Method of and apparatus for the fine cutting (punching) of artic

Details Method of and apparatus for the fine cutting (punching) of artic Method of and apparatus for the fine cutting (punching) of artic

1984-07-06

1986-05-06

Crane, Daniel C.

Metal deforming

With cutting

By composite tool

72329, 72338, 72344, 72352, 291592, B21D 2814

Patent

active

045863601

ABSTRACT:
Fine die stamping of workpieces from sheet metal is effected by clamping the workpiece between a die plate and guide plate, supporting the portion of the material to form the article by an ejector which is displaced along with the punch, and driving the supported portion of the material into a hole in the die plate having flanks tapered away from the guide plate and punch so that swaging occurs on the separated portion with or upon its separation from the balance of the workpiece material.

REFERENCES:
patent: 3731516 (1973-05-01), Dohmann et al.
patent: 4142396 (1979-03-01), Deveney et al.
patent: 4299112 (1981-11-01), Kondo et al.

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