Gear and method and device for manufacturing the gear

Details Gear and method and device for manufacturing the gear Gear and method and device for manufacturing the gear

2005-03-14

2008-03-04

Banks, Derris H. (Department: 3725)

Metal deforming

By use of closed-die and coacting work-forcer

Forcing work into or within closed die; e.g., forging

C072S356000, C029S893340

Reexamination Certificate

active

07337647

ABSTRACT:
A method for manufacturing a gear, wherein the gear is formed on a forging process by a die having an inner peripheral surface. A plurality of top surfaces corresponding to a bottom surface of the gear and both projected side surfaces corresponding to tooth surfaces of the gear and sandwiching the top surface connect smoothly to each other. The tooth surfaces and the bottom surface of the formed gear connect to each other smoothly. The forging process is carried out as a hot forging process in which the gear is formed by a hot forging die, or the forging process is carried out as a cold forging process in which the gear is formed by a cold forging die.

REFERENCES:
patent: 3028662 (1962-04-01), Pessl et al.
patent: 3258834 (1966-07-01), Rork
patent: 4111031 (1978-09-01), Vennemeyer et al.
patent: 5295382 (1994-03-01), Fuhrman
patent: 6279366 (2001-08-01), Sakaguchi
patent: 6343497 (2002-02-01), Hasegawa
patent: 1 524 043 (2005-04-01), None
patent: 2 763 267 (1998-11-01), None

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