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CBN abrasive wheel having transition layer on its cambered surface and its preparation technology

A circular arc surface and circular arc transition technology, which is applied in the field of CBN grinding wheel and preparation technology, can solve the problems of large grinding force, low grinding efficiency, and large stress of the processed workpiece.

Inactive Publication Date: 2003-03-26
LUOYANG BEARING SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The grinding wheels usually used for grinding the outer ring groove of the bearing are flat ordinary abrasive grinding wheels, that is, grinding wheels of corundum abrasives. This grinding wheel needs to be shaped into a circular arc surface in application, and because of the low hardness of corundum abrasives, its The cutting ability of the grinding blade is poor, the grinding force is large, the temperature of the grinding force is high, the stress of the workpiece is large, and the shape protection of the grinding wheel is poor; therefore, the grinding efficiency is low, the quality is poor, and the grinding wheel needs to be replaced frequently, which is not conducive to the improvement and realization of the bearing quality. Automated manufacturing

Method used

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  • CBN abrasive wheel having transition layer on its cambered surface and its preparation technology
  • CBN abrasive wheel having transition layer on its cambered surface and its preparation technology
  • CBN abrasive wheel having transition layer on its cambered surface and its preparation technology

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Experimental program
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Effect test

Embodiment

[0018] 1. Make a grinding wheel mold. The mold is in the shape of a circular arc. According to the material ratio (weight ratio): CBN120 100; binder 70; filler 140; dextrin 8; water 7.

[0019] 2. Use the sic abrasive according to the following proportions, SiC120 100; binder 50; dextrin 4; water 4.

[0020] Stir the above-mentioned abrasives evenly, sieve, add water to mix, and then mix and sieve to form; when forming, the wear-resistant layer of CBN120 abrasive is added on the arc surface to form an arc transition layer.

[0021] 3. Weigh the mixed CBN material and SiC material according to the above ratio, and then put the CBN abrasive and SiC abrasive into the mold in sequence for forming.

[0022] 4. Dry the formed grinding wheel naturally at a temperature of 120°C, then put it into an electric furnace, and heat it for 3 hours at a firing temperature of 950°C.

[0023] 5. After the fired grinding wheel passes the inspection, it can become a finished product.

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Abstract

The present invention relates to a CNB abrasive wheel and its preparation process. The external surface of said abrasive wheelis made into the form of circular arc surface which is a transition layer made of CBN abrasio-proofing material. Said abrasive wheel is made up by adopting CBN 120 abradant, and adding binder and filling agent through the processes of mixing, stirring uniformly, seiving and forming. Its composition includes (by weight ratio) CBN 120 100, binder 60-80, filling material 140, dextrin 8 and water 7; and SiC 120 100, binder 50, dextrin 4 and water 4.

Description

Technical field: [0001] The invention belongs to grinding tools and adjustment of grinding tools, in particular to a CBN grinding wheel with a transition layer on a circular arc surface and a preparation process thereof. Background technique: [0002] The grinding wheels usually used for grinding the outer ring groove of the bearing are flat ordinary abrasive grinding wheels, that is, grinding wheels of corundum abrasives. This grinding wheel needs to be shaped into a circular arc surface in application, and because of the low hardness of corundum abrasives, its The cutting ability of the grinding blade is poor, the grinding force is large, the temperature of the grinding force is high, the stress of the workpiece is large, and the shape protection of the grinding wheel is poor; therefore, the grinding efficiency is low, the quality is poor, and the grinding wheel needs to be replaced frequently, which is not conducive to the improvement and realization of the bearing quality...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/14B24D7/00B24D18/00
Inventor 张锐吴宗彦丁海善王世锋
Owner LUOYANG BEARING SCI & TECH CO LTD