LASER BEAM MACHINING APPARATUS, OFFSET ADJUSTING METHOD IN HEIGHT DIRECTION IN THREE-DIMENSIONAL LASER BEAM MACHINING, AND CONTROL PROGRAM OF LASER BEAM MACHINING APPARATUS

摘要

PPROBLEM TO BE SOLVED: To provide a laser beam machining apparatus capable of suppressing dispersion of the machining accuracy and the machining quality between works when machining characters or the like on the works having different heights. PSOLUTION: The laser beam machining apparatus comprises a machining pattern storage unit 116 for storing machining pattern information, an offset designation generation unit 115 for generating the offset designation for designating the offset quantity with respect to a reference machining surface of a machining surface based on a detection signal from a worksensor 101 detecting the work, a machining pattern changing unit 117 for changing position information in machining pattern information based on the offset designation, a scanning control unit 120 for scanning laser beams L based on machining pattern information after changing position information, and a beam diameter adjustment unit 119 for controlling the focal distance of the laser beams L based on machining pattern information after changing position information. PCOPYRIGHT: (C)2008,JPO&INPIT