Variable case depth powder metal gear and method thereof

Details Variable case depth powder metal gear and method thereof Variable case depth powder metal gear and method thereof

2006-03-24

2010-11-09

Bryant, David P (Department: 3726)

Metal working

Method of mechanical manufacture

Gear making

C029S893000, C029S893340, C074S459500

Reexamination Certificate

active

07827692

ABSTRACT:
A gear and a method of making a forged powder metal gear having a plurality of teeth and a variable case depth profile forged in the plurality of teeth. Each tooth of the plurality of teeth has a first surface and a tooth root. A variable case depth profile is formed in each tooth of the plurality of teeth, whereby the variable case depth profile exhibits greater tooth wear resistance on the first surface and greater impact resistance in the tooth root.

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Seki M. et al., Surface Fatigue Failure and Strength of Case-Hardened Powder-Forged Rollers and Gears, VDI Berichte Duesseldorf, DE, No. 1904, 2005, pp. 1773-1779.

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