On-line sharpening method for spraying strong oxidizing grinding fluid to surface of superhard abrasive particle metallic bonding agent grinding wheel

Abstract

The invention discloses an on-line sharpening method for spraying strong oxidizing grinding fluid to the surface of a superhard abrasive particle metallic bonding agent grinding wheel. The on-line sharpening method comprises the steps that after grinding fluid is prepared, polishing fluid is added into a grinding fluid tank in an external grinding fluid circulating system of a grinding machine, the grinding fluid is injected into a mixing tank through a vane pump, the grinding fluid in the mixing tank can be mixed with an oxidizing agent, the oxidizing agent is formed by mixing ozone and thiosulfate, the thiosulfate promotes the ozone to quickly generate hydroxyl radicals, the hydroxyl radicals are mixed in the grinding fluid to form strong oxidizing grinding fluid, then the strong oxidizing grinding fluid is sprayed on the surface of the superhard abrasive particle metal bonding agent grinding wheel through a pressure pump, at the moment, the strong oxidizing grinding fluid oxidizes a metallic bonding agent on the surface of the grinding wheel to form an oxide layer, and meanwhile, the oxide layer can slow down and prevent further oxidation, thereby avoiding too fast loss of the grinding wheel. The problem that a hard layer is formed on the surface of the grinding wheel through existing electric spark method dressing, and the follow-up grinding effect becomes poor is solved.

Description

technical field [0001] The invention relates to the technical field of grinding, in particular to an online sharpening method in which a strong oxidative grinding fluid is sprayed onto the surface of a superhard abrasive metal bonded grinding wheel. Background technique [0002] Superabrasives have been widely used in the field of mechanical processing due to their extremely high hardness and wear resistance. During the grinding process, due to the strong holding force of the superabrasive grinding wheel bond on the abrasive grains, the abrasive grains cannot be removed in time after wear. The falling off, the clogging of the chip pocket, and the decline of the grinding performance of the grinding wheel, so in order to achieve good grinding performance, the grinding wheel must be trimmed. Shaping and sharpening are two processes of grinding wheel dressing. Round, to reduce the beating that occurs during the grinding process of the grinding wheel, and sharpening is to make th...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies of the prior art, the present invention provides an online sharpening method in which a strong oxidizing grinding fluid is sprayed onto the surface of a superhard abrasive metal bond grinding wheel. A strong oxidizing agent is mixed into the grinding fluid to configure a strong oxidizing Cutting fluid, which solves the problem that the current EDM dressing will form a hard layer on the surface of the grinding wheel, which will deteriorate the subsequent grinding effect. At the same time, the whole method can realize online dressing of superhard abrasive metal bond grinding wheels without complicated devices. Moreover, the oxidant has no risk of secondary pollution, which is conducive to industrial application

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