Laser beam machining and apparatus therefor

Details Laser beam machining and apparatus therefor Laser beam machining and apparatus therefor

1990-07-02

1991-03-26

Albritton, C. L.

Electric heating

Metal heating

By arc

21912163, 21912169, 21912178, 21912182, B23K 2600

Patent

active

050031538

ABSTRACT:
A laser machining process and an apparatus therefor, in which a main sensor is moved for scanning relative to a scanning model having a machining pattern depicted thereon, and a laser beam generator is moved, in synchronization with this scanning, relative to a work piece comprising a rubbery material so as to effect laser beam irradiation on the work piece in accordance with the pattern detected by the main sensor; characterized in that said main sensor has a sub-sensor for detecting the machining pattern prior to the detection by the main sensor and that control of the output of the laser beam generator is achieved by stepwise shifting in accordance with the pattern detection by these sub-sensor and main sensor, whereby multi-stepped protrusions are formed on the surface of the work piece. The scanning model and the work piece may be loaded on the same table for moving them synchronously for the scanning and the laser beam irradiation, respectively; or alternatively they may be loaded on separate disc-shaped tables which are driven in the opposite directions for obtaining a negative from a positive pattern or in the same direction for reproducing the original pattern as multi-stepped protrusions.

REFERENCES:
patent: 3404254 (1968-10-01), Jones
patent: 3663793 (1972-05-01), Petro et al.
patent: 3739083 (1973-06-01), Landsman
patent: 4406939 (1983-09-01), Golker
patent: 4480169 (1984-10-01), Macken
patent: 4947022 (1990-08-01), Ostroff et al.

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