Shell press and method of manufacturing a shell

Details Shell press and method of manufacturing a shell Shell press and method of manufacturing a shell

2006-12-05

2006-12-05

Larson, Lowell A. (Department: 3725)

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

C072S379400

Reexamination Certificate

active

07143623

ABSTRACT:
An apparatus and method for forming a shell with a central panel connected to a chuckwall with a z-fold located between the central panel and the chuckwall is provided. The apparatus and method of the invention is characterized by forming the z-fold in a downstroke of the press and supporting the z-fold in an upstroke of the press. The apparatus and method take place in a triple action die contained within a shell press. The apparatus and method can also be employed in a single action press or a double action press.

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