Method of making powder metal helical gears

Details Method of making powder metal helical gears Method of making powder metal helical gears

1994-01-21

1997-08-26

Echols, P. W.

Metal working

Method of mechanical manufacture

Gear making

72 98, B21D 5328, B21B 1912

Patent

active

056599552

ABSTRACT:
A method includes the steps of compacting powder metal to form a powder metal blank, and forming gear teeth on the powder metal blank by rolling the powder metal blank between rolling dies rotating about parallel axes. The step of forming gear teeth on the powder metal blank by rolling includes the steps of rotating the rolling dies about parallel axes and maintaining the distance between the parallel axes constant during forming of the gear teeth on the powder metal blank. Powder metal gears having 45.degree. helical gear teeth are cold rolled. Herringbone gears and pinion gears are made with the 45.degree. helical powder metal gears.

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