-01

CBN Gear Grinding - A Way to Higher Load Capacity

Because of the better thermal conductivity of CBN abrasives compared to that of conventional aluminum oxide wheels, CBN grinding process, which induces residual compressive stresses into the component, and possibly improves the subsequent stress behavior. This thesis is the subject of much discussion. In particular, recent Japanese publications claim great advantages for the process with regard to an increased component load capacity, but do not provide further details regarding the technology, test procedures or components investigated. This situation needs clarification, and for the this reason the effect of the CBN grinding material on the wear behavior and tooth face load capacity of continuously generated ground gears was further investigated.
TECHNICAL ARTICLES | 1993-07-01

CNC Bevel Gear Generators and Flared Cup Gear Grinding

New freedom of motion available with CNC generators make possible improving tooth contact on bevel and hypoid gears. Mechanical machines by their nature are inflexible and require a special mechanism for every desired motion. These mechanisms are generally exotic and expensive. As a result, it was not until the introduction of CNC generators that engineers started exploring motion possibilities and their effect on tooth contact.
INDUSTRY NEWS | 1993-07-01

Gear Tip Chamfer and Gear Noise; Surface Measurement of Spiral Bevel Gear Teeth

Could the tip chamfer that manufacturing people usually use on the tips of gear teeth be the cause of vibration in the gear set? The set in question is spur, of 2.25 DP, with 20 degrees pressure angle. The pinion has 14 teeth and the mating gear, 63 teeth. The pinion turns at 535 rpm maximum. Could a chamfer a little over 1/64" cause a vibration problem?
TECHNICAL ARTICLES | 1993-05-01

Initial Design of Gears Using an Artificial Neural Net

Many CAD (Computer Aided Design) systems have been developed and implemented to produce a superior quality design and to increase the design productivity in the gear industry. In general, it is true that a major portion of design tasks can be performed by CAD systems currently available. However, they can only address the computational aspects of gear design that typically require decision-making as well. In most industrial gear design practices, the initial design is the critical task that significantly effects the final results. However, the decisions about estimating or changing gear size parameters must be made by a gear design expert.
TECHNICAL ARTICLES | 1992-07-01

Grinding of Spur and Helical Gears

Grinding is a technique of finish-machining, utilizing an abrasive wheel. The rotating abrasive wheel, which id generally of special shape or form, when made to bear against a cylindrical shaped workpiece, under a set of specific geometrical relationships, will produce a precision spur or helical gear. In most instances the workpiece will already have gear teeth cut on it by a primary process, such as hobbing or shaping. There are essentially two techniques for grinding gears: form and generation. The basic principles of these techniques, with their advantages and disadvantages, are presented in this section.
EVENTS | 1992-01-01

Calendar

Complete calendar for January/February 1992
VOICES | 1991-11-01

Viewpoint

Dear Editor: In Mr. Yefim Kotlyar's article "Reverse Engineering" in the July/August issue, I found an error in the formula used to calculate the ACL = Actual lead from the ASL = Assumed lead.
TECHNICAL ARTICLES | 1991-05-01

The Lubrication of Gears - Part II

What follows is Part 2 of a three-part article covering the principles of gear lubrication. Part 2 gives an equation for calculating the lubricant film thickness, which determines whether the gears operate in the boundary, elastohydrodynamic, or full-film lubrication regime. An equation for Blok's flash temperature, which is used for predicting the risk of scuffing, is also given.
TECHNICAL ARTICLES | 1991-03-01

Hard Finishing By Conventional Generating and Form Grinding

The quality of a gear and its performance is determined by the following five parameters, which should be specified for each gear: Pitch diameter, involute form, lead accuracy, spacing accuracy, and true axis of rotation. The first four parameters can be measured or charted and have to be within tolerance with respect to the fifth. Pitch diameter, involute, lead, and spacing of a gear can have master gear quality when measured or charted on a testing machine, but the gear might perform badly if the true axis of rotation after installation is no longer the same one used when testing the gear.
TECHNICAL ARTICLES | 1991-01-01

Influence of CBN Grinding on Quality and Endurance of Drive Train Components

The merits of CBN physical characteristics over conventional aluminum oxide abrasives in grinding performance are reviewed. Improved surface integrity and consistency in drive train products can be achieved by the high removal rate of the CBN grinding process. The influence of CBN wheel surface conditioning procedure on grinding performance is also discussed.
TECHNICAL ARTICLES | 1990-07-01

Efficient Methods for the Synthesis of Compound Planetary Differential Gear Trains for Multiple Speed Ratio Generation

This article presents an efficient and direct method for the synthesis of compound planetary differential gear trains for the generation of specified multiple speed ratios. It is a train-value method that utilizes the train values of the integrated train components of the systems to form design equations which are solved for the tooth numbers of the gears, the number of mating gear sets and the number of external contacts in the system. Application examples, including vehicle differential transmission units, rear-end differentials with unit and fractional speed ratios, multi-input functions generators and robot wrist joints are given.
TECHNICAL ARTICLES | 1990-05-01

Shaper Cutters - Design & Application - Part 2

Cutter Sharpening Cutter sharpening is very important both during manufacturing and subsequently in resharpening after dulling. Not only does this process affect cutter "over cutting edge" quality and the quality of the part cut, but it can also affect the manner in which chip flow takes place on the cutter face if the surface finished is too rough or rippled.
TECHNICAL ARTICLES | 1989-11-01

Hard Finishing and Fine Finishing Part 2

After shaping or hobbing, the tooth flanks must be either chamfered or duburred. Here it is paramount that the secondary burr produced will not be formed into the flank, but to the face of the gear, because during hardening, the secondary burr will straighten up and, due to its extreme hardness, will lead to excessive tool wear.
TECHNICAL ARTICLES | 1989-09-01

Hard Finishing and Fine Finishing Part 1

Profitable hard machining of tooth flanks in mass production has now become possible thanks to a number of newly developed production methods. As used so far, the advantages of hard machining over green shaving or rolling are the elaborately modified tooth flanks are produced with a scatter of close manufacturing tolerances. Apart from an increase of load capacity, the chief aim is to solve the complex problem of reducing the noise generation by load-conditioned kinematic modifications of the tooth mesh. In Part II, we shall deal with operating sequences and machining results and with gear noise problems.
TECHNICAL ARTICLES | 1989-09-01

Gear Grinding Fundeamentals

This article deals with certain item to be taken into consideration for gear grinding, common problems that arise in gear grinding and their solutions. The discussion will be limited to jobbing or low-batch production environments, where experimental setup and testing is not possible for economic and other reasons.
TECHNICAL ARTICLES | 1989-01-01

Fillet Geometry of Ground Gear Teeth

This article investigates fillet features consequent to tooth grinding by generating methods. Fillets resulting from tooth cutting and tooth grinding at different pressure angles and with different positions of grinding wheel are compared. Ways to improve the final fillet of the ground teeth with regard to tooth strength and noise, as well as the grinding conditions, are shown. "Undergrinding" is defined and special designs for noiseless gears are described.
TECHNICAL ARTICLES | 1988-09-01

Enhanced Product Performance--Through CBN Grinding

Modern manufacturing processes have become an ally of the product designer in producing higher quality, higher performing components in the transportation industry. This is particularly true in grinding systems where the physical properties of CBN abrasives have been applied to improving cycle times, dimensional consistency, surface integrity and overall costs. Of these four factors, surface integrity offers the greatest potential for influencing the actual design of highly stressed, hardened steel components.
TECHNICAL ARTICLES | 1988-09-01

Crowned Spur Gears: Optimal Geometry and Generation

Involute spur gears are very sensitive to gear misalignment. Misalignment will cause the shift of the bearing contact toward the edge of the gear tooth surfaces and transmission errors that increase gear noise. Many efforts have been made to improve the bearing contact of misaligned spur gears by crowning the pinion tooth surface. Wildhaber(1) had proposed various methods of crowning that can be achieved in the process of gear generation. Maag engineers have used crowning for making longitudinal corrections (Fig. 1a); modifying involute tooth profile uniformly across the face width (Fig. 1b); combining these two functions in Fig. 1c and performing topological modification (Fig. 1d) that can provide any deviation of the crowned tooth surface from a regular involute surface. (2)
TECHNICAL ARTICLES | 1988-03-01

Hard Gear Finishing

Hard Gear Finishing (HGF), a relatively new technology, represents an advance in gear process engineering. The use of Computer Numerical Controlled (CNC) equipment ensures a high precision synchronous relationship between the tool spindle and the work spindle as well as other motions, thereby eliminating the need for gear trains. A hard gear finishing machine eliminates problems encountered in two conventional methods - gear shaving, which cannot completely correct gear errors in gear teeth, and gear rolling, which lacks the ability to remove stock and also drives the workpiece without a geared relationship to the master rolling gear. Such a machine provides greater accuracy, reducing the need for conventional gear crowning, which results in gears of greater face width than necessary.
TECHNICAL ARTICLES | 1987-11-01

Selection of Hobbing Data

The art of gear hobbing has advanced dramatically since the development and introduction of unique machine and tool features such as no backlash, super rigidity, automatic loading of cutting tools, CNC controls, additional machine power and improved cutter materials and coatings. It is essential to utilize all these features to run the machine economically.
TECHNICAL ARTICLES | 1986-11-01

Mirror Finishing of Tooth Surfaces Using A Trial Gear Grinder With Cubic-Boron-Nitride Wheel

In conventional gear grinders, grinding wheels with Alundum grains and a hardness of about 2000 HV have been used for finishing steel gears with hardnesses up to about 1000HV. In this case, the accuracy of the gears ground is greatly affected by wear of the grinding wheel because the difference in hardness is comparatively small when the gears are fully hardened.
FEATURE ARTICLES | 1986-05-01

Viewpoint

Sub: 'Finding Tooth Ratios' article published in Nov/Dec 1985 issue Let us congratulate you and Orthwein, W.C. for publishing this superb article in Gear Technology Journal. We liked the article very much and wish to impliment it in our regular practice.
FEATURE ARTICLES | 1986-05-01

A Wheel Selection Technique for Form Gear Grinding

Until recently, form gear grinding was conducted almost exclusively with dressable, conventional abrasive grinding wheels. In recent years, preformed, plated Cubic Boron Nitride (CBN) wheels have been introduced to this operation and a considerable amount of literature has been published that claim that conventional grinding wheels will be completely replaced in the future. The superior machining properties of the CBN wheel are not disputed in this paper.
FEATURE ARTICLES | 1986-01-01

Lower Grinding Costs and Better Workpiece Quality by High Performance Grinding with CBN Wheels

A considerable improvement in the performance of the machining of hard to grind materials can be achieved by means of CBN wheels.
VOICES | 1985-11-01

Industry Forum

One of the current research activities here at California State University at Fullerton is systematization of existing knowledge of design of planetary gear trains.
TECHNICAL ARTICLES | 1985-11-01

Technological Fundamentals of CBN Bevel Gear Finish Grinding

The bevel gear grinding process, with conventional wheels, has been limited to applications where the highest level of quality is required.
VOICES | 1985-09-01

Industry Forum

Your May/June issue contains a letter from Edward Ubert of Rockwell International with some serious questions about specifying and measuring tooth thickness.
TECHNICAL ARTICLES | 1985-03-01

Gear Grinding Techniques Parallel Axes Gears

The fundamental purpose of gear grinding is to consistently and economically produce "hard" or "soft" gear tooth elements within the accuracy required by the gear functions. These gear elements include tooth profile, tooth spacing, lead or parallelism, axial profile, pitch line runout, surface finish, root fillet profile, and other gear geometry which contribute to the performance of a gear train.
TECHNICAL ARTICLES | 1984-05-01

CNC Controlled CBN Form Grinding

Borazon is a superabrasive material originally developed by General Electric in 1969. It is a high performance material for machining of high alloy ferrous and super alloy materials. Borazon CBN - Cubic Born Nitride - is manufactured with a high temperature, high pressure process similar to that utilized with man-made diamond. Borazon is, next to diamond, the hardest abrasive known; it is more than twice as hard as aluminum oxide. It has an extremely high thermal strength compared to diamond. It is also much less chemically reactive with iron, cobalt or nickel alloys.
[advertisement]