| 摘要 |
PROBLEM TO BE SOLVED: To provide a resistance welding machine capable of welding a workpiece with a predetermined height (thickness) and posture to a base material at all times. SOLUTION: The resistance welding machine is provided with a height measuring part (53) for measuring the height of a workpiece (W) by bringing a upper electrode (30) in contact with the workpiece (W) placed on a base material (40); an air ejection passage (25) for jetting compressive air supplied from an air supply source from an axial center part of the upper electrode (30) toward the workpiece (W); a pressure sensor (29) for detecting pressure in the air ejection passage (25); and a determination part (84) for determining whether the energization to the electrode is necessary or not by inputting data of the height measuring part (53) and the pressure sensor (29). The electrode is energized, only when being determined to be "required" by the determination part (84). COPYRIGHT: (C)2010,JPO&INPIT
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