A kind of optical curve grinding wheel and its preparation method

Abstract

The invention belongs to the technical field of dressing of superhard grinding wheels, and in particular relates to an optical curve grinding wheel for dressing superhard material chamfering grinding wheels of metal bond; it includes a base body and an abrasive layer, and the abrasive layer includes the following raw materials in parts by weight: abrasive 30-40 parts, and 60-70 parts of metal bonding agent; the metal bonding agent is composed of the following raw materials in parts by weight: 30-55 parts of copper powder, 25-50 parts of tin powder, and 5-10 parts of silver powder. The grinding wheel formula and processing technology of the invention are simple, and the operation is simple and convenient; the metal bond superhard material chamfering grinding wheel can be trimmed, the processing effect is good, and the micro groove size of the chamfering grinding wheel can reach the accuracy of plus or minus 0.01mm.

Description

technical field [0001] The invention belongs to the technical field of dressing superhard grinding wheels, and in particular relates to an optical curve grinding wheel used for dressing chamfering grinding wheels of metal bond superhard materials and a preparation method thereof. Background technique [0002] Metal bond superhard material chamfering grinding wheel is mainly used for processing the edges and corners of metal, ceramics, glass and other materials. There are concentric arc micro-grooves distributed on the outer circle. schematic diagram see figure 1 and figure 2 ). [0003] At present, there are mainly three ways of dressing the chamfering grinding wheel of this kind of metal bond superhard material, which are electrolytic grinding dressing, spark machine online dressing, and mechanical dressing. The device is on-line dressing, and the accuracy is seriously lost after disassembly, so it is impossible to carry out mass production of chamfering grinding wheels...

AI Technical Summary

Problems solved by technology

[0003] At present, there are mainly three ways of dressing the chamfering grinding wheel of this kind of metal bond superhard material, which are electrolytic grinding dressing, spark machine online dressing, and mechanical dressing. The device is on-line dressing, and the accuracy is seriously lost after disassembly, so it is impossible to carry out mass production of chamfering grinding wheels; spark machine dressing is currently the main dressing method for metal bond superhard material grinding wheels, but because spark machine dressing is a large current discharge in a short period of time, It is easy to cause the segregation of low melting point metal elements to change the bond composition of the repaired grinding wheel. The change of the composition will lead to the change of the grinding performance of the repaired grinding wheel, and the problem of unstable performance will easily occur when processing the workpiece; the above problems do not exist in mechanical dressing. However, no matter whether you use ordinary abrasive grinding wheels such as green carbon or superhard material grinding wheels, because the purpose is to process the micro-grooves of chamfering grinding wheels, it is necessary to trim the shape of ordinary abrasive grinding wheels or superhard material grinding wheels first, resulting in loss of precision and cannot be processed. This type of chamfering wheel

In addition, using an optical curve grinder with a metal bond superhard material grinding wheel can theoretically carry out this type of chamfering grinding wheel microgroove processing, but because the matching grinding wheel of the optical curve grinder is generally in the shape of a sharp corner, there are only one or two superhard grinding wheels at the sharp corner Abrasives, so this type of grinding wheel needs to have a strong ability to hold the abrasive. There is no relevant report on the optical curve grinding wheel for processing metal bond superhard material chamfering grinding wheels, and further research is needed.

Images