July 2019

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Feature Articles

Measurement Management
The secret to meeting today's inspection demands is influenced by the technology and those in charge of operating it.

Heat-Treat Trends
The U.S. heat treat industry is in the middle of a labor shortage. Here's a look at what companies in the industry are doing about it.

The Measure of a Gear
Plastic gears still have an entire frontier to explore, and how they measure up against their steel cousins is a question still being investigated.

Chamfering: Hard vs Soft Parts and Before vs After Heat Treating
The author conducts a simple experiment to verify his anecdotal knowledge about chamfering hard vs soft parts.

Gear Noise Analysis: Design and Manufacturing Challenges Drive New Solutions for Noise Reduction
Gear noise is among the issues of greatest concern in today's modern gearboxes. Significant research has resulted in the application of enhancements in all phases of gear manufacturing, and the work is ongoing. With the introduction of Electric Vehicles (EV), research and development in this area has surged in recent years. Most importantly, powerful new noise analysis solutions are fast becoming available.

Technical Articles

Fully Automated Roughness Measurement on Gears — Even on the Shop Floor
Klingelnberg presents the technical aspects of its roughness measurement system.

Practical Gear Engineering: Answers to Common Gear Manufacturing Questions
New book from Gleason's Vice President Bevel Gear Technology will be exclusively excerpted in Gear Technology magazine.

Bevel Gear Blank Drawing Procedure
With this first installment we begin a series of randomly excerpted chapters from Dr. Hermann J. Stadtfeld's new book — Practical Gear Engineering.

Experimental and Numerical Study of a Loaded Cylindrical Glass Fiber-Reinforced PA6 Gear
Polymer gears find increasing applications in the automotive industry, office machines, food machinery, and home appliances. The main reason for this success is their low cost. Their low weight, quietness of operation, and meshing without lubricant are also interesting. However, they have poor heat resistance and are limited to rotational transmission. In order to improve the gears' behavior, glass fiber is added


Knowledge is the Best Insurance (Voices)
If you were offered an opportunity to spend quality time with leading experts in your field, where in-depth discussions and dialogues occurred on subjects that directly impacted your business, would you do it?

Product News (Product News)
The complete Product News section from the July 2019 issue of Gear Technology.

Tooth Thickness Tolerance and AGMA 2002-C16 (Ask the Expert)
A reader asks: We are currently revising our gear standards and tolerances and a few questions with the new standard AGMA 2002-C16 have risen. Firstly, the way to calculate the tooth thickness tolerance seems to need a "manufacturing profile shift coefficient" that isn't specified in the standard; neither is another standard referred to for this coefficient. This tolerance on tooth thickness is needed later to calculate the span width as well as the pin diameter. Furthermore, there seems to be no tolerancing on the major and minor diameters of a gear.

Calendar (Events)
The complete Technical Calendar from the July 2019 issue of Gear Technology.

Industry News (Industry News)
The complete Industry News section from the July 2019 issue of Gear Technology.

A Bar/Restaurant for Gearheads (Addendum)
It's called GearHouse Brewing Co. It's in Chambersburg, a small town in south-central Pennsylvania. And it's fit for a gearhead. The bar/restaurant is decorated inside and out with more than 15 gears and gear blanks.