September/October 2020

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Feature Articles

Best Practices to Improve Results in Gear Deburring
All cutting and machining operations produce some type of burr or leave sharp edges on metal components. These unwanted byproducts are especially troublesome when producing precision components such as gears. The burrs can loosen from the gear - either during assembly or later when the gear is in operation - and damage components or lead to critical part failure.

That Industry 4.0 Digital Factory Thing, Part 2
Welcome to the second installment of an article which is presented as a guide for navigating the topic of the Industry 4.0 Digital Factory.

Technical Articles

History of the AGMA J-FACTOR
I felt a tap on my shoulder. Turning, I saw the chief draftsman who said, "You're in charge of gears." And he walked away. Dumbfounded, I stared at the back of his head, and sat down at my drafting board. It was November, 1963, shortly after JFK was assassinated, and after I was discharged from the U.S. Army.

Introduction to Electric Vehicle Transmissions
The first chapter from a new book by Dr. Hermann J. Stadtfeld provides an overview of the need for new technologies and approaches when it comes to developing transmissions for electric vehicles.

Spiral-Bevel Gear Noise: An Approach to Solving In-Field Issues
Gear noise is a common evil any gear manufacturer must live with. It is often low enough not to be a major problem but, at times, gear whining may appear and then, tracking the source and, especially, curing the ill can be tricky at best.

Sizing of Profile Modifications for Asymmetric Gears
Lately, the use of asymmetric gears in automotive and other applications is an upcoming trend, though few applications are known to have asymmetric teeth. However, an increased interest in asymmetric gears can be seen. Many companies have started to design and test such applications.

Departments

Keeping In Touch - From a Distance (Publishers Page)
I've been tuning in to a lot of information in new ways, lately. Chances are, you have, too. The pandemic has restructured all of our lives in ways we couldn’t have imagined just a year ago. From work to school to family, video chat and teleconference have replaced warm hugs and handshakes. There's no kibitzing around the water cooler.

All In for 2021 (Voices)
As Knute Rockne once said, "When the going gets tough, the tough get going." And so it is with AGMA members.

Product News (Product News)
The complete Product News section from the September/October 2020 issue of Gear Technology.

Industry News (Industry News)
The complete Industry News section from the September/October 2020 issue of Gear Technology.

Before the Bookmobile, there was the Bookwheel (Addendum)
Agostino Ramelli was a 16th-century Italian military engineer of some note who designed many machines and other contributions used in the go-go Renaissance period, including cranes, grain mills, and water pumps. But his most compelling apparatus was a real mindbender - a revolving wooden wheel with angled shelves that allowed users to read multiple books at one time.