| 摘要 |
PURPOSE: An ultrasonic rotation motor using a Langevin type ultrasonic vibrator is provided to reduce a manufacturing cost of the ultrasonic rotation motor by simplifying a structure of the ultrasonic rotation motor. CONSTITUTION: An ultrasonic rotation motor using a Langevin type ultrasonic vibrator includes two sheets of ring-shaped piezoelectric ceramics(1), a plurality of copper plate electrodes(2), a bolt(3), a horn(4), a vibration mode converter(5), a rotor(6), a spring(7), and a nut(8). The ring-shaped piezoelectric ceramics(1) are opposite to each polarization direction. The copper plate electrodes(2) are located on each center and each bottom of the ring-shaped piezoelectric ceramics(1). The copper plate electrodes(2) are inserted between the bolt(3) and the horn(4). The ultrasonic rotation motor is completed by combining sequentially the vibration mode converter(5), the rotor(6), the spring(7), and the nut(8).
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