ELECTRODE NON-CONSUMPTION TYPE WELDING ROBOT AND ARC WELDING METHOD USING IT

摘要

PROBLEM TO BE SOLVED: To surely detect the position of a work to be welded, to weld even a narrow part, to automatically measure the wear of a tungsten electrode, and to automatically exchange the tungsten electrode in a welding robot to automatically perform the arc welding. ;SOLUTION: In a welding robot, a tungsten electrode 8 for the arc welding which is fitted to a tip of a robot body 1 is used as a probe for the touch sensing to detect the position of a work to be welded. A reference block 9 is provided on the welding robot, its surface is touch-sensed by the tungsten electrode 8 to automatically measure the wear of the tungsten electrode 8, and when the measured value exceeds the prescribed value, the tungsten electrode is exchanged with a new one by a tungsten electrode exchanging device.;COPYRIGHT: (C)1997,JPO