| 摘要 |
PURPOSE:To cut a work smoothly and to restrain the generating rate of defective products by removing sputters sticking on the surface of the work when the machining process is shifted from piercing to cutting. CONSTITUTION:In a laser beam machining method to cut the work W by a laser beam L a through-hole (h) is formed by piercing working at the prescribed position. A working head 3 is lifted to the prescribed height position, and in a head lowering process, the sputter S in the vicinity of the through-hole (h) formed on the surface of the work is splashed off by blown assistant gas A. Then the working head 3 is stopped at the cutting height position and the work is cut in this state. |
