SPOT WELDING DEVICE

PROBLEM TO BE SOLVED: To provide a method of supplying earth capable of being used regardless of type of a workpiece without putting a load on an earth cable in an indirect spot welding device which grasps the workpiece by a workpiece-grasping jig provided at a leading end of an arm of a robot and p...

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Bibliographische Detailangaben
1. Verfasser:	ONO MASAHARU
Format:	Patent
Sprache:	eng
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method of supplying earth capable of being used regardless of type of a workpiece without putting a load on an earth cable in an indirect spot welding device which grasps the workpiece by a workpiece-grasping jig provided at a leading end of an arm of a robot and performs spot welding by a welding gun.SOLUTION: A bus bar to be electrically connected to the workpiece is attached to a robot base portion whose operation range is narrow and an electrical circuit is constituted by connecting/disconnecting a contact gun attached with an earth electrode together with a spot gun to/from a bus bar.