Longitudinal-shaking sandwich energy converter type collar plate shape dual rotor ultrasonic motor

Abstract

The invention relates to a longitudinal vibration sandwich transducer type disk double rotor ultrasonic motor which relates to the technical field of piezoelectric ultrasonic motors. The ultrasonic motor solves the problem in an existing ultrasonic motor that the mechanical output ability is restricted and a single stator only can realize single movement output. The longitudinal vibration sandwich transducer type disk double rotor ultrasonic motor of the invention comprises a stator component, an upper end rotor component, a lower end rotor component, an upper end outer cover, a lower end outer cover, a rotated bearing, a bearing pre-tightening end cap and a bearing support, wherein continuous comb-shaped driving gears are manufactured on the upper end surface of a disc, a wear resistancebush ring is fixed on the end surface of an upper end disc rotor, which is contacted with the disk, the wear resistance bush ring is fixed on the end surface of a lower end disc rotor, which is contacted with the small end surface of a rear end cap, an upper end output shaft and a lower end output shaft are connected with the bearing block through a bearing in a rotary mode, the upper end outer cover and the lower end outer cover are respectively fixed on the upper end surface and the lower end surface of a cylinder flange, and thereby the upper end outer cover and the lower end outer cover are coaxial with the disk. The longitudinal vibration sandwich transducer type disk double rotor ultrasonic motor can be applied in the manufacture field of ultrasonic motors.

Description

technical field [0001] The invention relates to a longitudinal vibration sandwich transducer-type disc-type double-rotor ultrasonic motor, which belongs to the technical field of piezoelectric ultrasonic motors. Background technique [0002] Piezoelectric ultrasonic motor is a kind of piezoelectric ultrasonic motor that uses the inverse piezoelectric effect of piezoelectric ceramics to excite vibration in the ultrasonic frequency range in the elastic body, and forms a particle motion with a specific trajectory at a specific point or area on the surface of the elastic body, and then passes through the stator, The frictional coupling between the rotors converts the microscopic motion of the particle into the macroscopic motion of the rotor. It has the advantages of low speed and high torque, no need for a transmission mechanism, no electromagnetic interference, fast response, and self-locking when power is off. As a piezoelectric driver, it has Very broad application prospects...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems existing in the existing ultrasonic motors that the mechanical output capability is restricted due to the use of metallic elastic bodies pasted with piezoelectric ceramic sheets for excitation and that a single stator can only achieve a single motion output, a longitudinal vibration motor is provided. Sandwich transducer type disc type double rotor ultrasonic motor

[0005] In the ultrasonic motor provided by the present invention, the piezoelectric ceramic element adopts a sandwich structure, and adopts piezoelectric ceramics with high electromechanical coupling efficiency d 33 Mode operation, to solve the problems of low electromechanical coupling efficiency and poor mechanical output capability of pasted piezoelectric ceramic chip piezoelectric ultrasonic motors, and also simplify the structure through the integrated structure of the front end cover and the stator disc, and improve the surface particle vibration of the disc elastic body The controllability of the trajectory eliminates the adverse effects on the vibration waveform of the stator caused by connecting the transducer and the disk in other ways

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