Method and apparatus for laser cutting

Details Method and apparatus for laser cutting Method and apparatus for laser cutting

1995-02-23

1997-11-18

Paschall, Mark H.

Electric heating

Metal heating

By arc

2191217, 21912172, 21912162, B23K 2600

Patent

active

056884184

ABSTRACT:
A laser cutting method is provided for laser cutting a workpiece made of a metallic material to form hole having a desired shape, in which many of a second set of laser cutting conditions are different from a set of first laser cutting conditions, in order to avoid a chipping phenomenon when switching laser cutting conditions. The first laser cutting conditions are used for cutting the workpiece up to a predetermined distance short of the end point of the cut. The second set of cutting conditions are used for cutting the workpiece between an end point of the cut along the circumference of the hole, and a point a predetermined distance short of the end point of the cut. The focus position in the second laser cutting conditions is the same as the focus position in the first laser cutting conditions. Moreover, other of the second cutting conditions are the same as corresponding ones of the first set of cutting conditions.

REFERENCES:
patent: 5012069 (1991-04-01), Arai
patent: 5155328 (1992-10-01), Ikawa
patent: 5491318 (1996-02-01), Sugawara et al.

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