Process and device for machining workpieces by means of a laser

Details Process and device for machining workpieces by means of a laser Process and device for machining workpieces by means of a laser

1993-01-13

1994-12-27

Albritton, C. L.

Electric heating

Metal heating

By arc

21912169, 21912171, 21912185, B23K 2602

Patent

active

053767705

ABSTRACT:
A process for precision control of a laser beam for machining workpieces while achieving high surface quality. The actual distance between a reference location and the workpiece surface is determined. A setpoint/actual value deviation between a predetermined setpoint distance and the actual distance measured is also determined. Control parameters are determined by a control unit in accordance with the setpoint/actual value deviation. The resulting control parameter outputs are coupled to a laser control unit to control the beam power of the laser. The disclosure also includes the apparatus for accomplishing the process.

REFERENCES:
patent: 4825035 (1989-04-01), Moriyasu et al.
patent: 4914270 (1990-04-01), Copley et al.
patent: 5063280 (1991-11-01), Inagawa et al.
patent: 5237148 (1993-08-01), Aoki et al.
Tonshoff et al., "Laserfrasen-Formabtrag mit Hochleistungslasern", in Laser-Magazin, vol. 6, pp. 16-24 (1991).
Baier, "Elektronik Lexikon," Franck'sche Verlagshandlung, W. Keller & Co., Stuttgart, pp. 406, 407 (1982).

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