Method of extruding parts with captured fixture

Details Method of extruding parts with captured fixture Method of extruding parts with captured fixture

1981-10-01

1983-12-27

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Electrical device making

292835, 29520, 411107, 411121, 403282, 429178, 72358, H01R 4300

Patent

active

044222360

ABSTRACT:
An improved apparatus and a method are disclosed for extruding an improved type of small part of the type having a body portion (12) of extrudable material and a fixture (18, 20; 54, 56) of harder material captured at the surface of the body. A female die element (22, 24) is provided with a bore (26) which extends into a downwardly opening cavity (28) having a geometry corresponding to the desired geometry of the body portion of the part. A male die member (36) is positioned within the bore and includes at its lower end a threaded socket (50) or protrusion (52) for holding the fixture of harder material during extrusion. Thus, when a billet of extrudable material (48) is placed in the cavity and the male die member is moved downward, the material extrudes around a portion of the fixture held at the lower end of the male die element.

REFERENCES:
patent: 1213878 (1917-01-01), Jacocks
patent: 1410093 (1922-03-01), Dallmeyer et al.
patent: 2932290 (1960-04-01), Christensen
patent: 2955222 (1960-10-01), Beesch
patent: 3197857 (1965-08-01), Nippert
patent: 3345736 (1967-10-01), Jakeway
patent: 3583198 (1971-06-01), Drallmeier
patent: 3699636 (1972-10-01), Walker
patent: 3731516 (1973-05-01), Dohmann
patent: 3750442 (1973-08-01), Cogan
patent: 3820579 (1974-06-01), Barry
patent: 4166373 (1979-09-01), Braun
patent: 4177665 (1979-12-01), Schurmann

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