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Ultrasonic rotary motor by using longitudinal-torsional vibration converter with holes

A mode conversion, ultrasonic motor technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the problem of high cost, unfavorable motor industrialization, torsional vibration ceramics Complicated chip processing technology and other issues, to achieve the effect of simple structure, conducive to industrialization, and low cost

Inactive Publication Date: 2010-07-28
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

However, the torsional vibration mode needs to be excited by the torsional vibration ceramic sheet, and the processing technology of the torsional vibration ceramic sheet is complicated and the cost is high, resulting in high cost of the motor, which is not conducive to the industrialization of the motor

Method used

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  • Ultrasonic rotary motor by using longitudinal-torsional vibration converter with holes
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  • Ultrasonic rotary motor by using longitudinal-torsional vibration converter with holes

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing, the technical scheme of invention is described in detail:

[0015] Hole mode conversion type ultrasonic motor of the present invention such as figure 1 As shown, it includes a stator assembly and a rotor assembly. It is characterized in that: the stator assembly is composed of a counterweight 1, fastening bolts 2, longitudinal vibration piezoelectric ceramic sheet group 3, and a hole mode converter 41; the rotor assembly is composed of a rotor 51, a torque output connector 61, a radial Bearing 63, first spring cover 64, spring 65, second spring cover 66, lock nut 67 form. Among them, the counterweight 1, the longitudinal vibration piezoelectric ceramic sheet group 3 and the hole mode converter 41 are sequentially arranged into a rod-type sandwich structure, and are pressed and fixed by fastening bolts 2 to form a stator body. Electrode sheets 32 are spaced between the piezoelectric ceramics 31 for applying an electrical ...

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Abstract

The invention discloses an ultrasonic rotary motor by using a longitudinal-torsional vibration converter with holes, which belongs to the ultrasonic motor. The motor comprises a stator component, a rotor component and a prestress device, wherein the stator component consists of a balance weight, a fastening bolt, a longitudinal vibrating piezoelectric ceramic element group and the longitudinal-torsional vibration converter with holes; the rotor component consists of a rotor, a torque output connector and a radial bearing; and the prestress device consists of a first spring cover, a spring, a second spring cover and a locking nut. The motor has the characteristics of simple structure, low cost and great output torque.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic motors, and in particular relates to a hole mode conversion type ultrasonic motor. Background technique [0002] Ultrasonic motor is a new type of power output device that utilizes the inverse piezoelectric effect of piezoelectric ceramics and ultrasonic vibration. Compared with electromagnetic motors, it has the advantages of compact structure, high torque at low speed, fast response (millisecond level), self-locking when power is off, good position and speed control, no electromagnetic interference, and low-noise operation. Longitudinal-twisting composite ultrasonic motor is a major category of ultrasonic motors. The research on it can be traced back to the late 1980s. So far, there are no less than dozens of types of structures. The longitudinal-torsion composite ultrasonic motor usually contains two vibrators—a longitudinal vibrator and a torsional vibrator. The longitudinal and torsional ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/02H02N2/04
Inventor 赵淳生杨淋
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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