Plastic molding process for metal

Details Plastic molding process for metal Plastic molding process for metal

1975-10-20

1977-08-02

Weidenfeld, Gil

Metal deforming

By use of closed-die and coacting work-forcer

Forcing work into or within closed die; e.g., forging

72377, B21D 2226

Patent

active

040388603

ABSTRACT:
A plastic molding process for metal disclosed comprises the steps of: placing a blank within a first female die in contact with the teeth thereof, said female teeth being adaped to define the outer peripheral configuration of said blank, and said blank being supported on top of the female teeth of a second female die placed under said first female die; and then pressing the male teeth of a male die into said blank in a manner that the difference between the radius of a die cushion and the radius (l) of the male die as measured from the center of the male die to the bottom of a tooth groove thereof is equal to or larger than the plastic deformation .delta. of the blank in the radial direction, whereby the blank is molded into a desired shape, without exerting a force on the bottom or the male teeth groove.

REFERENCES:
patent: 1534299 (1925-04-01), Connery
patent: 3298219 (1967-01-01), Schober
patent: 3599469 (1971-08-01), Bassoff
patent: 3608350 (1971-09-01), Yamaguchi

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