Magnetostrictive spring plate type micro gripper driven by Galfenol slices

Abstract

The invention discloses a magnetostrictive spring plate type micro gripper driven by Galfenol slices. The magnetostrictive spring plate type micro gripper comprises a gripper body; one end of the gripper body is enclosed and the other end is open; and a coil winds around the outside of the gripper body. Two flat spring plates opposite to each other are arranged inside the gripper body; one end of each spring plate is connected with the enclosed end surface of the gripper body and the other end of the spring plate extends out of the opening end of the gripper body. Two support plates perpendicular to the spring plates are arranged at the opening end of the gripper body; and one end of each support plate is connected with the outer side of one spring plate and the other end of the support plate is connected with the inner wall of the gripper body. Galfenol slices are pasted to the outer sides, arranged inside the gripper body, of the spring plates, wherein the maximum magnetostrictive directions of the Galfenol slices are consistent with the length directions of the spring plates. According to the invention, with deformation of the Galfenol slices in the magnetic field, the spring plates are driven to be bent and deformed to realize clamping. The clamping range is large, the deformation precision is high, the driving voltage is low, and the reliability is high.

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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