Non-conducting material spark milling electrode tip

Abstract

The invention relates to an electric spark planing electrode head of a non-conductive material, which belongs to the field of mechanical processing. It includes negative tool electrode (2), negative tool electrode guide plate (3), driving wheel (4), DC servo motor (12) and its shaft (5), insulating partition (6), positive tool electrode upper guide plate (7), lower guide plate (10), driving wheel (9), DC servo motor (13) and its shaft (8), tool electrode (11). During processing, the positive and negative tool electrodes are respectively connected to the positive and negative poles of the pulse power supply, and are fed to the surface of the non-conductive workpiece under the rotating friction of the respective driving wheels. The lower ends of the positive and negative tool electrodes are on the surface of the non-conductive workpiece. Spark discharge is generated on the surface to form a discharge channel. The high temperature and high pressure generated when the discharge channel flows through the surface of the non-conductive material is used for EDM planing. It has the advantages of simple structure and high efficiency when processing non-conductive and difficult-to-machine materials.

Description

technical field [0001] The invention belongs to the field of mechanical processing and relates to an electric spark planing electrode head of non-conductive material. Background technique [0002] At present, the electrical machining methods of non-conductive materials studied by scholars at home and abroad mainly include: high-voltage EDM, auxiliary electrode machining, electrolytic EDM composite machining and other methods. [0003] High-voltage electric discharge machining is to put an insulating workpiece between the pointed electrode and the flat electrode, and apply a DC or power frequency AC high voltage between the two electrodes, so that the air near the pointed electrode is broken down, and glow discharge erosion occurs. The method can only process shallow holes, and the surface of the processed holes is rough. The auxiliary electrode EDM method places a metal sheet or metal mesh on the surface of the non-conductive material in advance as the auxiliary electrode. ...

AI Technical Summary

Problems solved by technology

This processing method has problems such as low efficiency, high energy consumption, low processing accuracy, poor surface quality, and harmful electrolytic gas is emitted during processing, and the processing environment is poor.

[0004] At present, there is no literature report on the EDM planing technology of non-conductive materials and its devices at home and abroad.

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