Laser processing apparatus and laser arc hybrid welding apparatus

摘要

Problem to be solved: to provide a laser beam machining apparatus capable of suppressing machining efficiency and quality reduction by thermal lens effect and a laser arc hybrid welding apparatus using the same.The laser head 40 includes a condenser lens 42 and a cooling system 100 for cooling the condenser lens 42 by refrigerant.The cooling system 100 includes a temperature sensor 84 for detecting the temperature of the refrigerant and a controller 90.Based on the temperature of the refrigerant detected by the temperature sensor 84, the controller 90 calculates a correction amount of the focal position of the laser beam 50 irradiated from the condenser lens 42 to the mother material 70, and controls the lens driving device 48 in accordance with the calculated correction amount.Diagram