| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser device capable of stably obtaining a component in cutting a mild steel thick plate by a laser beam and excellent in yield and productivity.SOLUTION: A laser device includes: a workpiece temperature detecting means for detecting a temperature of a workpiece; a workpiece temperature distribution calculating means for calculating a temperature of respective portions of the workpiece other than the portions detected by the temperature detecting means with the usage of a thickness, thermal conductivity and heat capacity of the workpiece inputted in advance; an axis movement means for moving a machining torch to an optional position; and a laser beam machining parameter control means for controlling laser output and an assist gas flow rate. In correspondence with the temperature of the workpiece, the machining torch is moved, or the laser output and the assist gas flow rate are controlled. |
