Rotary forging apparatus

Details Rotary forging apparatus Rotary forging apparatus

1994-11-09

1996-07-02

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

During rotation of work

72 82, B21D 500, B21D 2200, B21D 2214

Patent

active

055310885

ABSTRACT:
A rotary forging apparatus includes a first rotary ram (3a), a cylindrical second rotary ram (3b), a third rotary ram (3c) and a shaping roller device. The first ram (3a) and the cylindrical second ram (3b) face each other and rotate around the same axis. The third ram (3c) rotates around a slanting axis in the cylindrical second ram (3b). The third ram (3c) presses a workpiece against the first ram (3a) and makes a disc part of a product. The shaping roller, the second ram (3b) and a side of the first ram make the rim part. The outer surface of the second ram (3b) can keep tight contact with the workpiece during the forging because of the rotational symmetry of the second ram (3b). The overall contact stabilizes the position of the workpiece and reduces the size error of the product.

REFERENCES:
patent: 3823591 (1974-07-01), Schoder et al.
patent: 4982589 (1991-01-01), Nomura
JAPAN - vol. 18, No. 472 (M-1667) - 2 Sep. 1994.
JAPAN -vol. 16, No. 26 (M-1202) - 22 Jan. 1992.

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