Impact piezoelectric rotary motor

Abstract

The invention discloses an impact piezoelectric rotary motor, which comprises piezoelectric stacks put into a hollow cavity of a cylinder sleeve, a vibration coupler and a rotor, wherein two symmetrically distributed bosses with inclined surfaces are arranged on a bottom fixed plate of the cylinder sleeve; the bosses with the inclined surfaces are arranged on the bottom surface of the vibration coupler in a mirror symmetry manner; two piezoelectric stacks which are symmetric around a center line are obliquely arranged between the bottom fixed plate of the cylinder sleeve and the vibration coupler; two end surfaces of the piezoelectric stacks are arranged at the top ends of the inclined surfaces of the bosses separately; a contact surface in contact with the top end of the vibration coupleris arranged at one end of the rotor and an output shaft is arranged at the other end; a preloaded spring also sleeves the output shaft; and the output shaft extends out of a bearing fixed on an end cover. According to the impact piezoelectric rotary motor, miniaturization of the rotary motor is facilitated, the problems that an existing rotary motor is complicated in structure and difficult to process, manufacture and produce in batches are well solved and the impact piezoelectric rotary motor is suitable for the field of precise control, such as high-precision nano drive.

Description

technical field [0001] The invention belongs to the technical field of precision micro drives, and relates to an impact piezoelectric rotary motor. Background technique [0002] Piezoelectric motor is a kind of motor that uses the inverse piezoelectric effect of piezoelectric elements to excite the stator in the motor to generate micro-amplitude and high-frequency mechanical vibrations, thereby forming a particle motion with a specific trajectory at a specific point or area on the surface of the stator, and through The mutual frictional coupling between the stator and the mover and the resonance amplification are used to realize electromechanical energy conversion and output a new type of motor with macroscopic mechanical motion. Piezoelectric motors have many advantages, such as compact structure and easy miniaturization, high displacement resolution, fast response speed, high energy density, high torque at low speed, and no external electromagnetic interference. Micro-nan...

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is to provide an impact piezoelectric rotary motor, which provides the driving force and a part of the pre-tightening force through the vibration of two piezoelectric stacks placed obliquely in space, which solves the problem of the complicated structure of the existing rotary motor. Difficulties in processing and mass production, suitable for precision control fields such as high-precision nano-drives

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