Automatic straightening machine

Details Automatic straightening machine Automatic straightening machine

1977-09-07

1979-05-15

Keenan, Michael J.

Metal deforming

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

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

72389, B21D 310

Patent

active

041540735

ABSTRACT:
An apparatus and method for straightening an elongated workpiece such as a crank shaft is disclosed. At least four measuring devices are disposed along the workpiece for measuring the position of four points on the workpiece relative to an axis extending between the ends of the workpiece. Signals from the measuring devices are converted to curvature signals representing the curvature of each section of the workpiece spanned by a sequence of three of the points, and straightening blows are applied as needed to sections of the workpiece to reduce or remove the curvatures. Subsequently the measuring devices may be employed to measure eccentricity at the four points and further straightening blows can be applied to reduce or remove eccentricity.

REFERENCES:
patent: 1551715 (1925-09-01), Urschel
patent: 3208250 (1965-09-01), Fournier
patent: 3316743 (1967-05-01), Ovshinski
patent: 3335587 (1967-08-01), Blachut et al.
patent: 3415103 (1968-12-01), Crawford et al.
patent: 3481170 (1969-12-01), Galdabini
patent: 3943746 (1976-03-01), Eitel
patent: 3948076 (1976-04-01), Eitel

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