A kind of superhard grinding tool dressing tool and preparation method thereof

Abstract

The invention relates to a superhard abrasive dressing tool, which is made of the following raw materials in mass percentage: 30-55% of ordinary abrasive, 10-35% of PTFE powder, 20-40% of resin powder, and 5-5% of modified filler 34%, reinforced fiber material 5‑10%, coupling agent 1‑6%. The dressing tool of the present invention has a wide range of applications, high efficiency and low cost, and can be applied to dressing of diamond and CBN grinding wheels with a particle size of 45# to 20000# for various hardness binders; the dressing efficiency is lower than 3-10min, and the dressing effect is excellent. Can reach 1cm 2 The sharpness rate of abrasives on the plane is above 98%.

Description

technical field [0001] The invention belongs to the technical field of superhard materials, and in particular relates to a dressing tool for superhard abrasives during use of diamond and CBN grinding wheels, specifically, the raw materials, formula and preparation process required for the preparation of the dressing tool. Background technique [0002] Abrasive abrasives are called the teeth of industry and are widely used in the precision machining industry. With the development of industry, the requirements for high-precision processing of superhard abrasives are getting higher and higher. Among them, resin-bonded diamond and cubic CBN grinding wheels show great advantages in high-precision machining, because resin-bonded diamond and CBN themselves have relative elasticity, high self-sharpening, and different functional fillers can be added inside, such as polishing materials, heat dissipation materials, conductive materials, etc., which have unique functional applications....

AI Technical Summary

Problems solved by technology

However, these materials have a relatively small range of application. For example, green silicon carbide and white corundum grinding wheels generally dress coarse grinding wheels or semi-finishing grinding wheels, but the dressing effect of fine grinding and super-finishing grinding wheels is not good; materials such as soft iron and copper have lower porosity. Large resin-bonded grinding wheels tend to stick to chips, which is not conducive to the grinding of the grinding wheel to be trimmed, and the dressing efficiency of soft iron materials is very low, especially for fine-grained resin-bonded centerless grinding wheels, the dressing wheel wears quickly, basically A centerless grinding wheel with a diameter of 300mm, a width of 5mm and a thickness of 100mm needs at least 10 hours of dressing time if it is trimmed with the above materials

When dressing the vitrified bonded diamond grinding wheel with a single-point pen, the wear is fast and the dressing accuracy is poor, and it is impossible to dress the high-concentration fine-grained (600 mesh or finer) vitrified bonded diamond grinding wheel

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