Stamping and forming machine having interchangeable punch sub-as

Details Stamping and forming machine having interchangeable punch sub-as Stamping and forming machine having interchangeable punch sub-as

1990-01-18

1991-04-16

Larson, Lowell A.

Metal deforming

Tool and/or tool holder

Having unitary tool-face

83698, 83691, B21D 3704

Patent

active

050072820

ABSTRACT:
A punch assembly of a stamping and forming machine has a separate sub-assembly which is removably secured to the ram of the punch assembly. The sub-assembly comprises a punch holder, a stripper plate, and at least one punch. The stripper plate is coupled to the punch holder by a lost motion connection and the punch holder in turn is secured to the punch ram by fasteners. The fasteners are accessible through access openings which extend into the facial surface of the stripper plate. The practice of the invention permits the use of only one ram with a plurality of sub-assemblies and thereby reduces tooling costs.

REFERENCES:
patent: 4497196 (1985-02-01), Bakermans et al.
patent: 4733552 (1988-03-01), Lefils
patent: 4742746 (1988-05-01), Olsson
patent: 4819476 (1989-04-01), Bukermans et al.

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