Method of manufacturing outside ring

Details Method of manufacturing outside ring Method of manufacturing outside ring

1991-04-08

1992-06-30

Crane, Daniel C.

Metal deforming

With cutting

Machining after final metal-deforming

72336, 723421, 72359, 723546, 2989334, B21D 2800, B21D 5388

Patent

active

051252562

ABSTRACT:
An outside ring manufacturing method comprises a first step of blanking out from a metal sheet a blank with a circular body portion and tongue portions which protrude at several places from the outer peripheral edge of this body portion, a second step of press forming the blank so that the body portion is formed into a tapered cylinder portion which tapers off or decreases in diameter with the distance away from the tongue portions and so that the tongue portions are made parallel to an axis of the tapered cylinder portion, a third step of adjusting the geometry of each part to a predetermined geometry through the machining of an end surface of the tapered cylinder portion and the tongue portions, and a fourth step of heat treatment to achieve a desired hardness.

REFERENCES:
patent: 140920 (1873-07-01), Herzberg
patent: 520194 (1894-05-01), Thomson
patent: 968789 (1910-08-01), Olb
patent: 1847926 (1932-03-01), Chase
patent: 2014605 (1935-09-01), Zimmerman
patent: 4770283 (1988-09-01), Putz
patent: 4798077 (1989-01-01), Douglas

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