Complex pressing die apparatus

Details Complex pressing die apparatus Complex pressing die apparatus

1987-07-02

1988-10-25

Bray, W. Donald

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

72350, B21D 2228

Patent

active

047794437

ABSTRACT:
A complex pressing die apparatus having a plurality of upper and lower dies which are actuated by respective hydraulic cylinder devices which are located in a coaxial arrangement, respectively, in accordance with a predetermined sequence.

REFERENCES:
patent: 4248076 (1981-02-01), Bulso, Jr. et al.
patent: 4309888 (1982-01-01), Miller et al.
patent: 4499750 (1985-02-01), Gerber et al.
patent: 4589270 (1986-05-01), Lee, Jr. et al.
patent: 4620434 (1986-11-01), Pulciano et al.

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