Method and apparatus for cold forming metal articles having irre

Details Method and apparatus for cold forming metal articles having irre Method and apparatus for cold forming metal articles having irre

1980-12-16

1983-01-11

Gilden, Leon

Metal deforming

By use of closed-die and coacting work-forcer

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

72399, 72402, B21D 2200

Patent

active

043676430

ABSTRACT:
A method and apparatus are provided for cold forming a metal article having varying lateral cross-sections. A hydraulically operated, longitudinally movable force applying member is adapted to apply force to a slug during formation. A die cavity is defined by a frame defining a central bore and a plurality of channels extending radially from the central bore. The central bore is coaxial with the force applying member. A plurality of die nibs, each having a first end and a second end with the first end being mounted in the central bore, are mounted in the channels. At least one of the nibs being slidably mounted within one of the channels. The second end of the slidable member is inclined and engaged by a cam bar secured to the force applying member. The sliding nib is urged toward the central bore to enclose the die cavity as the force applying member is moved to a force applying position.

REFERENCES:
patent: 3135139 (1964-06-01), Kralowetz
patent: 3194200 (1965-07-01), Brogren
patent: 3263478 (1966-08-01), Brauer
patent: 3335598 (1967-08-01), Jessen
patent: 3538735 (1970-11-01), Zimmerman
patent: 3566664 (1971-03-01), Schweizer
patent: 3568494 (1971-03-01), Geisman

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