A Tensioning Fixture for Ultrathin Wire Electrodes with Piezoelectric Effect Components

Abstract

The invention discloses an ultra-thin wire electrode tensioning clamp with a piezoelectric effect part. The ultra-thin wire electrode tensioning clamp comprises an upper clamp body and a lower clamp body, one end of a wire electrode is fixedly connected with a first threaded hole in the upper surface of the upper clamp body through a gasket and a bolt in a cooperative mode, the other end of the wire electrode is arranged in sequence along the side face of the upper clamp body, a rectangular notch, a wire electrode limiting groove and the side face of the lower clamp body, and is fixedly connected with a second threaded hole in the side face of the upper clamp body through a gasket and a bolt in a cooperative mode, and the two ends of the upper clamp body are connected into a voltage inputsystem. According to the ultra-thin wire electrode tensioning clamp, external electric fields which are the same as the self-polarization of the upper clamp body are added at the two ends of the upperclamp body with the piezoelectric effect, the material of the upper clamp body is stretched in the polarization direction to drive the wire electrode to stretch, and tensioning of the ultra-thin wireelectrode is achieved; and according to the method, tensioning of the ultra-thin wire electrode can be controlled through the voltage of the added external electric fields, the precision is controlled to be high or low according to the high-low precision of the inverse piezoelectric strain coefficient of a selected piezoelectric material and the size of the added external electric fields, and thetensioning precision can reach the micron-scale and even higher.

Description

technical field [0001] The invention relates to an ultra-thin wire electrode tensioning fixture with piezoelectric effect components, which belongs to the technical field of micro-electrolytic processing. Background technique [0002] Electrolytic wire cutting technology is developed from traditional electrolytic machining. It is a micro-precision electrolytic machining technology that uses metal wires as tool cathodes and removes workpiece materials based on the principle of electrochemical anodic dissolution. Compared with the traditional electrolytic machining, the most significant advantage of this machining method is that the manufacture of the tool cathode is simpler, and it also has many advantages of the traditional electrolytic machining, such as no stress in machining, no deformation of the workpiece, no cold hardening layer on the surface, and no hot reheating. cast layer, etc., which are not limited by the mechanical properties of the workpiece material, and are ...

AI Technical Summary

Problems solved by technology

At present, there is no fixture that can tension the wire electrode during processing, but the phenomenon of wire electrode relaxation during processing is obvious. If the processing is stopped, loading and unloading parts will tension the wire electrode again, which is not only cumbersome, but also inefficient. If the wire electrode relaxation is not detected in time, it will seriously affect the quality of the machined feature surface

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