| 摘要 |
<p>When a high-speed motor is used to drive a spindle of a machine tool, machining accuracy will drop due to even a slight unbalance of rotating parts. Therefore, labyrinth formation disc members (22F, 22R) at the front and rear portions of a motor and a revolution detection gear member (24G) of an output shaft (14), which are inherent to the motor, are utilized. In other words, a plurality of screw holes (22A) are bored in advance on the outside surface of each of these members and balance adjustment is carried out by meshing a screw component (26) with the screw hole at a suitable position while measuring an unbalance quantity after the motor is assembled.</p> |
