Piezoelectric type stepping precision rotation driver

A rotary drive, precision technology, applied in the hydraulic field, can solve the problems of hindering the piezoelectric drive, the minimum resolution of the drive displacement and the inability to take into account the large enough motion stroke, and achieve the effect of large stroke rotation

Inactive Publication Date: 2015-03-25
田荣侠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the precision driving mechanism currently researched and developed often has the problem that the minimum resolution of the driving displacement and the large enough motion stroke cannot be taken into account, which hinders the better application of piezoelectric actuators to practical projects.

Method used

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  • Piezoelectric type stepping precision rotation driver

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Embodiment Construction

[0010] As shown in the figure, the present invention includes an upper mechanism 7 and a lower mechanism 8. The upper mechanism 7 is provided with a driving piezoelectric stack 6, a pre-tightening mechanism 5, an upper piezoelectric stack 3 and a pre-tightening screw 1, and the upper mechanism 7 It is connected to the lower mechanism 8 by a flexible hinge 2.

[0011] As a preferred solution, an upper piezoelectric stack 3 is provided on each side of the rotor 4 of the present invention.

[0012] A prototype of a piezoelectric-driven precision rotary drive. The flexible hinge realizes the guidance and elastic recovery of the precise rotation movement, and at the same time connects the upper and lower structures; in addition, the upper and lower structures each realize the clamping effect on the rotating shaft through a set of flexible hinges, and the mechanical processing of all flexible hinges is adopted Wire cutting is completed. In order to obtain a larger amount of deformat...

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Abstract

The invention belongs to the hydraulic field, particularly relates to a hydraulic control system, provides a piezoelectric type stepping precision rotation driver and aims to realize properties of minimum driving displacement and large enough resolution and motion stroke. The piezoelectric type stepping precision rotation driver comprises an upper mechanism and a lower mechanism. The piezoelectric type stepping precision rotation driver is characterized in that the upper mechanism is sequentially provided with a driving piezoelectric stack, a pre-tightening mechanism, an upper piezoelectric stack and a pre-tightening screw, and the upper mechanism and the lower mechanism are connected through a flexible hinge.

Description

technical field [0001] The invention belongs to the hydraulic field, in particular to a hydraulic control system. Background technique [0002] Due to the advantages of rapid response, large output, high displacement resolution, high electromechanical conversion rate, and compact structure, piezoelectric ceramic elements have been used by domestic and foreign researchers to develop quite a few micro-precision driving mechanisms. Precision optics, micro-electromechanical systems, aerospace technology, and biomedical engineering show broad application prospects. However, the precision driving mechanism researched and developed at present often has the problem that the minimum resolution of the driving displacement and the large enough motion stroke cannot be taken into account, which hinders the better application of piezoelectric actuators to practical projects. Contents of the invention [0003] The present invention aims at the above-mentioned problems, and provides a pi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/14H02N2/12
Inventor 田荣侠李学海
Owner 田荣侠
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