Pulsing impact straightener

Details Pulsing impact straightener Pulsing impact straightener

1981-03-20

1983-11-22

Larson, Lowell A.

Metal deforming

With use of control means energized in response to activator...

Metal deforming by use of roller or roller-like tool element

72 53, 72 76, 29 6, B21K 108

Patent

active

044161301

ABSTRACT:
An automatic production workpiece straightener employing pulsing impact hammer peening blows on the concave curvature side of a distorted workpiece to straighten by imparting compressive stress to the surface fibers thereby permanently deflecting the workpiece in a straightening direction. As applied to rotatable shafts such as cast iron camshafts, a plurality of peening heads deliver rapidly pulsing axially spaced impact blows to cylindrical grooves in the shaft during a limited portion of each continuous revolution as required to provide straightening action with continuous or peening-interrupted automatic gauging for controlling and terminating the straightening action.

REFERENCES:
patent: 2888846 (1959-06-01), Peras
patent: 3208250 (1965-09-01), Fournier
patent: 3335587 (1967-08-01), Blachut et al.
patent: 3491566 (1970-01-01), Hurd
patent: 3948076 (1976-04-01), Eitel et al.
patent: 3986380 (1976-10-01), Biggs
patent: 4226111 (1980-10-01), Wahli

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