| 摘要 |
<p>A rotary body construction capable of being surely adjusted in balance as an entire rotary body construction without adversely affecting respective constituent elements. Balance rings (6) are mounted on a rotor (3) to form a unit, and set screws (9) are threaded into some of tapped holes (8) formed in the balance rings (6) to adjust balance of the unit. Since it is not necessary to form a large number of tapped holes in the rotor (3), a mechanical strength of the rotor itself is ensured. Since the unit is fixed integrally to a motor shaft (2) after being adjusted in rotating balance, the balance rings (6) need not be fixed rigidly to the rotor (3), so that the number of tapped holes (16) for connection is small and the tapped holes can be made small in depth.</p> |
