| 摘要 |
PURPOSE: To correct imbalance, and avoid damage to parts by vibration caused by this imbalance by symmetrically positioning the center of gravity of two equal adjustable correcting members arranged in a balance weight to the symmetrical axis connecting the axis of a shaft and the axis of an eccentric receiving plate. CONSTITUTION: A central screw hole 2 to install a shaft part having an outside screw of a motor shaft is arranged on one end of the shaft. An eccentric recessed part to receive a bearing to bear a receiving plate 7 is formed on the other end of this shaft. A large diameter eccentric part 21 is arranged in this receiving plate 7 side end part, and this eccentric part 21 is positioned on the opposite side of the rotary axis 6 of the receiving plate 7 with the axis 5 of the shaft as the center. The center of gravity of at least the two same adjusting rings 31 and 32 arranged in the vicinity of the eccentric part 21 of the shaft, is symmetrically positioned to the symmetrical axis 23 connecting these axes 5 and 6. Imbalance is accurately corrected by chaging radial directional force over a wide range by adjusting an angle formed by the center of gravity of these adjusting rings 31 and 32 and the symmetrical axis 23. |
