Spur gear manufacturing process

Details Spur gear manufacturing process Spur gear manufacturing process

1987-06-18

1989-01-17

Echols, P. W.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

72356, B21D 5328

Patent

active

047979860

ABSTRACT:
The present invention discloses a manufacturing process whereby a spur gear is cold-press molded. By means of the invention a pre-punched workpiece is loaded on a counter which is admitted to a bore in a female die having a chamfer at its inlet, pressure is applied on the workpiece through the bore in the female die by means of a punch when pressure is increased from below so as to lift the counter from the counter plate, a primary product is formed by means of causing said workpiece to descend so as to transit the chamfer, extracting said primary product from the female die and reversing its orientation top to bottom, and repeating the identical process once again.

REFERENCES:
patent: 521178 (1894-06-01), Porter
patent: 2542912 (1951-02-01), Ensign
patent: 4050283 (1977-09-01), Schober
patent: 4111031 (1978-09-01), Vennemeyer et al.
patent: 4290292 (1981-09-01), Yoneda
patent: 4509353 (1985-04-01), Ike et al.

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