Walking piezoelectric rotary motor

Abstract

The invention discloses a walking piezoelectric rotary motor. A coaxial structure formed by a piezoelectric torsional actuator, two piezoelectric clamping bearing driver modules, two sleeves and a rotating shaft is adopted, wherein the two sleeves are fixed on the two ends of the piezoelectric torsional actuator respectively through adhesion, and two piezoelectric clamping bearing driver modules are fixedly connected with the two sleeves respectively through screws; each piezoelectric clamping bearing driver module is composed of a bearing unit and a piezoelectric stack, set pre-clamp force is applied to the rotating shaft through a bearing ring, and clamping movement is achieved through driving the bearing ring with the piezoelectric stack; step motion of the rotating shaft is achieved through controlling the timing sequence of the torsional movement of the piezoelectric torsional actuator and clamping movement of the two piezoelectric clamping bearing driver modules. According to the walking piezoelectric rotary motor, the layout of the structure is symmetrical, the structure is compact, micromation is applicable, and the operating efficiency and stability can be effectively improved.

Description

technical field [0001] The invention relates to the field of drivers, in particular to a walking piezoelectric rotary motor using a novel piezoelectric torsion driver and a piezoelectric clamp bearing drive module. Background technique [0002] With the rapid development of micro-nano science and technology, in various fields such as physical chemistry, biomedicine, aerospace, and new energy, there is an urgent need for micro-nano-level precision positioning and micro-nano-level precision drive technology. In the design of the existing micro-nano positioning operation mechanism, the serial rotary joint control mechanism can realize multi-degree-of-freedom movement, inherits the design characteristics of industrial robot hands and joint coordinate measuring machines, and has the advantages of compact overall structure, large three-dimensional motion range, and flexible control Strong and other advantages, has received widespread attention. In precision rotary positioning dri...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a walking piezoelectric rotary motor that uses a novel piezoelectric torsion driver and a piezoelectric clamp bearing drive module to realize a walking rotary stepping motion, so as to solve the problem of the miniature piezoelectric rotary motor with different driving methods in the prior art. Low level of automation, insufficient driving force, low precision, and poor stability

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