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Splines

VIDEO | 2024-11-07

Penta Gear Focus

As a brand of Kapp Niles, Penta Gear designs, manufactures, and installs analytical metrology machines, while performing as a trusted source for contract gear and spline inspection.

INDUSTRY NEWS | 2024-01-29

Calculation of Involute Spline Extended

GWJ Technology GmbH introduces an extended version of the calculation module for involute splines within its web-based software solution eAssistant.

EVENT | 2022-09-22

AGMA Involute Spline Design & Rating

This course will address both geometry and rating of involute splines of various types. The types of spline joints and their applications will be discussed. Spline configuration variations, including half depth, full depth, and special function designs, will be addressed. Both fixed and flexible spline configurations will be examined in terms of usage and design. Lubrication methods, including grease, oil bath, and flowing oil, as well as coatings appropriate for various spline applications, are examined. Shear and compressive stress rating methods are discussed with analyses methodology presented in both equation and graphical methodology via various rating charts.

PRODUCT NEWS | 2022-07-18

Guill Offers Internal Spline Tool for Aerospace Applications

Guill Tool, a growing supplier of components to the global aerospace industry, has announced the production of a new internal spline tool made of anodized carbon steel. 

EVENT | 2022-06-01

AGMA Operator Hobbing & Shaper Cutting

Learn and understand fundamentals of gear manufacturing. Acquire knowledge and understanding of gear nomenclature, hobbing and shaping of spur and helical gears, and splines. Learn and understand hobber and shaper machine set-up, as well as gear tooth element inspection. 

INDUSTRY NEWS | 2022-05-29

AGMA Offers Online Course on Involute Spline Design and Rating

In July, Raymond J. Drago, P.E.—chief engineer of Drive Systems Technology, Inc. (DST), a mechanical power transmission consulting organization that he founded in 1976—will lead an IACET-accredited course on both the geometry and rating of involute splines of various types along with their applications. Topics under discussion include spline configuration variations, including half depth, full depth, and special function designs; both fixed and flexible spline configurations in terms of usage and design; lubrication methods, including grease, oil bath, and flowing oil, as well as coatings appropriate for various spline applications; and shear and compressive stress rating methods with analyses methodology in both equation and graphical methodology via various rating charts.

PRODUCT NEWS | 2022-04-13

esco GmbH Expands Skiving Software Portfolio

The company esco, a technology partner for process digitization in the gear and cutting tool industry, is adding a technology module to its software for the Power Skiving process chain.

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INDUSTRY NEWS | 2020-10-14

AGMA Releases Publication for Splines - Design and Application (Inch Edition)

AGMA Technical Division has released AGMA 945-2-B20, Splines - Design and application (Inch Edition).  AbstractThis information...
TECHNICAL ARTICLES | 2019-09-01

Design Parameters for Spline Connections

This article provides a guideline for the selection of a suitable standard in connection with the kind of spline to be designed and manufactured. Some basic formulae have been explained, together with a strategy on how to find standard tooling by calculating an appropriate profile shift factor for the spline to be designed.
ASK THE EXPERT | 2019-08-01

Defining the Spline Pressure Angle

A reader requests help designing the mating gear for an internal spline.
GEAR TALK WITH CHUCK | 2018-12-13

Pulling Back the Curtain

While there have been big changes on the design side of the gear trade, they are overshadowed by the improvements in the manufacturing processes. F...
GEAR TALK WITH CHUCK | 2018-08-16

Gear Design: What is it Going to Cost?

You may not ev...
PRODUCT NEWS | 2018-03-01

Frenco REANY Gear Inspection Software Melds Data from Multiple Sources

REANY is software for the evaluation of gears and splines that have been measured completely on all teeth. It is suited to both quality assessment and analyzing the causes for deviations. REANY is short for Reality Analysis.
INDUSTRY NEWS | 2017-09-22

KISSsoft Calculations Include Splines, Springs and Plain Hydrodynamic Bearings

KISSsoft's spline calculation now also includes a new function for calculating the strength of involute splined joints according to A...
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ASK THE EXPERT | 2017-05-01

Gear Teeth as Bearing Surfaces

A reader wonders about gears where the tops of the teeth are the bearing surface, as used in spur gear differentials. Do they require any special construction or processing?
GEAR TALK WITH CHUCK | 2017-04-19

Convergence in Design

One of the old car magazines I subscribe to has had an ongoing discussion on left-hand- threaded wheel studs. At one time the engineering community...
GEAR TALK WITH CHUCK | 2016-10-20

Non-Traditional Manufacturing

While 3-D printing looks for its place in the manufacturing world, other non-traditional methods are finding their way into our gear shops. Some, s...
GEAR TALK WITH CHUCK | 2016-09-22

Articles Wanted 

  In a short chat in the Gear Technology booth at the International Machine Tool Show the topic came up of what sort of articles o...
FEATURE ARTICLES | 2016-09-01

Innovating Against the Tide

During a year with a strong dollar, tanked oil prices and a number of soft markets that just aren't buying, one might expect spline manufacturers to be experiencing the same tumult everyone else is. But when I got a chance to speak with some of the suppliers to spline manufacturers at IMTS about how business is going, many of the manufacturing industry's recent woes never came up, and instead were replaced by a shrug and an "eh, business is doing pretty well."
GEAR TALK WITH CHUCK | 2016-08-23

Time for the Clan to Gather

  Has your e-mail inbox been full lately? It is a sure sign that the International Machine Tool Show (IMTS) is rapidly approaching. This ye...
GEAR TALK WITH CHUCK | 2016-01-19

A Wide World of Gears

Blogging from an American perspective can sometimes make me forget that the gear industry is active around the world. I get occasional reminders in...
GEAR TALK WITH CHUCK | 2015-10-22

3-D Printing Follow-Up

My initial skepticism about 3-D printing’s place in the gear industry took a solid hit during a recent visit to a client. I am used to seeing color...
GEAR TALK WITH CHUCK | 2015-07-30

New Ways to Make Old Parts

My last post discussed reviewing the ratings and designs of “legacy products,” those venerable parts and gearboxes still being ordered twenty, thir...
GEAR TALK WITH CHUCK | 2015-05-28

Formula 1 Gearbox Designs

As mentioned in my last blog, Formula 1 gearboxes are now highly integrated into the overall car design. The days of a “spec” transmission from a t...
GEAR TALK WITH CHUCK | 2015-02-24

Why is this Stuff Still so Complicated?

[starbox] Much of my engineering practice is working with companies that design machines only once in a while. I enjoy working with the people on ...
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

TECHNICAL ARTICLES | 2014-05-01

Load Distribution Analysis of Spline Joints

A finite elements-based contact model is developed to predict load distribution along the spline joint interfaces; effects of spline misalignment are investigated along with intentional lead crowning of the contacting surfaces. The effects of manufacturing tooth indexing error on spline load distributions are demonstrated by using the proposed model.
GEAR TALK WITH CHUCK | 2014-03-21

Action Items for the Gear Trade

[starbox] Recently I learned that it took over 20 years for the gear industry to agree on its first “standard” tooth form — and that was after s...
TECHNICAL ARTICLES | 2010-06-01

Variation Analysis of Tooth Engagement and Load Sharing in Involute Splines

Involute spline couplings are used to transmit torque from a shaft to a gear hub or other rotating component. External gear teeth on the shaft engage an equal number of internal teeth in the hub. Because multiple teeth engage simultaneously, they can transmit much larger torques than a simple key and keyway assembly. However, manufacturing variations affect the clearance between each pair of mating teeth, resulting in only partial engagement.
INDUSTRY NEWS | 2005-11-01

Industry News

The complete Industry News from the November/December 2005 issue of Gear Technology.
INDUSTRY NEWS | 2005-04-16

Frenco Adds Gage for Measuring Splines to Produce A Circumferential Backlash Measuring Instrument

Frenco has expanded its product line by starting to produce a circumferential backlash measuring instrument. According to its press r...
TECHNICAL ARTICLES | 1995-11-01

Determining Spline Misalignment Capabilities

Introducing backlash into spline couplings has been common practice in order to provide for component eccentric and angular misalignment. The method presented here is believed to be exact for splines with even numbers of teeth and approximate for those with odd numbers of teeth. This method is based on the reduction of the maximum effective tooth thickness to achieve the necessary clearance. Other methods, such as tooth crowning, are also effective.
TECHNICAL ARTICLES | 1994-09-01

A Comparison of ISO 4156-ANSI B92.2M - 1980 With Older Imperial Standards

The purpose of this article is to discuss ISO 4156/ANSI B92.2M-1980 and to compare it with other, older standards still in use. In our experience designing and manufacturing spline gauges and other spline measuring or holding devices for splined component manufacturers throughout the world, we are constantly surprised that so many standards have been produced covering what is quite a small subject. Many of the standards are international standards; others are company standards, which are usually based on international standards. Almost all have similarities; that is, they all deal with splines that have involute flanks of 30 degrees, 37.5 degrees or 45 degrees pressure angle and are for the most part flank-fitting or occasionally major-diameter-fitting.
TECHNICAL ARTICLES | 1990-09-01

Involute Splines

Engineering design requires many different types of gears and splines. Although these components are rather expensive, subject to direct wear, and difficult to replace, transmissions with gears and splines are required for two very simple reasons: 1) Motors have an unfavorable (disadvantageous) relation of torque to number of revolutions. 2)Power is usually required to be transmitted along a shaft.
TECHNICAL ARTICLES | 1985-05-01

Advantages of Involute Splines as Compared to Straight Sided Splines

Since the design of involute splines and their manufacture requires considerable knowledge, not only of the basic properties of the involute profile, but also of various other elements which affect the spline fit and the sometimes complex principles underlying manufacturing and checking equipment, the question is frequently raised as to why the involute profile is given preference in designing splines over the seemingly simpler straight sided tooth profile.
TECHNICAL ARTICLES | 1985-03-01

Involute Spline Size Inspection

This article describes a new technique for the size determination of external Involute splines by using a span measuring method. It provides application performance information demonstrating how this method and its measurements correlate with the traditional spline ring gage sizing method.
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