Gear root is an important but often neglected element of thegear. The stress concentration point typically lies in the tooth toroot transition area and it is this point that determines the lifeor the fatigue life of a gear in many applications. Specificstandards are in place on design of the involute part of a geartooth, the root area however is less standardized. Newmanufacturing methods enable the designer of gears greater latitudein the design of strong alternative root forms. The standards ondesign and specification for the root geometry are lax so theseroot forms fit into current standards.
This paper reviews the designs of various root forms for thegears. It compares the various root forms on basis of theirstrength, fatigue resistance and other parameters. This analysiswill be based on compilation of various research previouslyconducted on gear root forms.
The paper also discusses current manufacturing methods toproduce the roots, and recently introduced alternatives. It willcompare the traditional methods with new methods of gearmanufacturing it terms of types of roots produced and overallcontrol over the root profile.
- Edition:
- 13
- Published:
- 09/01/2013
- Number of Pages:
- 9
- File Size:
- 1 file , 150 KB
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