A magnetostrictive shrapnel-type microgripper driven by galfenol flakes

Abstract

The invention discloses a magnetostrictive shrapnel type micro-clamp driven by a Galfenol sheet, which comprises a pliers body, one end of the pliers body is closed, the other end is open, and a coil is wound outside the pliers body; The shrapnel is arranged oppositely, one end of the shrapnel is connected with the closed end face of the caliper body, and the other end of the shrapnel extends out of the opening end of the pliers body; two supporting pieces perpendicular to the shrapnel are arranged at the opening end of the pliers body, and one end of the supporting piece is connected to the shrapnel. The outer surface of the pliers is connected, and the other end of the support piece is connected with the inner wall of the caliper body; the Galfenol sheet is pasted on the outer surface of the shrapnel located inside the pliers body, and the maximum magnetostrictive direction of the Galfenol sheet is consistent with the length direction of the shrapnel. The invention utilizes the deformation of the Galfenol sheet in the magnetic field to drive the bending deformation of the shrapnel to realize clamping, the clamping range is large, the deformation precision is high, the driving voltage is low, and the reliability is good.

Description

technical field [0001] The invention relates to the field of micro-drive technology, in particular to a magnetostrictive shrapnel type micro-clamp driven by a Galfenol sheet. Background technique [0002] The micro gripper is the key actuator in the micro-operating system, which converts other forms of energy into mechanical energy, and generates the required clamping action and clamping force. As a typical micro-actuator, micro-clamps have shown wide application prospects in the fields of micro-parts processing, assembly, biomedical engineering and optics. [0003] Piezoelectric ceramic material is a material widely used in the field of micro-actuators. Using the inverse piezoelectric effect of piezoelectric ceramics, it can easily achieve precise position control and make micro-motion clamps. For example, Cai Jianhua wrote in his paper " A micro-gripper driven by piezoelectric bimorphs was proposed in "Research on New Micro-gripper Technology". Although piezoelectric-dri...

AI Technical Summary

Problems solved by technology

Although the deformation resolution of the piezoelectric-driven microgripper is high, the response is fast, it is not sensitive to temperature, and the operating frequency is wide, but at the same time, its driving voltage is high, the deformation is small, and it is difficult to be compatible with the semiconductor process.

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