Micro-groove electric discharge machining tool electrode and preparation method thereof

Abstract

The invention discloses a micro-groove electrical discharge machining tool electrode and a preparation method thereof. The micro-groove electrical discharge machining tool electrode comprises two surface conducting layers, multiple low-resistivity conducting layers and multiple high-resistivity conducting layers, wherein the surface conducting layers, the low-resistivity conducting layers and the high-resistivity conducting layers are overlapped and attached to be connected, and the thickness end face after attaching is a machining surface; the two surface conducting layers are located on two side walls of the overlapped low-resistivity conducting layers and high-resistivity conducting layers correspondingly; the low-resistivity conducting layers and the high-resistivity conducting layers are arranged alternately; and the high-resistivity conducting layers are arranged on the interiors of the two surface conducting layers in an attached mode correspondingly. Each low-resistivity conducting layer is wrapped two high-resistivity conducting layers. The rigidity of the micro-groove electrical discharge machining tool electrode is improved, and loss of the high-resistivity conducting layers is much higher than loss of the low-resistivity conducting layers, so that the low-resistivity conducting layers are kept at an enough length all the time, the self-finishing capacity is achieved, and the service life is longer.

Description

technical field [0001] The invention relates to the field of electric discharge tool electrodes, in particular to a micro-groove electric discharge machining tool electrode and a preparation method thereof. Background technique [0002] Surface microgrooves are microstructures widely used in the fields of photovoltaic products, biochemical products, and electronic products. At present, microgrinding, microcutting, and micro-EDM are mainly used to prepare surface microgrooves. However, micro-grinding, micro-cutting and micro-EDM tools will all wear out, need to be trimmed in time, and it is difficult to process for a long time, and micro-cutting is not suitable for high-strength and high-hardness materials; on the other hand, for large aspect ratio Micro grooves, tool stiffness, stability, etc. are important factors affecting processing quality, and the above-mentioned technologies all have problems with tool stiffness and / or stability. Therefore, how to solve the above diff...

AI Technical Summary

Problems solved by technology

However, micro-grinding, micro-cutting and micro-EDM tools will all wear out and need to be trimmed in time, which is difficult to process for a long time, and micro-cutting is not suitable for high-strength and high-hardness materials; on the other hand, for large aspect ratio Micro grooves, tool stiffness, stability, etc. are important factors affecting processing quality, and the above technologies all have problems with tool stiffness and / or stability

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