Female dies and method of manufacture

Details Female dies and method of manufacture Female dies and method of manufacture

1980-04-16

1983-03-22

Crane, Daniel C.

Metal deforming

By use of closed-die and coacting work-forcer

Forcing work into or within closed die; e.g., forging

72478, 76107R, 291565A, 29416, B21D 3712, B21D 3714, B21K 500

Patent

active

043770851

ABSTRACT:
A segmented female die for use in a closed die set comprising a pair of similar center segments and a pair of similar "half moon" shaped outside segments. The four segments also define the ejector pin opening. The die segments are prevented from relative motion between themselves by interlocks comprising closely mating protrusions and guideways which, in cooperation with other means, produce a rigid female die. The interlocks permit the use of relatively simple manufacturing techniques such as grinding as opposed to more sophisticated techniques such as electrical discharge machining.

REFERENCES:
patent: 338502 (1886-03-01), Fitzgerald
patent: 353929 (1886-12-01), Fitzgerald
patent: 1430399 (1922-09-01), Parsons et al.
patent: 1982352 (1934-11-01), Richardson
patent: 2125068 (1938-07-01), Dempsey
patent: 2261304 (1941-11-01), Sparks
patent: 2278293 (1942-03-01), Watson
patent: 2526489 (1950-10-01), Liddicoat
patent: 3406555 (1968-10-01), Fuchs, Jr.
patent: 3815199 (1974-06-01), Malavazos
patent: 4222260 (1980-09-01), McDermott

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