| 摘要 |
PROBLEM TO BE SOLVED: To provide an automatically replaceable tool detachably mounted to a spindle of a machine tool and drivable without being connected to an external power source or the like. SOLUTION: This tool detachably mounted to the spindle of the machine tool has a machining tool for machining a workpiece; a motor 80 for driving the machining tool; a generator 70 receiving rotational force transmitted from the spindle of the machine tool and generating electric power for driving the motor; and fuses FU, FV, FW for cutting off current supply lines CU, CV, CW from the generator 70 to the motor 80 when a current of the prescribed value or more flows to the current supply lines. |
