MULTISHAFT HEAD REPLACEABLE MACHINE TOOL

PROBLEM TO BE SOLVED: To excellently operate a driving source, without having influence on operation of the driving source, while rotating a tool at a high speed, by improving a multishaft head replaceable machine tool. SOLUTION: A connecting device 156 is composed of an inside slider 87 joined by a spline to an input shaft 96 on one end side, joined by the spline to a large diameter part 121 arranged on an output shaft 155 in an intermediate part and sliding in the shaft direction of the output shaft 155 and a small diameter part 122 having a diameter smaller than the large diameter part 121 on the other end side and arranged on the output shaft 155, a ball bearing 88 fitted to an outer peripheral surface of this inside slider 87, an outside slider 93 fitted to an outer peripheral surface of this ball bearing 88 and sliding in the shaft direction of the output shaft 155 and an inner peripheral surface of a hole part 92 opened in a body part 61 for storing the output shaft 155, and a coil spring 97 arranged between the outside slider 93 and the other end part of the holer part 92 for energizing this outside slider 93 to a stopper member 94. COPYRIGHT: (C)2007,JPO&INPIT