Metal deforming – By application of fluent medium – or energy field – With actuated tool engaging work
Patent
1979-11-29
1982-02-09
Gilden, Leon
Metal deforming
By application of fluent medium, or energy field
With actuated tool engaging work
72347, 72379, B21D 3908
Patent
active
043144683
ABSTRACT:
The present invention provides an improved method for hydro-mechanical stamping wherein hollow products are formed from flat blanks by the cooperation of a punch and a liquid female tool. The present method particularly provides for submerging in the liquid the blank which is to be stamped, the level of the liquid being also maintained above the usual stamping ring. The invention further provides apparatus which acts to center the blank relative to the stamping ring, the present apparatus comprising an additional ring rigidly connected to the stamping ring and having radial apertures therein which form portions of circuitous liquid paths through which liquid flows on stamping, the paths acting to prevent localized rupture during stamping. The present method and apparatus find particular application to the high-speed manufacture of hollow, thin-walled articles of non-cylindrical shape.
REFERENCES:
patent: 3020633 (1962-02-01), Huer
patent: 3383891 (1968-05-01), Gertz
patent: 3495433 (1970-02-01), Fuchs, Jr.
patent: 3516274 (1970-06-01), Graham et al.
patent: 3596485 (1971-08-01), Burk
patent: 3748887 (1973-07-01), Widera
patent: 3769824 (1973-11-01), Granzow
Baril Jacques
Gaborieau Jean-Yves
Gilden Leon
Societe de Vente de l' Aluminium Pechiney
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