| 摘要 |
PURPOSE:To make a device small-sized and low-cost by transmitting the power to at least two running units from a common motor to move them simultaneously in different directions and placing tools laid on driving units, which are connected to the final stages of running units, in prescribed operating positions. CONSTITUTION:When a motor 7 as the common power source is started, moving tables 3, 4, and 5 arranged on the first third running units 2x, 2z, and 2y are moved simultaneously in directions of axial lines of spline shafts 9x, 9z, and 9y by the rotating power which is transmitted to ball screws 16x, 16z, 16y and ball nuts 17x, 17z, and 17y through spline shafts 9x, 9z, and 9y and clutch brakes 15x, 15z, and 15y, and stop positions are detected by rotary encoders 18x, 18z, and 18y. Thus, a spot welding gun 1 is positioned to a prescribed welding work position.
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