Pusher block for rotary forging machines and method of using sam

Metal deforming – By use of tool acting during relative rotation between tool... – Work-hammering tool

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72420, 72422, B21J 1312

Patent

active

043218130

ABSTRACT:
A conventional rotary forging machine (M) includes a chuck (C) for gripping a workpiece (W) for moving it axially and for rotating the workpiece during the upset forging operation. The chuck may tend to deform the workpiece and relative axial and rotational movement may occur between the workpiece and chuck, thus requiring a prolonged cycle time for the operation. This invention overcomes the above problems by providing a pusher block (10) having grippers (17) thereon for engaging an end of the workpiece to push it through a pair of forging dies (D) and for simultaneously gripping and rotating the workpiece to prevent relative rotation therebetween. In carrying forth the method of this invention, the pusher block engages an annular (W') of the workpiece.

REFERENCES:
patent: 515376 (1894-02-01), Taft
patent: 1332798 (1920-03-01), Brown
patent: 1469833 (1923-10-01), Hanson
patent: 2512484 (1950-06-01), Cornell
patent: 2624224 (1953-01-01), Ashton
patent: 2827817 (1958-03-01), Johnson
patent: 3213951 (1965-10-01), Eeles
patent: 3753365 (1973-08-01), Kralowetz
patent: 3927449 (1975-12-01), Gibble et al.

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