SPOT WELDING GUN CONTROL DEVICE

PROBLEM TO BE SOLVED: To provide a spot welding gun control device capable of reducing the difference between the target pressure and the detected pressure without depending on the individual difference. SOLUTION: A control device (30) of a spot welding gun (20) includes a detection means (27) for d...

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Bibliographische Detailangaben
Hauptverfasser:	KODERA SHUN, TAKAHASHI HIROMITSU
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 spot welding gun control device capable of reducing the difference between the target pressure and the detected pressure without depending on the individual difference. SOLUTION: A control device (30) of a spot welding gun (20) includes a detection means (27) for detecting the actual pressure waveform when operating the spot welding gun based on the target pressure waveform of the pressure applied between a first electrode tip (22) fitted to a gun shaft and a second electrode tip (21) opposing the first electrode tip, a deviation calculation means (33) for calculating the deviation between the detected pressure waveform and the target pressure waveform, a comparison means (34) for comparing the deviation with the threshold, and a correction quantity calculation means (35) for calculating the correction quantity for correcting the operational command value of the gun shaft determined according to the target pressure waveform based on the deviation when it is determined that the deviation is larger than the threshold. COPYRIGHT: (C)2009,JPO&INPIT