Laser beam machining method

Details Laser beam machining method Laser beam machining method

B - Operations, Transporting

23

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327/1.4

B23K 26/00 (2006.01) B23K 26/08 (2006.01) B23K 26/36 (2006.01) G05B 19/18 (2006.01)

Patent

CA 2039710

ABSTRACT OF THE DISCLOSURE A laser beam machining method of processing a machining path having an acute angle in a CNC laser machining apparatus. A numerical control device (CNC) previously reads a machining program, to thereby detect an acute angle not greater than an allowable angle in the machining path. A machining operation is executed under normal machining conditions before a vertex (33) of the acute angle is reached and is stopped at the vertex (33) of the acute angle, and the region near the vertex (33) is cooled for a predetermined time by a cooling medium, whereby a lowering of the cut surface roughness due to an overheating by a laser beam (7) is prevented. After the cooling, the cutting work is executed under drilling conditions to continue the machining.

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