Die assembly having means for automatically controlling in the a

Details Die assembly having means for automatically controlling in the a Die assembly having means for automatically controlling in the a

1993-05-18

1994-11-22

Jones, David

Metal deforming

By relatively movable offset tool-faces

With tool motion in fixed path

72389, 72396, B21D 501

Patent

active

053657667

ABSTRACT:
A die assembly for use with a tool for bending flat metal stock, and including a pair of elongated plate members in the lower die member each having a surface to support a piece of flat metal stock, the plate members being pivotably connected and maintained approximately 180 degrees apart when a bending force is not applied to the metal stock. A surface of an expandable pressure container is positioned in contact with a plate support member, the pressure within the container being controlled in a manner such that the vertical position of the plate support member is fixed such that the plate members assume a selected angular orientation to enable the tool to form the desired bend in the metal stock.

REFERENCES:
patent: 2882952 (1959-04-01), Johnson
patent: 2916073 (1959-12-01), Johnson
patent: 3306093 (1967-02-01), Sassak
patent: 5060501 (1991-10-01), Heath

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