What "Ease-Off" shows about Bevel and Hypoid Gears - September/October 2001

The article "What "Ease-Off" shows about Bevel and Hypoid Gears" appeared in the September/October 2001 issue of Gear Technology.

Summary
The configuration of flank corrections on bevel gears is subject to relatively narrow restrictions. As far as the gear set is concerned, the requirement is for the greatest possible contact zone to minimize flank compression. However, sufficient reserves in tooth depth and longitudinal direction for tooth contact displacement should be present. From the machine - and particularly from the tool - point of view, there are restrictions as to the type and magnitude of crowning that can be realized. Crowning is a circular correction. Different kinds of crowning are distinguished by their direction. Length crowning, for example, is a circular (or 2nd order) material removal, starting at a reference point and extending in tooth length or face width.

Keywords
Gear Design, Bevel Gears, Pocessing, Flank Correction, Crown, Crowning, Back to Basics, Basics

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