Device for contactless measurement of dimensions

Details Device for contactless measurement of dimensions Device for contactless measurement of dimensions

1979-07-06

1981-12-22

Punter, William H.

Optics: measuring and testing

By polarized light examination

With light attenuation

356381, 356387, G01B 1100, G01B 1102, G01B 1112

Patent

active

043068111

ABSTRACT:
An apparatus for measuring a dimension of a workpiece, for instance a worece being machined on a lathe, comprises a unit which may be moved toward and away from the workpiece. That unit includes a forked carriage one of the prongs of the fork having a light source which directs a parallel light beam perpendicularly to the direction of movement of the carriage toward the other prong. Light sensitive means on the other prong deliver a first signal when the light beam is interrupted by the workpiece upon movement of the unit and a second signal when the light beam is re-established.

REFERENCES:
patent: 3362284 (1968-01-01), Patrignani
patent: 3555288 (1971-01-01), Morenius
patent: 3600815 (1971-08-01), Link
patent: 3712741 (1973-01-01), Revert
patent: 3778167 (1973-12-01), Claret et al.
patent: 4021119 (1977-03-01), Stauffer

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