| 摘要 |
Proposed is a laser machining method, in which laser machining is continued in an uninterrupted manner and with high accuracy while a workpiece is continuously moved at a fixed speed. Also proposed is a laser machining device. The laser machining method comprises a step in which, while a workpiece W is moved at a fixed speed in the X direction, the aim of a laser beam is made to scan, by means of a galvano scanner, in the X direction and the Y direction so that the laser beam draws a fixed trajectory within a galvano area, and the workpiece is irradiated by the laser beam at a prescribed position on the scanning line. The machining is carried out under the conditions and scope indicated by the formulas (1) Px/V ≧ Σ (Lt + Gt) and (2) Gx = Px × α, where Px is the reference machining pitch of the workpiece in the X direction, V is the movement speed of the workpiece in the X direction, Lt is the laser irradiation time, Gt is the galvano operation time (the aim movement time and settling time), Gx is the length of the galvano area in the X direction, and α is a constant (0 < α < 1). |
