Last year, when I wrote this column about our annual State-of-the-Gear-Industry survey, I urged most of you to consider whether you were working for one of those gear industry companies engaged with the future or one of those ignoring it. I feel like I could run the same words again, and they would still apply.
Manufacturers have a relatively new option that offers several key advantages—gear skiving on machining centers. Gear skiving on a mill-turn machining center with fully synchronous spindles is highly efficient, fast, and accurate. In some cases when producing small and medium-sized volumes, gear skiving will gradually replace established gear-cutting processes.
Gear tooth profile grinding, also known as form grinding, is a finishing method used in gear manufacturing. It involves the use of vitrified bonded grinding wheels to modify or correct the profile of gear teeth, often after heat treatment. The grinding wheel runs between two opposing teeth, grinding both surfaces at the same time.
Extremely accurate and impervious to contamination, hydraulic clamping is ideal for e-drive and other applications where producing high-precision gears is paramount.
In a world where hard finishing operations are now commonplace and high precision is the rule rather than the exception, many gear manufacturers are taking a closer look at workholding. Manufacturers have come to realize that workholding, long under-appreciated and over-looked, can play an important role in squeezing precious seconds out of idle time, help reduce costly runout on precision gear teeth to just a few microns, and cut the high cost of maintenance and repair.
Gear Technology’s annual State-of-the-Gear-Industry survey polls gear manufacturers about the latest trends and opinions relating to the overall health of the gear industry. As in years past, the survey was conducted anonymously, with invitations sent by email to our subscribers, AGMA members, and others in the gear industry. Primarily, our responses come from North America, but they also include responses from around the world. Nearly 200 individuals responded to the survey.
This paper presented some steps to get more insight into the effect of meshing damping on the dynamic response and noise emission of a two-stage gearbox transmission system. For this purpose, two variants of the model with different gear materials, one with plastic gears and one with steel gears, were considered. Both variants were designed for the same number of cycles of operation with similar root and flank safeties. The forced response analysis of the models was carried out and the exciting reaction bearing forces were calculated to evaluate which model can achieve better NVH characteristics results with lower noise emission from the housing.
This report investigates the wear morphology on the large end of tapered rollers and the inner ring's large end rib on a planet carrier TRB from a multi-megawatt wind turbine gearbox. The literature on abrasive wear has many classifications, including 2-body abrasion, 3-body abrasion, scratches, grooving abrasion, rolling abrasion, cutting abrasion, and plowing abrasion. For this analysis, we have selected grooving abrasion, a common problem in wind turbine gearboxes and a prominent failure mode on many bearings, particularly planetary carrier bearings and planet bearings. Grooving abrasion is frequently observed on cylindrical roller bearings (CRB) and tapered roller bearings (TRB). Fitzsimmons and Clevenger conducted tests on roller end/rib wear for TRBs with contaminated gear oil, and they provided an excellent explanation of the mechanism.
Gear Technology regularly covers machine tools, often referred to as “mother machines” due to their role in producing other machines, which serve as the cornerstone of industrial civilization by cutting or shaping metal. Think of all the gears in the machine tools that not only cut and polish gears but are indispensable for manufacturing a wide range of goods, with nearly every product being created either directly using machine tools or through machines manufactured using these tools.
As we embark on a new year, let’s review the current state of the gear industry, and how the changes of the past several years will shape our path forward. The insights garnered from Gear Technology’s annual survey offer a glimpse into the collective mindset of professionals in the field and help us understand how to plan for an ever-changing future.
There are many key performance gains when retrofitting a gear-cutting machine originating from the 1960s and 1970s. First, it can be noted that the new retrofitted CNC machine performs the same machining operations as the conventional mechanical machine, but - quite clearly - with an exponentially higher output. This is thanks to a reduction in set-up and production time and with a significantly higher quality of the finished gear.
Machining the teeth of a rotor shaft for electric cars has demanding machining requirements. Very few other applications place such high demands as transmission components. The very quiet motor requires the highest surface finishes so that disturbing running noises do not occur. In addition, the number of units in e-mobility is greatly increasing, which is an additional challenge for the mechanical engineering involved. What is needed, therefore, are process-reliable solutions for cost-effective rotor shaft production. EMAG Koepfer HLC 150 H gear hobbing machine demonstrates how this can work, ensuring new productivity in this gear sector.
Dayton Gear partnered with Helios Gear Products to install a new Hera 200 CNC gear hobber, followed shortly after by a Hera 500 CNC gear hobber. Helios had a chance to check in with Adam Baird and Brian Baird, 3rd generation at Dayton Gear, to see how their production has changed since the installation, and how they're planning and looking forward to the future.
With the release of the new Zeiss Inspect 3D metrology software, Zeiss offers its Industrial Quality Solutions customers numerous new functions. Zeiss Inspect Optical 3D is the solution for the inspection and evaluation of 3D measurement data. With this release, data acquisition is further accelerated and evaluation functions are further improved. The new Autosurfacing app also automatically converts scan data into a high-precision CAD model.
With its new adapter jaw, Schunk has established compatibility between machine vises and the world's broadest portfolio of top jaws from Schunk/Gressel. These useful connecting elements offer new and flexible clamping options for any machining task.
To ensure all customers and their machines benefit from digital assistance, GF Machining Solutions (GFMS) has launched their new My rConnect platform engineered for the company’s EDM, milling, and laser texturing machines. The all-encompassing platform allows shops to connect any model of GFMS machine for fast, responsive, and easily accessible service and support while also providing expanded digital capabilities.
The new Gear Trainer Program 2024 features new gear technology topics, including gear and transmission design, cutting and hard finishing processes, metrology and gear noise analysis, tools and workholding, as well as software updates and smart production systems. Gear Trainer Webinars take advantage of a mix of different media including live manufacturing and software demonstrations.
Euro-Tech Corporation in cooperation with Frenco, the precision specialist in gear & spline metrology, is offering a Free Material Upgrade for quotes between now and March 31, 2024.
Forest City Gear, an industry-leading manufacturer of fine and medium pitch custom gears, is proud to announce that Director of Operations Jared Lyford has been elected to the Rock River Valley Tooling & Machining Association (RRVTMA) Board of Directors.
To sharpen its focus on cutting tools, Monaghan Tooling Group has recently shuffled its line card and transitioned the sales, marketing, and service for Elliot Tool Technologies Precision Metal Finishing back to Elliot, where they will be handled in-house by the manufacturer. Monaghan personnel will work with current metal finishing, burnishing, recessing, and mechanical joining customers to ensure a smooth transition.
In its quest to become a global leader for productivity and safety solutions in the metalworking industry, Walter Surface Technologies is pleased to announce the acquisition of Greenfield Industries, a USA-based leading manufacturer of branded and private label cutting tools.
Verisurf Software, Inc. introduces a new sales platform where customers can source new and pre-owned CMMs powered by Verisurf software. All machines are calibrated and certified and include Verisurf CMM Programming and Inspection Suite software.
This new column is designed to provide information on the forward-thinking tech that is being reviewed and discussed in AGMA emerging technology committees. What should we be watching in the specific topic areas we cover? How will that impact the future of the gear industry? What are people discussing, specifically in the manufacturing space? I hope to be able to provide some of these answers in the coming issues.