Electrodischarge machining method for working non-conductive ceramic utilizing conductive magnetic powder

An electrical discharge machining, non-conductive technology, used in electric machining equipment, metal machining equipment, manufacturing tools, etc., can solve the problems of cumbersome production of auxiliary conductive films, not easy to short pulse width, unstable discharge, etc., to expand the scope of processing, Improve the effect of unstable discharge and convenient replacement of workpieces

Inactive Publication Date: 2006-05-24
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

However, in the actual processing process, due to the uneven adsorption between the natural "generated conductive film" and the ceramic surface (the thickness is not uniform), the bonding performance is poor, it is easy to peel off during processing, and the thickness is naturally formed and cannot be adjusted, resulting in frequent discharge. Stable, the processing depth is relatively shallow, and it is mainly used under the condition of long pulse width, and it is

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  • Electrodischarge machining method for working non-conductive ceramic utilizing conductive magnetic powder

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Embodiment Construction

[0017] The following examples are provided in conjunction with the content of the method of the present invention, and the specific steps are as follows:

[0018] (1) if figure 1 As shown, the electromagnet device of the present embodiment adopts a circular electromagnet and an electromagnet on-off controller (requirement: when the electrode lifts the knife, the electromagnet is powered off; when the electrode descends, the electromagnet is energized. Electromagnet shape: circular);

[0019] (2) Install copper electrodes for processing on the main shaft of the electric discharge machine (Taiwan large amount of electronic equipment Co., Ltd. produces electric discharge machine troop pnc), with a diameter of 5*50mm and connected to the cathode;

[0020] (3) Place an electromagnet on the workbench of the EDM, the input end of the on-off controller of the electromagnet is connected with the control end of the lifting tool of the control cabinet of the EDM, the output end is connec...

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Abstract

The electro-discharge machine method for preparing nonconducting ceramics by utilizing conductive magnetic powder includes the following steps: (1) placing electromagnetic iron device on working table of electro-discharge machining machine, form of electromagnetic iron is identical to that of workpiece; (2) on the electromagnetic iron mounting and holding nonconducting ceramics; (3) on said ceramics surface spreading conductive magnetic powder; (4) using conductive magnetic powder as one end of electrode and making it and metal electrode be formed into electrode pair; (5) switching on the power supply of electromagnetic iron, the conductive magnetic powder can be adsorbed on the ceramics surface; (6) setting main electro-discharge machining parameter; and (7) making electro-discharge machining process.

Description

technical field [0001] The invention relates to a processing method in the technical field of special processing, in particular to a discharge processing method for processing non-conductive ceramics by using conductive electromagnetic powder. Background technique [0002] Discharge machining must be a thermal processing method that can only be carried out under the condition that both electrodes are electrically conductive. Since non-conductive ceramics do not have conductivity, they cannot be directly used as one of the electrode pairs for EDM. To carry out electrical discharge machining on it, the surface of the processed non-conductive ceramic workpiece must be equipped with the conditions for electrical discharge machining. Through previous studies, there are currently electric discharge machining methods for processing insulating ceramic materials. The method is to prepare a conductive film (or sheet) on the surface of the non-conductive ceramic to form a conductive ...

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Application Information

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IPC IPC(8): B23H1/00B23H7/38B23H11/00C04B41/91
Inventor 郭常宁裴景玉潘安安
Owner SHANGHAI JIAO TONG UNIV
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