| 摘要 |
PURPOSE:To perform the certain laser beam machining by detecting photodetected light at the same time when the piercing of an object to be machined is finished by an optical sensor provided to the lower part to be machined of the object to be machined and controlling the irradiation of laser light based on this result. CONSTITUTION:When the laser light 21 is penetrated through the object 7 to be machined, the optical sensor 5 detects it. An RS flip-flop 6 is made in a reset state and the piercing time is automatically adjusted and the object to be machined is progressed to a next machining step by a detected signal from the optical sensor 5. The certain machining can be performed and a melting loss of a machining table can be prevented by the machine with this constitution. |
