Methods and apparatuses for producing complex-shaped metal parts

Details Methods and apparatuses for producing complex-shaped metal parts Methods and apparatuses for producing complex-shaped metal parts

1999-02-26

2000-11-28

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

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

72377, B21J 1302

Patent

active

061519480

ABSTRACT:
Methods and apparatuses for near net warm forging relatively small, complex shaped parts, such as automotive rocker arms, is disclosed. Die and punches are provided, which collectively have surfaces corresponding to the surfaces of the as-forged parts. Centralized workpieces, e.g., a transverse cylinders having a length-to-diameter ratio of approximately 1:1, are placed in cavities of the dies, and the punches are cycled through forging strokes to form the as-forged parts. The as-forged parts may have draft angles of 0-2.degree. and surface-to-surface transitions with radii of less than or equal to about 1mm, and may also have substantially parallel side surfaces.

REFERENCES:
patent: 2814101 (1957-11-01), Prough et al.
patent: 3691804 (1972-09-01), Clendenin et al.
patent: 4222260 (1980-09-01), McDermott
patent: 4377085 (1983-03-01), McDermott et al.
patent: 4426872 (1984-01-01), Gatny
"Summit racing Equipment" Catalog, Feb. 1998, pp. 43-45.
"Jeg's" Catalog, vol. K, Feb. 1998, p. 67-K.

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