Workpiece centering apparatus and method

Details Workpiece centering apparatus and method Workpiece centering apparatus and method

1985-07-31

1987-04-07

Evans, F. L.

Optics: measuring and testing

By polarized light examination

With light attenuation

G01B 1100

Patent

active

046555960

ABSTRACT:
A workpiece is centered on a transparent work surface by optically transposing one edge of the workpiece to a point beneath the work surface and adjacent the opposite edge of the workpiece and then sliding the workpiece sideways until the transposed edge image is aligned with the actual second edge of the workpiece.

REFERENCES:
patent: 3548196 (1970-12-01), Minasian
Echelmeier, IBM Technical Disclosure Bulletin, vol. 16, No. 3, Aug. 1973, p. 975.

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