| 摘要 |
PURPOSE:To adjust to an optional height by optionally rotating a cylindrical cam so as to move up and down a sleeve freely slidable up and down in the central axis direction in the cylindrical cam. CONSTITUTION:A cylindrical cam 4 is freely movably inserted around a sleeve 1 penetrated by a sliding member 11 sliding up and down in the central axis direction. A coupling member 13 capable of contacting with the flank 7 of the cylindrical cam 4 is fitted to the sliding member 11, and the lowered position of the sliding member can be adjusted by optionally changing the rotating angle of the cylindrical cam 4. Therefore, the member 11 can be adjusted to an optional height in accordance with the height of objective parts. The rotation of the cam 4 is performed through a timing belt 9. |
