| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique of easily and inexpensively driving a movable body by a plurality of motors in cooperation with each other. SOLUTION: When the movable body 124 makes contact with a first roller 133A and a second roller 133B, the movable body 124 is moved by the torque of the first roller 133A and the second roller 133B, and therefore a driving material is driven into a workpiece by the movement of the movable body 124. The first roller 133A and the second roller 133B are driven for rotation by a first motor 113A and a second motor, respectively, and the first and second motors are each composed so as to change their rotational speeds according to change in load. COPYRIGHT: (C)2009,JPO&INPIT
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