Undercut punch to control ironing

Details Undercut punch to control ironing Undercut punch to control ironing

1982-12-29

1985-08-13

Bray, W. D.

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

220 70, B21D 2221

Patent

active

045342016

ABSTRACT:
A method and tool for drawing and ironing and bottom profiling a container in a single process operation is disclosed wherein the ironing does not take place during the bottom profiling operation and the precoating of the container side wall is not damaged during removal of the punch because of a specifically configured undercut portion of the punch wall.

REFERENCES:
patent: 3760751 (1973-09-01), Dunn et al.
patent: 3785311 (1974-01-01), Yoshikawa
patent: 3998174 (1976-12-01), Saunders
patent: 4403493 (1983-09-01), Atkinson

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