Method and apparatus for trimming forgings

Details Method and apparatus for trimming forgings Method and apparatus for trimming forgings

B - Operations, Transporting

21

J

78/1

B21J 5/00 (2006.01)

Patent

CA 1209382

Abstract of the Disclosure A forging (A) is received in a split ring (B) which provides peripheral support to a forging peripheral wall (14) and an upper peripheral flange (16). The forging and the split ring are supported by a nest member assembly (C) as a trimming assembly (D) moves longitudinally to trim the forging flange and a forging bore (10). A punch (74) with a hardened cutting edge (80) moves axially through the forging bore and interacts with a nesting assembly cutting edge (60) to trim the bore. Concurrently, a trim die (90) having a cutting edge (96) interacts with a split die cutting edge (36) trimming the upper flange. The split ring restrains a central portion of the forging from puffing peripherally outward in response to the punch being urged therethrough. The interaction of the trim die and the split ring inhibits the upper part of the forging adjacent the upper flange from being drawn in toward the forging bore by the interaction between the punch and forging. In this manner, the forging bore and flange are trimmed concurrently and deformation of the forging is restrained. -17-

455189

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