Multi-punch, multi-die assembly for stamping hook-shaped damper

Details Multi-punch, multi-die assembly for stamping hook-shaped damper Multi-punch, multi-die assembly for stamping hook-shaped damper

1978-01-31

1979-08-28

Larson, Lowell A.

Metal deforming

With cutting

By composite tool

72382, 72384, 72418, B21D 2814

Patent

active

041656296

ABSTRACT:
A novel punch and die assembly is disclosed wherein an intermediate punch-and-die member having an aperture defined therein floats between a punch member and a die member. Upon activation, the pucnh-and-die member remains stationary while the punch member deforms a workpiece portion into the aperture. As the deforming operation effected by the punch member is completed, the punch member seats on the punch-and-die member to clamp the workpiece therebetween, after which the biasing of the punch-and-die member into its stationary position is overcome and the punch member, punch-and-die member and workpiece move in unison towards the die member to complete the forming process.

REFERENCES:
patent: 1619227 (1927-03-01), Widell et al.
patent: 1904920 (1933-04-01), Hothersall
patent: 2308471 (1943-01-01), Schwartz
patent: 2712768 (1955-07-01), Winkler
patent: 3426571 (1969-02-11), Hoffman
patent: 3685336 (1972-08-01), Black, Jr.
patent: 3685847 (1972-08-01), Smolka et al.
patent: 3953999 (1976-05-01), Northey

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