A walking piezoelectric rotary motor

Abstract

The invention discloses a walking piezoelectric rotary motor, which adopts a coaxial structure composed of a piezoelectric torsion driver, two piezoelectric clamp bearing drive modules, two sleeves and a rotating shaft; the two sleeves are respectively Adhesively fixed at both ends of the piezoelectric torsion driver, the two piezoelectric clamp bearing drive modules are fixedly connected to the two sleeves through screws; the piezoelectric clamp bearing drive module is composed of a bearing unit and a piezoelectric stack, and is connected through the bearing sleeve The set pre-clamping force is applied to the rotating shaft by the ring, and the clamping motion is realized by driving the bearing ring through the piezoelectric stack; by controlling the torsion motion of the piezoelectric torsion driver and the timing sequence of the clamping motion of the piezoelectric clamping bearing drive module at both ends Realize the stepping motion of the rotary axis. The invention adopts a symmetrical structure layout, is compact in structure, is suitable for miniaturization, and can effectively improve its operating efficiency and stability.

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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