| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a device and method in which timing for performing laser irradiation and feeding a welding wire to a weld zone is controlled in the manner suppressing a possibility of generation of weld defects. <P>SOLUTION: The laser welding equipment is provided with an irradiation head 2 for emitting a laser beam 12 to a weld zone of a workpiece 10 and a welding wire feeding device 4 for feeding a welding wire 11 to the weld zone. In this equipment, after a voltage is preliminarily applied from the power source 13 to the welding wire 11, the welding wire 11 is fed until coming into contact with the workpiece 10. An electric current passed to the wiring 14 by this contact is detected with a relay 15. Thereafter, emission of the laser beam 12 from a laser oscillator 1 is started from the irradiation head 2 to the weld zone, so that the timing is obtained in which the welding wire 11 is surely fed to the weld zone at the start of the welding. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
