Method and device for producing synchronizer ring

Details Method and device for producing synchronizer ring Method and device for producing synchronizer ring

1978-10-13

1981-11-10

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

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

72344, 72352, 72358, 291592, B21D 4502

Patent

active

042991129

ABSTRACT:
A planar blank material to be press-formed is confined in a space formed by punch means having peripheral flange part provided with gear teeth corresponding to those of the hollow product, a mandrel provided slidably in the central hole of said punch means and having outer diameter corresponding to the inner diameter of the hollow product, and a die means having bottom surface and through hole having inner contour corresponding to the outer contour of the boss part of the product. By the pressing action, the peripheral flange part having teeth of the product is formed and simultaneously boss part of the product is formed whereby the synchronizer ring product is formed by one step and the blank material corresponding to the through hole of the product and the product are both ejected out by returning the punch means, mandrel, and die means.

REFERENCES:
patent: 2726560 (1955-12-01), Roux
patent: 3048063 (1962-08-01), Chatfield
patent: 3149416 (1964-09-01), Moore
patent: 3370450 (1968-02-01), Scheucher
patent: 3535762 (1970-10-01), Taylor
patent: 3675459 (1972-07-01), Dohmann
patent: 3731516 (1973-05-01), Dohmann et al.
patent: 3832763 (1974-09-01), Schober
patent: 3842646 (1974-10-01), Kuhn
A.P.C. 191,168 Singer published Apr. 27, 1943.

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