Metal deforming – By use of closed-die and coacting work-forcer – Cup or shell drawing
Patent
1982-09-02
1984-09-11
Gilden, Leon
Metal deforming
By use of closed-die and coacting work-forcer
Cup or shell drawing
72 57, 72350, 7245302, B21D 2200
Patent
active
044702876
ABSTRACT:
A press for manufacturing hollow articles by deep drawing comprising a high pressure vessel (1) accommodating a die (3) with a punch (4). A blank (14) is accommodated in an annular high pressure chamber (16) communicating with a high pressure chamber (19) of an intensifier (20). The press also comprises a device (27) for regulating pressure in the annular chamber to control pressure acting upon the peripheral portion of a blank in accordance with a preset law, an appliance (39) for setting pressure in the annular chamber is made in the form of a tracer whose profile is equidistant with the curve characterizing the alteration of pressure in the annular chamber (16).
REFERENCES:
patent: 3452566 (1969-07-01), Arche
patent: 3495433 (1970-02-01), Fuchs, Jr.
Antonov Evgeny A.
Leonov Boris N.
Matveev Anatoly S.
Nikonov Nikolai I.
Prokofiev Vyacheslav I.
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