| 摘要 |
PROBLEM TO BE SOLVED: To realize the working such as superhigh accurate cutting and grinding at high-speed rotation and high-speed feeding, in a retaining tool for a rotating tool to be fitted to the spindle of a machine tool. SOLUTION: A retaining tool is provided with an outer cylindrical body 5 having a tapered outer circumferential surface 4 which is abutted on the inner circumferential surface 3 of the tapered hole 2 of a spindle 1, a retainer body 9 having both an inner cylindrical part 6 on which the outer cylindrical body 5 is externally fitted so as to be slidable in the axial direction and an outer flange part 8 that is formed on the end side of the inner cylindrical part 6 and also that is made to be abuttable to the end surface 7 of the spindle 1, and an elastically repulsive member 10 that elasically and repulsively energize the outer cylindrical body 5 to the base end side with regard to the retainer body 9. |
