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Bipolar grinding wheel electric spark grinding machining device and method suitable for insulating hard and brittle materials

A grinding technology for hard and brittle materials, which is applied in the field of special processing, can solve the problems of difficult-to-machine insulating hard and brittle materials, and achieve the effect of simple structure and stable work

Pending Publication Date: 2022-02-08
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] EDM relies on the spark discharge between the two poles to remove the workpiece material, and the two pole materials are required to have conductivity. Therefore, it is difficult to process insulating hard and brittle materials by conventional EDM methods.

Method used

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  • Bipolar grinding wheel electric spark grinding machining device and method suitable for insulating hard and brittle materials
  • Bipolar grinding wheel electric spark grinding machining device and method suitable for insulating hard and brittle materials

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Embodiment 1

[0044] Such as figure 1 As shown, an EDM processing device suitable for bipolar grinding wheels for insulating hard and brittle materials includes a bipolar grinding wheel, a power supply 4 , workpieces to be processed 5 , a numerical control system 7 , and a workbench 6 . Place the workpiece 5 to be processed on the workbench 6, connect the workbench 6 to the numerical control system 7, and adjust the position of the workbench 6 through the numerical control system 7, so that the workpiece 5 to be processed is located directly in front of the bipolar grinding wheel. The power supply 4 is a pulse power supply for EDM.

[0045] Such as figure 2 As shown, the bipolar grinding wheel is composed of polar grinding wheel I1, polar grinding wheel II2 and insulating medium layer 3. The polar grinding wheel I1 and the polar grinding wheel II2 are fixed together by an insulating medium layer 3 to form a bipolar grinding wheel. The polar grinding wheel I1 is connected to the negative...

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Abstract

The invention provides a bipolar grinding wheel electric spark grinding machining device and method suitable for insulating hard and brittle materials. The device comprises a bipolar grinding wheel, an insulating medium layer, a power source, a workpiece to be machined, a numerical control system and a workbench. The invention further discloses a machining method using the device, and the machining method comprises the steps that the bipolar grinding wheel is installed, the two polar grinding wheels in the bipolar grinding wheel are connected to the positive electrode and the negative electrode of the power source respectively, and the workpiece to be machined is placed on the workbench; during machining, discharge parameters are set, spark discharge is generated at the edge of the bipolar grinding wheel, a large amount of heat is released, and under the effect of high temperature and explosive force, a material is stripped off the surface of a to-be-machined workpiece base body, so that the material is removed. Meanwhile, a carbonization layer generated by discharging is removed by means of the physical grinding effect of the grinding wheel. The device is simple in structure, stable in work and suitable for the field of machining.

Description

technical field [0001] The invention relates to the technical field of special processing, in particular to an electric spark grinding device and method suitable for bipolar grinding wheels of insulating hard and brittle materials. Background technique [0002] Common insulating hard and brittle materials such as optical fibers and engineering ceramics are widely used in many fields including aerospace, communication engineering, chemical industry, metallurgy, etc. due to their excellent properties such as good wear resistance, heat resistance, and hardness. However, these materials are highly brittle, and traditional mechanical processing methods have relatively high stress, which makes the materials easy to break or produce cracks. [0003] In recent years, many scholars have begun to study the EDM technology of insulating hard and brittle materials. At present, the widely used EDM methods for insulating hard and brittle materials are mainly electrolytic EDM technology an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H5/04
CPCB23H5/04
Inventor 张文超张尧李姝赵秀君王明伟
Owner DALIAN POLYTECHNIC UNIVERSITY
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