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Home » Publications » Gear Technology

Our Publications

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Gear Technology

November/December 2009

Read the complete issue (.pdf)
  • Publishers Page
  • Feature Articles
  • Technical Articles
  • Addendum
  • Voices
  • Product News
  • Events
  • Industry News

Publishers Page

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Fallen Leaves

November 1, 2009
Michael Goldstein
Publisher Michael Goldstein reflects on the recent passing of several gear industry friends and associates.
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Feature Articles

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American Manufacturing - Can It Be Saved

November 1, 2009
If anyone should ever need convincing that the state of American manufacturing is in ongoing decline, consider this: the state of Michigan has the highest concentration of engineers in the country, yet also has the highest unemployment rate. But there are ripples of hope out there as grassroots and otherwise organized groups are fighting the good fight in an attempt to reverse that trend.
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State of the Gear Industry 2009

November 1, 2009
In October, Gear Technology conducted an anonymous survey of gear manufacturers. Invitations were sent by e-mail to thousands of individuals around the world. More than 300 individuals responded to the online survey, answering questions about their manufacturing operations and current challenges facing their businesses.
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Technical Articles

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Hypoloid Gear with Small Shaft Angles and Zero-to-Large Offsets

November 1, 2009
Beveloid gears are used to accommodate a small shaft angle. The manufacturing technology used for beveloid gearing is a special setup of cylindrical gear cutting and grinding machines. A new development, the so-called Hypoloid gearing, addresses the desire of gear manufacturers for more freedoms. Hypoloid gear sets can realize shaft angles between zero and 20° and at the same time, allow a second shaft angle (or an offset) in space that provides the freedom to connect two points in space.
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Bending Fatigue Tests of Helicopter Case Carburized Gears: Influence on Material, Design and Manufacturing Parameters

November 1, 2009
A single tooth bending (STB) test procedure has been developed to optimally map gear design parameters. Also, a test program on case-carburized, aerospace standard gears has been conceived and performed in order to appreciate the influence of various technological parameters on fatigue resistance and to draw the curve shape up to the gigacycle region.
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The Effect of Flexible Components on the Durability, Whine, Rattle and Efficiency of an Automotive Transaxle Geartrain System

November 1, 2009
Gear engineers have long recognized the importance of considering system factors when analyzing a single pair of gears in mesh. These factors include important considerations such as load sharing in multi-mesh geartrains and bearing clearances, in addition to the effects of flexible components such as housings, gear blanks, shafts and carriers for planetary geartrains. However, in recent years, transmission systems have become increasingly complex—with higher numbers of gears and components—while the quality requirements and expectations in terms of durability, gear whine, rattle and efficiency have increased accordingly.
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Addendum

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Reassembling Gear Drive History

November 1, 2009
Getting rid of personal mementos is an arduous housekeeping ritual for some of us; every last gear has a memory. One man’s trash is another man’s gold, after all, or in some cases, one failed business is a forgotten piece of personal and mechanical genealogy. Such is the case of the Hill-Climber chainless bicycle, the remains of which were pulled from a family junk pile after nearly half a century.
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Voices

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Green Heat Treating - No Sweat

November 1, 2009
Bob McCulley of Comprehensive Heat Treat Specialists describes how even the most energy intensive industrial processes can be made "green."
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Product News

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Gleason Cutter Head Improves Tool Life and Productivity

November 1, 2009
The Pentac Plus is the latest generation of Gleason’s Pentac bevel gear cutting system. It is designed to allow much higher tool life and improved productivity, especially for cutters using multiple face blade geometry.
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Product News

November 1, 2009
The complete Product News section from the November/December 2009 issue of Gear Technology.
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Cutting Gears on a Machining Center

November 1, 2009
Depo provides all-in-one machining capabilities for the gear industry.
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Robotic Gear Deburring System Automates Chamfering

November 1, 2009
Compass Automation unveiled its Robotic Deburring System at Gear Expo 2009.
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Events

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Gear Expo 2009 Recap

November 1, 2009
Is economic relief on the way? This was the general consensus coming out of Indianapolis after Gear Expo 2009 closed its doors in September. Though the numbers were slightly down—2,539 exhibitors and attendees compared to 2,992 in 2007—it appeared to be steady as she goes at the gear industry’s biennial main event, good news considering the state of the gear industry since Gear Expo 2007 in Detroit.
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Technical Calendar

November 1, 2009
The complete technical calendar from the November/December issue of Gear Technology.
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Industry News

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Industry News

November 1, 2009
The complete Industry News section from the November/December 2009 issue of Gear Technology.
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