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Electric spark composite machining process in magnetic field

A composite machining and EDM technology, applied in electric machining equipment, metal machining equipment, circuits, etc., can solve the problems of low EDM speed, easy electrode wear, unstable machining, etc., and achieve good machining effect and easy realization. , the effect of low production cost

Inactive Publication Date: 2009-02-04
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The advantage of the magnetic field EDM composite machining process of the present invention is that it solves the problems of low speed in EDM, especially the difficulty of chip removal, unstable machining, and easy loss of electrodes in EDM small hole machining

Method used

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  • Electric spark composite machining process in magnetic field

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0010] Embodiment 1: Process a stainless steel plate with a thickness of 1 mm on a small hole machine, and carry out a comparative test;

[0011] Test conditions: EDM the positive pole of the workpiece, the negative pole of copper with a diameter of 2 mm, the magnetic pole gap is 20 mm, the magnetic field strength is 510 mT electromagnetic field, and the processing medium is tap water.

[0012] Test data: When EDM is performed alone, the maximum processing speed is 0.91 mm per minute, and after magnetic field EDM is combined, the maximum processing speed is 4.055 mm per minute, and the speed is increased by 4.5 times.

Embodiment approach 2

[0013] Embodiment 2: process a stainless steel plate with a thickness of 8.6 millimeters on a small hole machine, and carry out a comparative test;

[0014] Test conditions: EDM the positive pole of the workpiece, the negative pole of copper with a diameter of 2 mm, the magnetic pole gap is 20 mm, the magnetic field strength is 510 mT electromagnetic field, and the processing medium is tap water.

[0015] Test data: When EDM is performed alone, the maximum processing speed is 1.6 mm per minute, and after magnetic field EDM is combined, the maximum processing speed is 7.53 mm per minute, and the speed is increased by 4.6 times.

Embodiment approach 3

[0016] Embodiment 3: Process a 2 mm thick red copper plate on a small hole machine, and conduct a comparative test;

[0017] Test conditions: EDM the positive pole of the workpiece, the negative pole of copper with a diameter of 2 mm, the magnetic pole gap is 20 mm, the magnetic field strength is 510 mT electromagnetic field, and the processing medium is tap water.

[0018] Test data: the maximum processing speed is 7.74 mm per minute when EDM is used alone, and the maximum processing speed after magnetic field EDM is 16.45 mm per minute, and the speed is increased by 2.1 times.

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Abstract

A technology combining magnetic field with electrospark for machining the magnetically nonconductive metallic material includes such steps as designing the magnetic supply unit of electromagnet, connected to the electrode terminals of electrospark machine, debugging and installing, connecting the workpiece to be machined with the positive electrode of pulse power supply, connecting the machining tool to its negative electrode, supplying the running water as its working liquid, optimizing technological parameters, measuring the machining speed and surface roughness, and observing the chip discharging state.

Description

1. Technical field [0001] The magnetic field electric spark composite machining process of the present invention belongs to the technical field of special processing and is suitable for processing non-magnetic metal materials. Specifically, it relates to a process for combining magnetic energy and electric energy. 2. Background technology [0002] With the continuous improvement of the quality of mechanical products, the urgent problem to be solved is to improve the surface quality of parts. Effectively improving parts processing methods plays a very important role in the development, promotion and social economy of new products. With the emergence of new materials and new structures, such as the processing of various difficult-to-cut materials; the processing of various complex surfaces; the processing of various super-finishing, finishing or parts with special requirements. These are difficult to achieve only by traditional cutting methods. In order to solve the above pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23H7/38B23H7/14
Inventor 杨世春曹明让李文辉熊光煜陈红玲
Owner TAIYUAN UNIV OF TECH
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