Metal deforming – By use of closed-die and coacting work-forcer – Forcing work into or within closed die; e.g. – forging
Patent
1979-03-16
1980-06-10
Husar, Francis S.
Metal deforming
By use of closed-die and coacting work-forcer
Forcing work into or within closed die; e.g., forging
72450, 7245304, 7245318, B21J 910
Patent
active
042066280
ABSTRACT:
A forging press having a mechanical mechanism for reciprocating the ram and wherein the tooling includes a fixed die sleeve, a punch carried by the ram, and a pad movable through the die sleeve in conjunction with a slug being formed. The pad is supported by a forge cylinder which is coupled to the ram by one or more load cylinders. The area of the piston of the forge cylinder is greater than the combined areas of the pistons of the load cylinders so that as the pad descends hydraulic fluid is pumped from the forge cylinder through the load cylinders at a rate greater than that which can be received so that the hydraulic fluid is compressed to a high pressure, and this pressure is effective as a forging pressure between the punch and the pad. The hydraulic system may include an accumulator for receiving excess hydraulic fluid after a preset pressure has been reached in the system. Various hydraulic systems are possible.
REFERENCES:
patent: 2417794 (1947-03-01), Werner
patent: 3108502 (1963-10-01), Chatfield
patent: 3138257 (1964-06-01), Andersen
patent: 3456478 (1969-07-01), Alexander
patent: 3861191 (1975-01-01), Sato
Brown Charles E.
Crosby Gene P.
Husar Francis S.
The Continental Group Inc.
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