Method of producing forged part and method of producing...

Details Method of producing forged part and method of producing... Method of producing forged part and method of producing...

2007-08-07

2007-08-07

Crane, Daniel C. (Department: 3725)

Metal deforming

With cutting

Machining after final metal-deforming

C072S377000

Reexamination Certificate

active

11176684

ABSTRACT:
A method of producing a forged part includes holding a material by a jig, upsetting the material, held by the jig, to a predetermined length by a pair of upsetting dies disposed on both ends of the material, while pressing the upsetting dies on the material, so as to produce large-diameter portions at the respective axial ends of the material. Next, a bending operation and a forging operation are made to the upset material, in that order. When forging, a direction, in which the material is forged, is set, so that a burr generated on the material by upsetting is included in a burr generated on the material by forging. Next, a finish-machining operation is made to the forged material to remove the burr left on the outer periphery of the material after forging. Thereafter, the finish-machined material is drilled to form bush-mounting holes in the large-diameter portions.

REFERENCES:
patent: 633886 (1899-09-01), McTighe
patent: 1862281 (1932-06-01), Schaefer
patent: 4710245 (1987-12-01), Roether
patent: 5060331 (1991-10-01), Shie
patent: 5115663 (1992-05-01), Ando et al.
patent: 33 45 280 (1985-06-01), None
patent: 59-88210 (1984-05-01), None
patent: 08-039183 (1996-02-01), None

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