LASER BEAM MACHINING DEVICE AND LASER BEAM MACHINING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a laser beam machining device with which the effective utilization of the energy necessary for machining is made possible without generating excess energy and the improvement in productivity is thereby made possible by rising the machining efficiency in machining using the laser beam oscillated from a laser oscillator which outputs the laser beam in the pulse radiation time below 1 pico second and a laser beam machining method. SOLUTION: The method of performing optical laser abrasion machining by using the laser beam from the laser oscillator 1 which continuously radiates light pulses of the large spatial intermittent energy density in the pulse radiation time below 1 pico second is so constituted that the laser beam from the laser oscillator 1 is divided 3 to plural beams and plural workpieces are simultaneously irradiated with the lasers by means of discrete optical systems by each of the respective divided beams.