Method and apparatus of forming one-piece core cap stamping with

Details Method and apparatus of forming one-piece core cap stamping with Method and apparatus of forming one-piece core cap stamping with

1992-03-23

1993-12-21

Jones, David

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

72349, 72708, 413 8, 413 12, 220356, B21D 2224, B21D 2226

Patent

active

052712583

ABSTRACT:
A core cap is formed from a one-piece sheet metal blank in which an inner cylindrical sleeve is formed and a reverse-fold outer sleeve determining a bight therebetween, and a recess is gradually formed by stamping in the bight and the inner sleeve so as to provide a keyway with parallel side walls symmetrically parallel with the axis of the inner sleeve.

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