| 摘要 |
PURPOSE:To improve the centering accuracy of a motor and to easily increase the rotary accuracy of a driven body by a method wherein a rotary shaft mounting a rotor and the driven body is hollowly formed and a fixed supporting shaft is inserted in the inside of the rotary shaft for supporting the shaft through a bearing. CONSTITUTION:A motor rotary shaft 7 mounting the motor rotor 12 of a rotary driving section 1 and a rotary driven body 2 is hollowly formed on at least the opposite end sections. A bearing 51 is provided in the hollow section to support the shaft with free rotation against the fixed supporting shaft 5 penetrated in the hollow section. This easily increased the centering accuracy of the motor rotary shaft 7 and easily performs assembly and adjustment. |
