| 摘要 |
PROBLEM TO BE SOLVED: To simplify and automate welding equipment by forming a weld joint part with slightly overlapping a plurality of pressed parts, successively pressing the weld joint part with an electrode or simultaneously pressing with the plurality of electrodes and conducting projection welding while squeezing the welding joint part to the thickness equivalent to a base metal thickness. SOLUTION: Split electrodes 3A-3D are supported to a support frame 2 of a resistance welding machine along the longitudinal direction of a lap joint part. The tips of the split electrodes 3A-3D are formed to the electrode face having the shape copying a work surface. Two pressed parts are supplied on a fixed electrode of a work fixing jig 4 and fixed with arranging a slight lap margin. A pressing actuator 5 is intermittently moved and stopped respectively on the split electrodes 3A-3D, successively welding force is applied, projection welding is done while the pressed parts are energized and squeezed.
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