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Discharge method of electro-corrosion products in EDM

A technology of electric spark and electric erosion, which is applied in the field of discharge of electric discharge products in electric discharge machining, can solve problems such as difficulty in removing electric corrosion products, and achieve the effects of avoiding electrode feed stagnation, preventing deflection, and improving discharge

Active Publication Date: 2021-02-19
ZHONGBEI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Purpose of the present invention: To solve the problem of difficult removal of electric erosion products in the process of electric discharge machining of deep holes, deep grooves and narrow slots, to design a method for discharging electric erosion products in electric discharge machining, so as to improve processing efficiency and quality

Method used

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  • Discharge method of electro-corrosion products in EDM

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Experimental program
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Effect test

Embodiment approach 1

[0021] Embodiment 1: At the beginning of the processing process, liquid with pressure is input into the hydraulic tank 4 to fill the semi-closed space. The liquid flows out from the annular gap 8 and mixes with the working liquid to take away the electrolytic corrosion products .

Embodiment approach 2

[0022] Embodiment 2: At the beginning of the processing process, no pressurized liquid is input into the hydraulic tank 4 . When it is difficult to discharge the electro-corrosion products during the processing, the liquid with pressure is input into the hydraulic tank 4, and the additional fluid is used to help discharge the electro-corrosion products.

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Abstract

The invention belongs to the technical field of special processing, and in particular relates to a method for discharging electro-corrosion products of electric discharge machining, which is used for timely removing the electro-corrosion products of structures such as deep holes, deep grooves, and narrow seams during the electro-discharge processing process. The present invention includes hydraulic discharge equipment, which is composed of a hydraulic box, an outer cone, an inner cone, and an annular gap. The liquid with pressure flows into the hydraulic tank and flows out from the annular gap; the angle A formed by the annular gap and the axis of the electrode is an acute angle; the hydraulic discharge equipment can be one set, two sets or multiple sets. The steps of the electro-corrosion product discharge method include: the first step, processing electrodes and hydraulic discharge equipment; the second step, installing electrodes, workpieces, and hydraulic discharge equipment; the third step, EDM, and the liquid with pressure flowing into And outflow electro-corrosion product discharge equipment. The invention removes the electric corrosion products of the processing system in time through the method of adding flowing liquid, prevents clogging, ensures the dimensional accuracy and shape position accuracy of processing, and improves the processing efficiency.

Description

technical field [0001] The invention belongs to the technical field of special processing, and in particular relates to a method for discharging electric erosion products in electric discharge machining. Background technique [0002] In EDM, the spark discharge between the workpiece and the tool is pulsed, and the metal is corroded by the local and instantaneous high temperature generated by the EDM. Therefore, electric discharge machining is also called "electric erosion machining". The practical application of EDM in the field of mechanical product manufacturing is becoming more and more extensive. For example, it can be used to drill cylindrical holes, square holes, hexagonal holes, narrow seams, etc. in hardened steel or difficult-to-machine materials. [0003] EDM technology has special advantages because of its non-contact, no macro cutting force, low requirements on tool strength and rigidity, and wide application range of materials. But this method has its own disa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23H1/10B23H9/14
CPCB23H1/10B23H9/14
Inventor 沈兴全于大国
Owner ZHONGBEI UNIV