Flexible hinge based piezoelectric driving three-jaw bionic microsized clamping mechanism

A technology of flexible hinges and clamping mechanisms, applied in non-electrical variable control, using stable tension/pressure to test material strength, strength characteristics, etc., can solve difficult mechanical properties, micro-sized specimens are not easy to clamp, research, etc. problems, to avoid damage or falling off, improve service reliability, and have the effect of exquisite structure

Active Publication Date: 2017-11-07
JILIN UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a piezoelectric-driven three-jaw bionic micro-size clamping mechanism based on flexible hinges, which solves the

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  • Flexible hinge based piezoelectric driving three-jaw bionic microsized clamping mechanism
  • Flexible hinge based piezoelectric driving three-jaw bionic microsized clamping mechanism
  • Flexible hinge based piezoelectric driving three-jaw bionic microsized clamping mechanism

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Embodiment Construction

[0029] The detailed content of the present invention and its specific implementation will be further described below in conjunction with the accompanying drawings.

[0030] see Figure 1 to Figure 7 As shown, the flexible hinge-based piezoelectric-driven three-jaw bionic micro-sized clamping mechanism of the present invention includes a piezoelectric loading unit, a flexible hinge transmission unit, a bionic clamping unit, a clamping force detection unit, a high-temperature loading unit, and a Disassemble the support unit, the flexible hinge base 5 is processed with regular grooves, which match the size of the multi-load packaged piezoelectric stack 1, and the multi-load packaged piezoelectric stack 1 is embedded in the groove of the flexible hinge base 5 , and is preloaded through a preload block 2 with adjustable thickness, so as to ensure that the multi-load encapsulated piezoelectric stack 1 bears the compressive load. The piezoelectric stack driver outputs voltage to the ...

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Abstract

The invention relates to a flexible hinge based piezoelectric driving three-jaw bionic microsized clamping mechanism, and belongs to the field of precision driving and material micro-mechanical property in-situ tests. Three built-in encapsulated type piezoelectric stacked multi-load piezoelectric drivers are in a 120-degree internal enveloping ring distribution installation form, by means of lower layer flexible hinge sliding pair in plane expansion and motion transmission taking an inner layer fulcrum as a revolute pair movement center, claw toe clamping ends adopt a biological nonsmooth mechanism and soil animal claw toe configuration, the clamping frictional force is increased, and the microsized component clamping problem can be solved; in addition, a micro clamping mechanism can be combined with a combined support unit and a high-temperature loading unit, uniaxial and biaxial force fields which are controllable in displacement under the high-temperature service condition are built, and the microsized component uniaxial and biaxial mechanical property test function is achieved. The mechanism is compact in structure, wide in application range and capable of being combined with a scanning electron microscope for use, and an effective tool is provided for mechanical property test and representation of microsized materials such as carbon fiber.

Description

technical field [0001] The present invention relates to the fields of precision driving and in-situ testing of the micromechanical properties of materials, in particular to instruments and meters in the field of micro-electromechanical systems, especially to a piezoelectric-driven three-claw bionic micro-size clamping mechanism based on flexible hinges, which is used for Clamping and testing of micro-sized materials with a characteristic size diameter below 0.1mm. The present invention can be used compatible with imaging instruments such as scanning electron microscopes to perform in-situ detection on the tested piece under the mechanical state of uniaxial tensile stress and biaxial tensile stress, and to reveal the deformation damage mechanism and performance of micro-sized materials such as carbon fibers. The evolution law provides an effective means to provide testing equipment for material characterization and in-depth understanding of material mechanical properties. Bac...

Claims

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Application Information

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IPC IPC(8): G01N3/04G01N3/18G01L1/22G05D15/01
CPCG05D15/01G01L1/22G01N3/04G01N3/18G01N2203/0075G01N2203/0482G01N2203/0252G01N2203/0254G01N2203/0017
Inventor 马志超马筱溪赵宏伟任露泉张志辉杜希杰徐博达蒋东颖
Owner JILIN UNIV
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