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    • 2. 发明专利
    • ROTOR POSITIONING DEVICE
    • JPS6065950A
    • 1985-04-15
    • JP17279683
    • 1983-09-19
    • SONY CORP
    • NISHIMURA MASANORI
    • F16H35/08B23Q15/26
    • PURPOSE:To heighten the positioning accuracy by stopping a rotor according to a distance between a reference position and a specified portion when the specified portion reaches a fixed area near the reference position in case of detecting a rotating position of the specified portion of the rotor and positioning the specified portion at the reference position. CONSTITUTION:In case of using a work disk 1 with a workpiece, a rotor such as a rotor of a motor fixed in a balancing machine rotated by a servomotor 3, there are provided a pulse generating circuit 21 for generating accelerating and decelerating pulses of a reference period and a pulse signal generating circuit 21, 23 interlocking with the servomotor 3. Output pulses of the circuits 21, 23 are input through a switch circuit 22 to a reversible deflection counter 16. Further there is provided a rotating position counter 28 to which an output signal of an unbalance position detecting circuit 8 is input when an unbalance portion 2A of the rotor reaches a detection position P2, and the switch circuit 22 is changed over to the connection side of the circuit 23 in response to an output of a comparator 30 when the count value enters a fixed range near a reference position.