| 摘要 |
PURPOSE:To make it possible to change the terminal ends of a slide rod in a device in which the slide rod is reciprocated by the rotation of a cam through levers, by providing a lever ratio variable part and a stroke variable part which are driven by motors. CONSTITUTION:A lever 4 is swung around a shaft 3 by the rotation of a cam 2 to reciprocate a slide rod supported by a bearing 7, for positioning a work 10. In such a device, a lever ratio variable part A and a stroke variable part B are provided for the lever 4 and the slide rod 11, respectively. The lever ratio variable part A is adapted to move, by the rotation of a motor 20, an adjusting block 14 threadedly engaged with a screw shaft 16 in the X direction to displace the position of a cam follower 6 connecting the lower end of an adjusting rod 12 with the lever 4. Meanwhile, the stroke variable part B is similarly adapted to move, by the rotation of a motor 35, an adjusting block 28 in the J direction to displace a slide rod 25 by means of an adjusting rod 23. |
