Device and method for preparing grinding wheel with orderly arrangement of magnetic abrasive grains

Abstract

The invention discloses a device preparing a magnetic abrasive particle orderly assigned grinding wheel and a grinding wheel preparation method; the device comprises a grinding wheel forming die and an excitation system; the grinding wheel forming die comprises a magnetic conductive rod, an upper die and a lower die sleeved on the magnetic conductive rod, and a die sleeve sleeved on the upper and lower dies so as to serve as an upper magnetic conductive plate; a grinding wheel forming cavity used for containing grinding wheel mixture material is formed between the magnetic conductive rod, the upper die, the lower die, and the die sleeve serving as the upper magnetic conductive plate; the excitation system comprises the magnetic conductive rod, a lower magnetic conductive plate sleeved on the magnetic conductive rod, the die sleeve serving as the upper magnetic conductive plate, and a magnet positioned between the lower magnetic conductive plate and the die sleeve serving as the upper magnetic conductive plate; magnetic lines of the magnet are arranged in a grinding wheel radial direction. The device and method are convenient in operation, and can realize multilayer ordered assignment of the magnetic abrasive particles in the grinding wheel; the grinding wheel is short in forming period, stable in forming technology, good in grinding wheel wear resistance, and high in grinding processing surface quality.

Description

technical field [0001] The invention belongs to the field of preparation of abrasive materials and abrasive tools, and in particular relates to a method for preparing abrasive grains in an orderly arrangement of a grinding wheel by using magnetic abrasive grains and assisting with a magnetic field. Background technique [0002] In recent years, with the rapid development of optics, electronics, information, and aerospace technology, high-integration, high-performance, and high-precision optical systems require optical components represented by hard and brittle materials such as tungsten carbide, silicon carbide, and optical glass. It is becoming more and more stringent, requiring not only nano-scale surface roughness, but also very uniform surface quality. This requires the use of micropowder grinding wheels. The traditional micropowder grinding wheel, due to the small size and irregular shape of the micropowder abrasive, is often prone to segregation and aggregation. The a...

AI Technical Summary

Problems solved by technology

This grinding stone is actually a curable magnetorheological fluid, which is made of magnetic particles, abrasive particles and high molecular polymers, such as resin, mixed in a certain proportion. It is mainly used for polishing and cannot be used for molding. Grinding, and the iron powder in it is separated from the non-magnetic abrasive grains. The principle is that the iron powder is driven by the magnetic field to form a magnetic chain, and the moving iron powder will push the abrasive grains to move so as to achieve the purpose of regular arrangement of the abrasive grains. , which greatly reduces the effect of the regular arrangement of abrasive particles

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