Positive and negative bidirectional micro-displacement amplification flexible mechanism and method based on shear piezoelectric ceramics

A technology of piezoelectric ceramics and flexible mechanisms, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve complex mechanisms, small output displacement of piezoelectric ceramics, and application Range limitations and other issues, to achieve the effect of simple and symmetrical structure, high fundamental frequency and compact structure

Active Publication Date: 2020-09-15
XI AN JIAOTONG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] Since the output displacement of piezoelectric ceramics is too small, the application range is limited, so designing a micro-displacement amplification mechanism has been extensively studied.
In the prior art, most of the research is on the flexible micro-displacement amplification mechanism of linear piezoelectric ceramics, but these researched mechanisms are too complicated and can only achieve unidirectional micro-displacement amplification.

Method used

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  • Positive and negative bidirectional micro-displacement amplification flexible mechanism and method based on shear piezoelectric ceramics
  • Positive and negative bidirectional micro-displacement amplification flexible mechanism and method based on shear piezoelectric ceramics
  • Positive and negative bidirectional micro-displacement amplification flexible mechanism and method based on shear piezoelectric ceramics

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Embodiment Construction

[0020] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0021] Such as figure 1 , Figure 2a , Figure 2b with image 3 As shown, the present invention is a positive and negative bidirectional micro-displacement amplifying flexible mechanism based on shear-type piezoelectric ceramics, including a rhombus-shaped amplifying structure 1, located in the middle of the rhombic-shaped amplifying structure 1, and an upper displacement input terminal 1-3 formed integrally with it. The upper displacement output terminal 1-1 and the lower displacement output terminal 1-2 are respectively located at the upper and lower part of the diamond-shaped amplifying structure 1 and integrated with the diamond-shaped amplifying structure 1 with the lower displacement input terminals 1-4; symmetrically arranged in the diamond-shaped amplifying structure There are two shear piezoelectric ceramics 2 with exactly the same geometric di...

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Abstract

The invention discloses a positive and negative bidirectional micro-displacement amplification flexible mechanism based on shear type piezoelectric ceramic. The mechanism comprises a rhombus amplification structure, an upper displacement input end a lower displacement input end which are located at the middle of the rhombus amplification structure and integrally machined and formed with the rhombus amplification structure, four piezoelectric stack clamping pieces 3 which can fix two shear piezoelectric ceramics, and the one or more cylindrical rollers placed between the upper displacement input end and the lower displacement input end. The invention further discloses the displacement amplification method of the amplification flexible mechanism, positive and negative bidirectional micro-displacement amplification is realized by using two shear type piezoelectric ceramics based on the rhombus amplification structure, and the amplification flexible mechanism has the characteristics of thesimple and compact structure, the small size, capability of realizing the integrated processing and the variable amplification factor.

Description

Technical field [0001] The invention relates to the technical field of micro-precision machinery, and is a flexible mechanism that uses d31 shear-type piezoelectric ceramics to realize positive and negative micro-displacement amplification, and specifically is a positive and negative bidirectional micro-displacement amplification flexible mechanism based on shear-type piezoelectric ceramics And displacement amplification method. Background technique [0002] In recent years, with the rapid development of microelectronics, micromechanical technology, aerospace, bioengineering and other disciplines, micro-displacement technology has become one of the key technologies in precision motion systems and precision manufacturing processes. Piezoelectric ceramics have been widely studied and applied at home and abroad due to their small size, high displacement resolution, fast response speed, large output force and high energy conversion efficiency. [0003] Because the output displacement ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/04
CPCH02N2/043
Inventor 胡方泽徐明龙宋思扬廖诚肖瑞江
Owner XI AN JIAOTONG UNIV
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