| 摘要 |
PURPOSE:To weld the plural places of the pocket part of the works by one unit of equipment without increasing electrode displacements by providing the mechanism of turning a welding gun about the portion near the electrodes with respect to the machine body. CONSTITUTION:Parts such as rear end panel (b) and underbody (c) of an automobile are positioned between the electrodes 7 and 8 of a welding gun 3. A base frame 2 is lowered to subsequently spot-weld the central part of the welding portions of the parts (b) and (c) at the specified pitch. This welding is accomplished by intermittently moving the welding gun 3 in a vertical state in the width direction. When the welding gun 3 reaches the portions near the pocket part of the rear fender, the welding gun 3 is turned about the pin 14 by turning of a gun-mounting frame 11 and welding is done in the state that it is inclined to the specified angle. |
