Method and device for setting the angular position of a workpiece on a machine-tool by means of a laser beam
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United States of America Patent
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Apr 2, 1991
Grant Date -
N/A
app pub date -
Dec 21, 1989
filing date -
Dec 21, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention concerns a method of precisely setting a workpiece (3) having a non-circular contour in a predetermined angular position. The workpiece (3) is placed in the path of a mobile laser beam (F) produced by a laser generator (10) and sweeping an area (P) in which the workpiece produces a shaded zone (Z) whose width (L) depends on the orientation of the workpiece. The width (L) is measured by a laser receiver (11) and the workpiece is turned until the measured width reaches a reference value (L1) when the workpiece is in the desired predetermined position. This method is advantageously used for angularly positioning, with a precision of about a 6 minute arc, a roughly-cut drill bit in a grinding machine for sharpening its tip.
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