Apparatus for optically monitoring the surface finish of ground workpieces
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United States of America Patent
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-
Sep 15, 1987
Grant Date -
N/A
app pub date -
Apr 4, 1986
filing date -
Apr 6, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The surface of a rotating cylindrical workpiece is monitored by an optical testing unit while the workpiece rotates and is treated by the grinding wheel in a circular grinding machine. The optical testing unit is mounted in part on one sensor of a second testing unit which monitors the diameter of the surface of the workpiece. A transducer and a light source of the optical testing unit are remote from the one sensor and are connected by fiber optic conductors with a head which is recessed into the one sensor and focuses light upon the surface of the rotating workpiece and intercepts light which is reflected by the workpiece. Lubricant which coats the surface of the workpiece in the course of the grinding operation is blown away from such surface in the region where the light beam is focused upon the workpiece.
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