| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce the time for the starting of a gap control operation or the like, and to increase the precision and speed of the gap control operation. <P>SOLUTION: The laser beam machining device (1) where a laser beam injected from a machining nozzle (24) is condensed, and, while irradiating a workpiece (W) therewith, the machining nozzle and the workpiece are relatively moved based on a machining program so as to machine the workpiece comprises: a control shaft (29) fitted with the machining nozzle; a driving part (22) driving the control shaft in such a manner that the machining nozzle is progressed toward the workpiece and is retreated from the workpiece; a servo control part (12) controlling the driving part; a position detection part 23 detecting the position of the driving part; and a gap sensor (25) detecting a gap between the machining nozzle and the workpiece. The servo control part changes the position of the driving part detected by the position detection part based on the gap detection value detected by the gap sensor, thereby performs gap control of fixedly retaining the gap between the machining nozzle and the workpiece. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
