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A kind of flexible amplification mechanism

An amplifying mechanism and flexible technology, applied in the field of flexible transmission, can solve problems such as direct drive structure and single-stage amplifying mechanism that are difficult to realize

Active Publication Date: 2020-08-25
BEIJING INST OF RADIO MEASUREMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is difficult to achieve for direct-drive structures and single-stage amplification mechanisms

Method used

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  • A kind of flexible amplification mechanism
  • A kind of flexible amplification mechanism
  • A kind of flexible amplification mechanism

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Embodiment Construction

[0029] In order to make the technical solutions and advantages of the embodiments of the present application clearer, the exemplary embodiments of the present application are described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and Not all examples are exhaustive. It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other if there is no conflict.

[0030] The core idea of ​​this scheme is to use two elliptical magnifying structures to cooperate with each other to amplify the total displacement. On this basis, the symmetry of the structure is maintained, the deformation transmission movement is more stable, and the parasitic movement is eliminated.

[0031] Such as figure 1 As shown, this example discloses a flexible magnification mechanism, which can achieve a magnification of up to 20 times...

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Abstract

The embodiment of the invention provides a flexible amplification mechanism. The mechanism comprises a primary amplification structure and a secondary amplification structure, wherein the secondary amplification structure is arranged at a middle part of the primary amplification structure and is arranged in perpendicular to the primary amplification structure, and a piezoelectric ceramic stack isarranged between the primary amplification structure and the secondary amplification structure. With the flexible amplification mechanism provided by technical scheme, the parasitic motion is eliminated as well as the motion is transferred by deformation of a symmetrically-arranged flexible structure; and with the adoption of the two-stage amplification structure, the rate of the total displacement can be amplified by twenty times. The flexible amplification mechanism provided by the scheme is simple in structure, the equipment loss caused by mechanical friction can be prevented, the flexibleamplification mechanism is not needed to be lubricated, and the maintenance cost is reduced.

Description

Technical field [0001] This application relates to the field of flexible transmission, and in particular to a high-precision and frictionless flexible micro-amplification mechanism based on material deformation. Background technique [0002] Traditional mechanical structures are mostly rigid mechanisms, while everything in nature is rigid and flexible. The rigid mechanism has stable structure and simple control, which can satisfy most engineering applications. However, rigid transmission is limited by the inherent errors of the transmission chain, such as motor reducer air-return error, gear backlash error, and error caused by friction, making it unable to achieve the micron or even nanometer resolution required by the fine positioning system. Micro-nano positioning can be realized by loading nano-scale piezoelectric ceramic actuators in the transmission process of the flexible mechanism. However, although the piezoelectric actuator has high precision, the disadvantage is that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/04
CPCH02N2/043
Inventor 耿金鹏
Owner BEIJING INST OF RADIO MEASUREMENT