Metal deforming – By use of closed-die and coacting work-forcer – Forcing work into or within closed die; e.g. – forging
Patent
1975-09-12
1976-12-28
Mehr, MIlton S.
Metal deforming
By use of closed-die and coacting work-forcer
Forcing work into or within closed die; e.g., forging
B21J 902
Patent
active
039994171
ABSTRACT:
A setup for use in a press for cold-forming metal parts, such as tripods of universal joints having a central body and radially projecting portions, from a cylindrical billet. A first setup is provided for forming an intermediate workpiece which may then be finished in a second setup. In the first setup the die sectors which make up the die are mounted on rams which are slidably mounted on slotted members between a spaced apart position when the press piston is in its raised position and a clamped together position by means of a toggle mechanism. Punches are provided on the table and the piston which compress the starting billet thereby extruding the metal into channels in each of the die sectors. In the second setup upper and lower die halves are carried respectively by the piston and the table of the press. The die halves have channels adapted to receive the various portions of an intermediate workpiece. Vertical and horizontal punches are provided for finishing various recesses and surfaces of the intermediate workpiece. The die halves are clamped together without working force of the press which may reach 100-200 metric tons.
REFERENCES:
patent: 2787828 (1957-04-01), Cousino
patent: 2978932 (1961-04-01), Frueauff, Jr.
patent: 3355930 (1967-12-01), Fedorov
patent: 3455140 (1969-07-01), Galan et al.
patent: 3583198 (1971-06-01), Drallmeier
Glaenzer Spicer
Mehr Milton S.
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