Metal deforming – With cutting – By shearing tool-couple
Patent
1975-08-05
1976-07-13
Gilden, Leon
Metal deforming
With cutting
By shearing tool-couple
291484R, 83621, B21D 2806, B21D 4504
Patent
active
039686744
ABSTRACT:
An elongated continuous steel round bar is cut to a specified length, and the cut piece is pressed by forging machine to form a workpiece including an annular portion and a smaller annular portion concentrically integrally projecting therefrom. An outer ring and an inner ring are simultaneously produced from the workpiece by an apparatus comprising an inner ring die and an outer ring die mounted on a stationary base, and an inner ring punch and outer ring punch opposing the dies and mounted on a movable ram. The inner and outer ring punches simultaneously punch out the inner and outer rings from the workpiece fitted to the inner and outer dies. In relation to this operation, a cam operates to depress a rolling member disposed in the rear of hollow portion of the inner ring die, whereby the foremost of like finished inner rings each pushed into the hollow portion of the inner ring die at every stroke of the ram is allowed to drop through the die assembly and is thereby automatically withdrawn.
REFERENCES:
patent: 2880495 (1959-04-01), Strickland
patent: 2913811 (1959-11-01), Benson
patent: 3378903 (1968-04-01), Cadillo
patent: 3496619 (1970-02-01), Constant
Gilden Leon
Sakamura Machine Co., Ltd.
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