Laser processing head and method for operation thereof

Details Laser processing head and method for operation thereof Laser processing head and method for operation thereof

1993-04-20

1994-03-29

Albritton, C. L.

Electric heating

Metal heating

By arc

21912178, 21912184, B23K 2614

Patent

active

052987167

ABSTRACT:
A laser cutting head has a nozzle as well as a lens disposed in a holder that is moveable by a mechanical drive along the laser beam axis and has a working gas supply port at the nozzle side of the head. The head also has an annular groove that is defined by concentric internal and external cylinders and a drive gas supply port in the external cylinder at the laser supply side of the head. An annular piston is formed at the laser beam application side end of the movable lens holder, that is disposed in the annular groove. The piston may be pressed toward the nozzle side of the head by the pressure of drive gas supplied through the drive gas supply port. The drive gas pressure and the area of the piston is selected to define an offsetting pressure for reducing the effect of the cutting gas on the lens and lens holder.

REFERENCES:
patent: 4031351 (1977-06-01), Martin
patent: 5237148 (1993-08-01), Aoki et al.

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