Magnetostriction type jiggle clamp

Abstract

The invention relates to a magnetostriction type jiggle clamp, which comprises an upper jaw (1) and a lower jaw (2). The front ends of the upper jaw and the lower jaw are provided with a clamp mouth (3); the jiggle clamp also comprises an upper cantilever (4), a lower cantilever (5), a connecting arm (6), an ultra-magnetostriction material bar (7) and a solenoid coil (8) used for providing a magnetic field for the ultra-magnetostriction material bar; the upper cantilever and the lower cantilever are connected through the connecting arm, the tail ends of the upper jaw and the lower jaw are connected with one end of the upper cantilever, and a flexible hinge for the lower jaw to rotate to the direction of the upper jaw is arranged between the lower jaw and the upper cantilever; the ultra-magnetostriction material bar is propped between the lower jaw and the lower cantilever; and the lower jaw, the upper cantilever, the lower cantilever and the connecting arm are made of magnetic conducting materials. The magnetostriction type jiggle clamp of the invention has the advantages of large clamping range, large clamping force, high response speed, and easy control for precision.

Description

technical field [0001] The present invention relates to clamps, particularly micro-action clamps. Background technique [0002] The rapid development of micro-electromechanical engineering, optical engineering, biomedical engineering and other fields urgently requires micro-actuators that can operate in sub-millimeter and micron-scale spaces. The micro-action clamp is an important actuator in the micro-actuator, which can be used to complete the actions of clamping, moving and assembling tiny objects, and plays an important role in micro-assembly and micro-operation. [0003] At present, the widely used micro-action clamps are classified according to their driving methods, and mainly include the following types: [0004] 1. Electrostatically driven microgripper [0005] The literature [IEEE International Conference on Robotics and Automation, 1994, Vol.1: 820-825] introduces a typical electrostatically driven micro-clamp, which generates electrostatic force from two parall...

AI Technical Summary

Problems solved by technology

[0006] The disadvantage of electrostatically driven micro clamps is that the electrostatic force decreases with the increase of the distance between parallel plates, so the displacement of the jaws is small, the output clamping force is small, and it is not easy to control

[0009] The disadvantages of thermally driven micro-clamps are: due to the complicated manufacturing process of the electrothermally driven part, and the low response frequency of the electrothermally driven

[0012] The disadvantages of piezoelectrically driven micro-action clamps are: small jaw displacement and high driving voltage

[0015] The defect of shape memory alloy micro-clamps is that the sensitivity is poor due to the step change of its deformation.

[0016] In summary, the current micro-action clamps have certain problems in terms of clamping range, clamping force, response speed, and precision control. Therefore, the existing micro-action clamps are not ideal.

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