| 摘要 |
PURPOSE: A welding robot is provided to weld without transferring to a next process or using a tool changer when a welding is unnecessary. CONSTITUTION: Welding guns(12,14) are installed in an arm of a robot(10). A common transformer(16) is installed in the arm to transform the electricity to be fed to tips of the welding guns. A control unit(18) feeds the electricity to the welding guns selectively by controlling the electricity through the transformer. By installing many welding guns in one robot, the transferring to a next process or a tool changer is unnecessary when a welding is impossible because of a different shape. Thereby, the productivity is improved and the production cost is reduced.
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