Optical path axis aligning device of laser beam machine

摘要

The invention provides a device for improving the efficiency of operation for aligning the optical axis of mirrors disposed in an optical path for laser transmission in a laser beam machine. The laser beam LB output from a laser oscillator of a laser beam machine is transmitted via multiple mirrors M 1 , M 2 etc. disposed in the optical path thereof to a torch. A mirror for receiving the laser beam LB from the mirror M 2 is removed and a laser beam detecting device 100 is attached in replacement thereof. The laser beamLB is passed through a cross-shape target 122, a portion of which is branched and taken as image by a laser beam detecting picture element 180. The data is sent to a personal computer 200 disposed near the mirror M 2 being subjected to alignment, and displayed as image data C 1 . The operator operates adjusting screws 71 and 72 to change the tilt angle of the mirror M 2 while watching the image data C 1 , so as to align the optical axis of the laser beam LB.