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Reversed alignment electrochemical discharge machining method and device

A discharge machining and electrochemical technology, which is applied in the field of inverted electrochemical discharge machining and devices, can solve the problems such as the difficulty in updating the electrolyte solution and the difficulty in processing depth exceeding 500 μm, and achieve stable spark discharge machining state, increased depth, and increased stability Effect

Inactive Publication Date: 2012-07-04
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

However, when the processing exceeds a certain depth (about 300 μm), the processing speed of electrochemical discharge machining (ECDM) drops to a few microns per second or even stops, and the processing depth is difficult to exceed 500 μm
The main reason for this situation is that as the depth of electrochemical discharge machining (ECDM) increases, the renewal of the electrolyte solution between the electrode end and the workpiece becomes difficult, and the bubbles generated by the electrolytic reaction play a role in the buoyancy It is difficult to form a stable gas film at the end of the tool electrode

Method used

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  • Reversed alignment electrochemical discharge machining method and device
  • Reversed alignment electrochemical discharge machining method and device
  • Reversed alignment electrochemical discharge machining method and device

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Embodiment Construction

[0028] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0029] Such as Figure 1As shown, this embodiment includes an electrode chuck 1, a tool electrode 2, a workpiece 3, a workpiece holder 4, an auxiliary electrode 5, a power supply 6, a feeding device 7, a working tank 8, an electrolyte solution 9, an air film and air bubbles 10, and processing chips 11. The tool electrode 2 is connected to the negative pole of the power supply, and the auxiliary electrode 5 is connected to the positive pole of the power supply. The tool electrode 2 and the workpiece 3 are immersed in sodium hydroxide (NaOH) solution at the same time, ...

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Abstract

The invention provides a reversed alignment electrochemical discharge machining (RA-ECDM) method in the field of special machining. A tool electrode is arranged below a workpiece. The tool electrode is fixed on the bottom surface of a work slot by an electrode holder and is soaked in electrolyte solution. The workpiece is connected with a feeding device of a machine tool. The feed motion in the machining process is implemented by feeding of the workpiece. The invention also provides a corresponding device. According to the invention, by changing the relative positions between the tool electrode and the workpiece, machining scraps generated in the machining process can be easily discharged under the action of gravity, so that the flowing capacity of electrolyte in a machining process in the machining process is reinforced. Moreover, due to the adoption of the reversed layout, air bubbles generated in the electrolytic reaction can be concentrated around the end part of the electrode below the machined workpiece to form a stable air film, so that the stability and the machining depth of the ECDM are effectively improved.

Description

technical field [0001] The invention relates to a technical method for micromachining non-conductive brittle materials in the field of special processing, specifically a method for processing non-conductive brittle materials by combining electrochemical technology and electric spark technology and utilizing heat energy and chemical corrosion generated by spark discharge of a new method. Background technique [0002] In recent years, non-conductive brittle materials such as various glasses and ceramics have been widely used. Glass materials have the characteristics of chemical corrosion resistance, transparency, low conductivity and good biocompatibility, so they are used in micro-accelerators, micro-reactors, micro-pumps, medical devices and optical systems; ceramic materials have high strength, Excellent properties such as high hardness, high temperature resistance, wear resistance, corrosion resistance, and good insulation have increasingly shown broad application prospec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H5/02B23H7/26
Inventor 赵万生康小明吴杰朱敬文
Owner SHANGHAI JIAO TONG UNIV
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