Method for forming a ring with a chamfered section

Details Method for forming a ring with a chamfered section Method for forming a ring with a chamfered section

1998-12-11

2000-09-26

Bryant, David P.

Metal working

Method of mechanical manufacture

Obtaining plural product pieces from unitary workpiece

29423, 29DIG37, 72335, 72338, 72348, B23P 1700, B21D 2800

Patent

active

061228141

ABSTRACT:
A process for manufacturing a ring that has at least one cylindrical end section that ends in a chamfer is disclosed. The process entails providing a flat-shaped article which is formed of a material capable of being deep-drawn. The flat-shaped article is stamped to provide indentations which correspond to the chamfer in the finished product. The flat-shaped article is then punched out to form a preform. The preform is then deep drawn, converting the preform into the shape of the ring. In the step of deep drawing the preform, the indentations form a chamfered section on the ring.

REFERENCES:
patent: 181356 (1876-08-01), Milbank
patent: 438253 (1890-10-01), Lorenz
patent: 580845 (1897-04-01), Buxton
patent: 1460749 (1923-07-01), Dull
patent: 2150708 (1939-03-01), Andrews et al.
patent: 2289409 (1942-07-01), Connors
patent: 3050849 (1962-08-01), Etchison, Jr. et al.
patent: 4562628 (1986-01-01), Marneffe et al.

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