Electric heating – Metal heating – By arc
Patent
1980-11-18
1982-04-13
Albritton, C. L.
Electric heating
Metal heating
By arc
219121LC, 219121LG, 219121LH, 219121LK, 219121LR, B23K 2700
Patent
active
043249728
ABSTRACT:
In a laser beam cutting device the focussing of the laser beam (1) and the adjustment of the focal spot (4) in respect of its vertical position is made swing free, and is achieved without subsequent correction of the workpiece coordinates, with the focussing lens (2) guided strictly parallel and coaxial with the optical axis. By active cooling of the surface of the workpiece in the immediate area of the focal spot (4), the critical heating-up zone is reduced and the accuracy and surface finish of the cut edge is improved.
REFERENCES:
patent: 3569660 (1971-03-01), Houldcroft
patent: 3626141 (1971-12-01), Daly
patent: 3679863 (1972-07-01), Houldcroft et al.
patent: 4027137 (1977-05-01), Liedtke
Furrer Alfred
Wehrli Hans
Albritton C. L.
Laser-Work A.G.
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