Discharging method for electric corrosion products for electric spark machining
A technology of electric spark and electric erosion, which is applied in the field of discharge of electric discharge machining electric corrosion products, can solve problems such as difficulty in removing electric corrosion products, and achieve the effect of avoiding electrode feed stagnation, preventing short circuit, and improving discharge
Active Publication Date: 2019-01-11
ZHONGBEI UNIV
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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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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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The invention belongs to the technical field of special machining and particularly relates to a discharging method for electric corrosion products for electric spark machining, and the discharging method is used for discharging the electric corrosion products in the electric spark machining process of deep holes, deep grooves, narrow seams and other structures. The method relates to a hydraulic force discharging device, and the device is composed of a hydraulic force box, an outer cone body, an inner cone body and an annular gap. Liquid with pressure flows into the hydraulic force box and flows out of the annular gap; an included angle A formed between the annular gap and the axis of an electrode is an acute angle; and the hydraulic force discharging device can be in one set, two sets or aplurality of sets. The steps of the discharging method for the electric corrosion products includes that firstly, the electrode and the hydraulic force discharging device are machined; secondly, theelectrode, a workpiece and the hydraulic force discharging device are installed; and thirdly, electric spark discharging machining is performed, and the liquid with the pressure flows into and flows out of a discharging device for the electric corrosion products. Due to a method that flowing liquid is externally added, the electric corrosion products of the machining system are discharged in time,blocking is prevented, the size precision of machining and the shape and position precision are guaranteed, and the machining efficiency is improved.
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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IPC IPC(8): B23H1/10B23H9/14
CPCB23H1/10B23H9/14
Inventor 沈兴全于大国
Owner ZHONGBEI UNIV
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