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Gear Technology

October 2013

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Opportunity Knocked

October 1, 2013
Michael Goldstein
For anyone involved in gear manufacturing, Gear Expo is an absolute treasure. In 2013, it was bigger and more varied than it's been in a decade. With 226 exhibitors covering every conceivable gear-related technology, Gear Expo offered visitors unparalleled opportunities to interview potential new suppliers.
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Feature Articles

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The Art of Versatility - Grinding at Gear Expo and EMO

October 1, 2013
Matthew Jaster
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.
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Untraditional Gear Machining

October 1, 2013
Look beyond the obvious, and you may well find a better way to machine a part, and serve your customer better. That’s the lesson illustrated in a gear machining application at Allied Specialty Precision Inc. (ASPI), located in Mishawaka, Indiana.
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The Halls of Ivy Tech Are Humming with Precision Tooling

October 1, 2013
If you've been following this space with any regularity, you know that grassroots efforts among industry and academia are springing up around the country to help win the hearts, minds and talents of young people in nudging them towards a career in manufacturing. Add another partnership to the list.
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Technical Articles

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Gear Standards and ISO GPS

October 1, 2013
In today’s globalized manufacturing, all industrial products having dimensional constraints must undergo conformity specifications assessments on a regular basis. Consequently, (standardization) associated with GD&T (geometrical dimensioning and tolerancing) should be un-ambiguous and based on common, accepted rules. Of course gears - and their mechanical assemblies - are special items, widely present in industrial applications where energy conversion and power transmission are involved.
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Minimal Tooth Number of Flexspline in Harmonic Gear Drive with External Wave Generator

October 1, 2013
Wave generators are located inside of flexsplines in most harmonic gear drive devices. Because the teeth on the wheel rim of the flexspline are distributed radially, there is a bigger stress concentration on the tooth root of the flexspline meshing with a circular spline, where a fatigue fracture is more likely to occur under the alternating force exerted by the wave generator. The authors' solution to this problem is to place the wave generator outside of the flexspline, which is a scheme named harmonic gear drive (HGD) with external wave generator (EWG).
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Purchasing Gear Lubricants - Be Careful When Playing the Numbers Game

October 1, 2013
When it comes to purchasing gear lubricants, many people on both the sales and purchasing side decide to play the numbers game. The person with the most numbers, or the biggest numbers, or the lowest numbers, must have the best product - right? Wrong; gear oil selection is not a game, and numbers alone cannot determine the right product for an application.
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Addendum

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The Ever-Evolving Apple Parer

October 1, 2013
Mike Viney's curiosity about the evolving designs of apple parers began after reading the article, "There's a Fascination in Apple Parers" by Marion Levy, which appeared in the second edition of Linda Campbell's 300 Years of Kitchen Collectibles.
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Voices

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Product News

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Product News

October 1, 2013
The complete Product News section from the October 2013 issue of Gear Technology.
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Events

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Calendar

October 1, 2013
The complete Calendar from the October 2013 issue of Gear Technology.
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Industry News

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Industry News

October 1, 2013
The complete Industry News section from the October 2013 issue of Gear Technology.
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GT Extras

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GT Extras

October 1, 2013
This month's online features include ITAMCO's app for MTConnect and Google Glass.
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Ask the Expert

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Worm Gears - Ask the Expert

October 1, 2013
How does one determine the center of a worm and a worm wheel? Also, what are the differences between the common worm tooth forms?
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