Device for high-depth-diameter-ratio micro-hole high-speed electrosparking

A depth-to-diameter ratio and electric spark technology, applied in the field of machining and tools, can solve the problems of fast wear of the rotating spindle, electrochemical corrosion of the spindle, and small impact force of the abrasive jet, so as to reduce the wear rate, improve stability, and improve The effect of pressure
CN110560802APending Publication Date: 2019-12-13DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN UNIV OF TECH
Publication Date
2019-12-13

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Abstract

The invention provides a device for high-depth-diameter-ratio micro-hole high-speed electrosparking, and belongs to the field of machining and tools. Through the innovative design of a rotating spindle structure, ceramic and polytetrafluoroethylene materials are ingeniously applied, the problems of serious internal electrochemical corrosion of a spindle, high abrasion rate of a sealing piece and difficult replacement are solved, the rotating precision of the spindle is improved, and the service life of the spindle is prolonged.
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Description

technical field

[0001] The invention relates to a method and device for high-speed electrical discharge machining of microholes with a large depth-to-diameter ratio, and belongs to the field of mechanical processing and tools. Background technique

[0002] Micropores with large aspect ratio are more and more widely used in automobiles, biomedicine, nuclear industry, aviation, aerospace and other fields. When machining holes with traditional machining methods, the cutting environment of the tool is poor, and there are problems such as low rigidity of the tool holder, difficulty in cooling, and difficulty in chip removal. In micro hole processing, when the hole diameter is less than 1mm, traditional machining can hardly be completed. Micro-EDM is non-contact processing. During the processing, the tool electrode does not touch the workpiece, the tool electrode will not be deformed by force, and the micro-EDM is almost not affected by the strength and hardness of the workpiece....

Claims

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