March/April 2017

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Feature Articles

Message Received
Big Data Expands Process Capabilities for Multi-Axis Machining.

5-Axis Gear Manufacturing Gets Practical
Exciting new machine, cutting tool and software technologies are compelling many manufacturers to take a fresh look at producing their larger gears on machining centers. They're faster than ever, more flexible, easy to operate, highly affordable - and for any type of gear.

Shifting Fortunes
Amidst the energy industry's uncertain future, gearbox manufacturers are focusing on supplying the aftermarket.

Heat Treating 4.0
Suppliers are working hard to make sure their heat treating equipment is controllable, repeatable and efficient, and manufacturers continue to incorporate technology that gives heat treaters and their customers more information about what's going on inside the magic box.

It Doesn't Matter How Efficient Your Plant Is
To ensure profitability and avoid losses, accurately quoting jobs is the first line of defense.

Technical Articles

Performance of Gears Manufactured by 5-Axis Milling
Free form milling of gears becomes more and more important as a flexible machining process for gears. Reasons for that are high degrees of freedom as the usage of universal tool geometry and machine tools is possible. This allows flexible machining of various gear types and sizes with one manufacturing system. This paper deals with manufacturing, quality and performance of gears made by free form milling. The focus is set on specific process properties of the parts. The potential of free form milling is investigated in cutting tests of a common standard gear. The component properties are analyzed and flank load-carrying capacity of the gears is derived by running trials on back-to-back test benches. Hereby the characteristics of gears made by free form milling and capability in comparison with conventionally manufactured gears will be shown.

Analysis and Optimization of Contact Ratio of Asymmetric Gears
This article presents an analysis of asymmetric tooth gears considering the effective contact ratio that is also affected by bending and contact tooth deflections. The goal is to find an optimal solution for high performance gear drives, which would combine high load capacity and efficiency, as well as low transmission error (which affects gear noise and vibration).

Departments

Transferring Tribal Knowledge (Publishers Page)
How do we educate the next generation of gear industry employees, and how do we train the ones we already have?

Product News (Product News)
The latest in machine tools, cutting tools, inspection equipment, shop floor gages and other products for the gear industry.

Universal Hobs (Ask the Expert)
Another expert takes a crack at a previously answered question about double-helical gears and universal hobs.

Calendar (Events)
AGMA training classes, trade shows, technical conferences and more.

Industry News (Industry News)
Educational initiatives, company news, acquisitions and people in the industry are all featured this issue.

Vive la Differential (Addendum)
Your automobile's differential is easily one of its most important components. This becomes crystal clear to anyone that has ever had to pony up to replace one. The differential, that mathy-driven, mechanically complex system that keeps axles and pinions running smoothly was invented by a watchmaker - for a watch.