| 摘要 |
PROBLEM TO BE SOLVED: To improve repetition accuracy of centering.SOLUTION: A radial holding mechanism 23 includes a plurality of radial holding parts 25 arranged at equal intervals in a circumferential direction of an abutment member 7. Each of the radial holding part 25 includes: a plate spring 27 of which one end is fixed to a base member 5, the plate spring 27 extending to an outer side in a radial direction, being folded forward, and extending to an inner side in the radial direction; a holding claw 29 which is fixed to a free end of the plate spring 27 and holds a workpiece from the outer side in the radial direction; a locking member 31 which displaces the free end of the plate spring 27 rearward, holds the workpiece by the holding claw 29, and displaces the free end of the plate spring 27 forward and releases the workpiece; and a hydraulic cylinder 17.SELECTED DRAWING: Figure 3 |
