| 摘要 |
PURPOSE:To improve the stability in supporting effect and working accuracy by allowing object receiving bases to follow up the change and deviation in the attitudes of objects and maintaining supporting force constant. CONSTITUTION:The mounting part in a placing part (n) is constituted combinations of free rotating mechanism parts (a) around the center of a vertical shaft, free sliding mechanism parts (b) in lateral directions, and free sliding mechanism parts (c) in vertical directions. A force regulating mechanism part that maintains the supporting force in the part (n) constant or roughly constant is provided in the mechanisms (c). Therefore, if a drum or the like 2 is rotated when the same warps, the movements in X, Y, Z, R are generated but are absorbed by the rolling of wheels 29 and the mchanisms (a), (b), (c). The reaction against the supporting effect changes with the movements in the direction Z but the supporting force is maintained constant by the operation of relief valves attached to air cylinders. |
