Knockout pin apparatus

Details Knockout pin apparatus Knockout pin apparatus

1988-06-21

1989-12-19

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

With stripping or ejecting from tool

72427, B21J 1314

Patent

active

048874485

ABSTRACT:
An improved spring-biased knockout pin apparatus for use in an impact extrusion press provides for initial pin position adjustment and subsequent spring preload adjustment without affecting the preset pin position. Methods are included.

REFERENCES:
patent: 175653 (1876-04-01), Bliss
patent: 2585047 (1952-02-01), Scibelli

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