| 摘要 |
The invention relates to a method for monitoring the quality of spot welding, in particular for robotic applications. According to said method, workpieces, in particular metal sheets ( 3, 4 ), are welded together by means of spot welding tools. The sheets ( 3, 4 ) are placed between at least two electrodes ( 6 ), which are pressed against one another and supplied with energy. The weld spot ( 13 ) is evaluated by means of an evaluation element, in particular an optical visualization. A tape is placed between the electrodes ( 6 ) or electrode caps ( 8 ) and the sheets ( 3, 4 ), said tape being transported onwards after the welding process. The tape ( 7 ) is configured in such a way that a mirror-image, in particular a proportional reproduction or impression ( 14 ) of the weld spot that has been produced on the workpiece, is created by the welding process on the tape ( 7 ). The reproduction or impression is detected and evaluated by the evaluation element and the size, shape and position of the weld spot are deduced.
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