Metal deforming – By use of closed-die and coacting work-forcer – Forcing work into or within closed die; e.g. – forging
Patent
1984-05-07
1986-08-26
Husar, Francis S.
Metal deforming
By use of closed-die and coacting work-forcer
Forcing work into or within closed die; e.g., forging
72359, B21D 2200
Patent
active
046075143
ABSTRACT:
A pill-shaped billet which is tapered in thickness toward an outer, relatively thin rim, extending circumferentially therearound, is cold formed into a metal part having an annular flange. Upper and lower die elements define cavities, and shoulders extending circumferentially therearound, and are positioned in a sleeve with the shoulders being directly opposed, thereby defining an annular space. The billet is placed between the upper and lower die elements in the sleeve with the rim of the billet in the annular space. The upper and lower die elements contact the billet only along the edges between their respective shoulders and cavities. When the upper and lower die elements are moved toward each other, the annular flange is formed by extruding radially outward the part of the billet between the shoulders, while simultaneously cold forming the billet into the first and second cavities.
REFERENCES:
patent: 3124876 (1964-03-01), Putetti
patent: 3434326 (1969-03-01), Serret
patent: 3675459 (1972-07-01), Dohmann
patent: 4177665 (1979-12-01), Schurmann
patent: 4377085 (1983-03-01), McDermott et al.
Husar Francis S.
Katz Steve
The Nippert Company
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