Method and device for setting the angular position of a workpiec

Details Method and device for setting the angular position of a workpiec Method and device for setting the angular position of a workpiec

1989-12-21

1991-04-02

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356387, G01N 2186

Patent

active

050049305

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.

REFERENCES:
patent: 3900738 (1975-08-01), McKay, Sr.
patent: 4340326 (1982-07-01), Buonauro et al.
patent: 4521112 (1985-06-01), Kuwabara et al.
patent: 4747911 (1988-05-01), Polson

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