| 摘要 |
PROBLEM TO BE SOLVED: To easily minimize and make compact a twin type simultaneously press system spot-welding apparatus disposing a plurality of welding guns in a common robot arm and to improve reliability of welding quality. SOLUTION: In the twin type disposing a plurality of e.g. two sets of electric motor type welding guns 10, 20 in one set of the robot arm 1, one set of the welding gun 20 is directly disposed in the robot arm 1 and the remained one set of the welding gun 10 is disposed in the robot arm 1 through an equalizing device 30, and two points in a work 3 are simultaneously press-welded with two sets of the welding guns 10, 20. A fixed side electrode of the welding gun 20 having no equalizing device performs an electrode wearing compensation as the same way as the ordinary single type welding gun and also is used as a tool for positioning the work, too. COPYRIGHT: (C)2003,JPO
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