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A Symmetrical Differential Lever Micro-displacement Amplifying Device

An amplifying device and symmetrical technology, applied in the field of symmetrical differential lever micro-displacement amplifying devices, can solve the problems of shear damage of piezoelectric rods, small stroke of the amplifying mechanism, etc., to avoid shearing force, reduce errors, and eliminate lateral The effect of additional displacement

Active Publication Date: 2018-05-22
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The stroke of the amplification mechanism is relatively small, and at the same time, it is easy to cause shear damage to the piezoelectric rod when the center of gravity of the load is eccentric

Method used

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  • A Symmetrical Differential Lever Micro-displacement Amplifying Device
  • A Symmetrical Differential Lever Micro-displacement Amplifying Device

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] Such as figure 1 and figure 2 As shown, the symmetrical differential lever micro-displacement amplifying device provided in this embodiment includes a base 10, a substrate 20 fixed on the base 10, and a piezoelectric block 30 located on the same plane as the substrate 20. The substrate 20 and the piezoelectric block The plane where 30 is located is parallel to the base 10 , and the fixing method between the base plate 20 and the base 10 can be a conventional method, such as screw fastening, which will not be described in detail here.

[0032] The piezoelectric block 30 has a pressing portion 31 and two transmission portions 32 respectively located at two ends of the pressing portion 31 and placed symmetrically around the center of the vertical line of the pressing portion 31 . The specific shape of the pressing portion 31 can be deter...

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Abstract

Provided in the invention is a symmetric differential-lever micro displacement amplification apparatus comprising a pedestal, a base plate fixed on the pedestal, a piezoelectric block. The piezoelectric block and the substrate are located at the same plane. The piezoelectric block has a top pressing part and two transmission parts that are respectively arranged at the two ends of the top pressing part and are arranged symmetrically by using the midperpendicular of the top pressing part as the center; each of the two transmission parts is respectively connected with one group of lever assemblies located at the same plane as the substrate; and the two lever assemblies are arranged symmetrically by using the midperpendicular of the top pressing part as the center. A piezoelectric ceramic driver abutted against the top pressing part is arranged between the two transmission parts. With the lever assemblies, a large displacement enlargement factor can be realized based on a differential lever amplification principle; and the stroke is also large. Meanwhile, because of connection based on flexible hinging, gaps and friction forces among all levers are small, thereby reducing the error and improving the precision.

Description

technical field [0001] The invention relates to an amplifying device, in particular to a micro-displacement amplifying device of a symmetrical differential lever. Background technique [0002] In recent years, with the development of microelectronics technology, piezoelectric ceramics have been widely used in the field of micro-displacement drive and precision positioning due to their superior precision drive and positioning performance, but their micron-level displacement output often cannot meet the practical application Generally, it is necessary to design a displacement amplification device for displacement amplification. Existing displacement amplifying devices either have high precision or relatively large strokes, and it is often difficult to achieve both high precision and large strokes. [0003] Chinese invention patent application ZL03132498.3 discloses a micro-displacement amplification mechanism, which consists of a mechanism body, piezoelectric ceramics and pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L21/68
CPCH01L21/68
Inventor 范伟占炜李钟慎杨建红陈梅江芳彬
Owner HUAQIAO UNIVERSITY
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