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Cathode device suitable for high speed on line electrolysis grinding

A cathode and sharpening technology, which is applied to the parts of grinding machine tools, abrasive surface adjustment devices, grinding/polishing equipment, etc., can solve problems such as insufficient electrolyte supply, insufficient liquid supply, and decreased sharpening efficiency and effect. Achieve the effect of improving the grinding surface quality of the workpiece and reducing the grinding force

Inactive Publication Date: 2006-06-14
HUNAN UNIV
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Problems solved by technology

However, recent reports have shown that the continuity and high efficiency of ELID grinding can only be achieved at a low speed of 20m / s. When the surface speed of the grinding wheel exceeds 20m / s, the sharpening efficiency and effect drop sharply, and point out that It is caused by insufficient supply of electrolyte in the sharpening area
The reason for insufficient liquid supply is: when the grinding wheel rotates at a high speed, a layer of high-pressure air boundary layer, that is, an air flow field, is formed on the surface of the grinding wheel, which makes it difficult for the electrolyte to enter the sharpening area effectively, resulting in insufficient liquid supply

Method used

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  • Cathode device suitable for high speed on line electrolysis grinding
  • Cathode device suitable for high speed on line electrolysis grinding

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Embodiment Construction

[0031] According to Figure 1, figure 2 With the cathode device of the present invention of the above-mentioned structure, the cathode body 4 is made of brass, and the length of its sharpening area (cathode cavity) accounts for one-third of the circumference of the grinding wheel, and the outlets of the electrolyte are evenly distributed in the circle Three axial bar holes in the arc section.

[0032] The cathode device of the present invention operates on a 150m / s high-speed grinding test bench of the National High Efficiency Grinding Engineering Technology Research Center of Hunan University.

[0033] (1) High-speed ELID grinding test device:

[0034] 1. Power supply: high-frequency DC pulse power supply, the voltage is 60V, 90V, and 120V, the maximum peak current is 20A, the high level is 1-100μs, the low level is 1-100μs, and the voltage limiting resistance is 18Ω;

[0035] 2. Electrolyte: self-made special grinding fluid for ELID;

[0036] 3. Closed brass cathode system...

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Abstract

A cathode device for the in-line high-speed electrolytic grinding for sharpening has a cathode cavity with terminal and insulating cover on its top, electrolyte feeding inlet, and the lower open arc part which is composed of 3 strip holes, front and back baffle plates, and a flexible shielding plate with an open slot. It can generate a continuous and compact oxidized film on the surface of abrasive disc.

Description

technical field [0001] The invention relates to a cathode device suitable for high-speed on-line electrolytic sharpening and grinding. Background technique [0002] In the high-efficiency grinding and precision grinding of hard, brittle and difficult-to-machine materials, metal-bonded superabrasive abrasive wheels play an important role. However, metal bonded superabrasive grinding wheels have poor self-sharpening, are easy to clog, and are prone to generate excitation force caused by the eccentricity of the grinding wheel during grinding, thus affecting the stability of the grinding process and the quality of the grinding surface. For this reason, Grinding wheels need to be sharpened periodically. Due to its hard bond, it brings great difficulties to sharpening the grinding wheel, which has the characteristics of long sharpening time, high difficulty and low efficiency. Since the concept of ELID (Electrolytic In-process Dressing, or "On-line Electrolytic Dressing") grindi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B1/00B24B53/04
Inventor 盛晓敏尚振涛宓海青王树启吴耀谢桂芝易了
Owner HUNAN UNIV
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