Trimming-free super-hard grinding wheel for machining hard and brittle materials and preparation method thereof

Abstract

The invention discloses a trimming-free super-hard grinding wheel for machining hard and brittle materials. The trimming-free super-hard grinding wheel comprises a base body, a grinding layer is composed of a plurality of layers of abrasive layers; the grinding layer is provided with a circumferential chip removing groove and a radial chip removing groove; each abrasive layer is prepared from thefollowing components in parts by mass of 20-55 parts of super-hard abrasive, 10-35 parts of resin powder, 3-15 parts of metal powder, 2-10 parts of filler, 2-6 parts of pore forming agent, 1-3 parts of calcium sulfate whisker and 1-2 parts of wetting agent; and during preparation, the raw materials of the abrasive layer components are uniformly mixed, hot-pressed and formed, cured, cooled to roomtemperature along with the furnace to obtain each abrasive layer blank, the abrasive layer blank is bonded to the base body, the grinding wheel is machined according to requirements, and the corresponding chip removing groove is cut out on the abrasive layer to obtain the finished product of the grinding wheel. The grinding wheel has excellent chip removal capability, heat dissipation capability and excellent self-sharpening performance, can ensure the machining quality of the workpiece and does not need to be trimmed, greatly improves the machining efficiency, and is low in production cost and simple in preparation process.

Description

technical field [0001] The invention relates to the field of grinding abrasives, in particular to a dressing-free superhard grinding wheel for processing hard and brittle materials and a preparation method thereof. Background technique [0002] In the grinding of hard and brittle materials, when the workpiece needs to be removed with a large allowance, in order to improve the processing efficiency, the single depth of cut is usually increased and the cutting speed is increased. Under these conditions, a large amount of grinding debris and heat will be generated during the grinding process. However, the existing grinding wheel will produce problems such as large grinding noise, high load of the machine tool, clogging of the grinding wheel, and easy burns during large-depth cutting and fast-feeding processing, resulting in poor surface quality and even substandard dimensions of the processed workpieces. Frequent grinding wheel inspections are required. Trimming to solve the a...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a dressing-free superhard grinding wheel for processing hard and brittle materials and a preparation method thereof in order to solve the problems of large cutting depth of hard and brittle materials, easy clogging and burning of the grinding wheel during fast-feed grinding, and frequent dressing.

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