Modified diamond abrasive tool and manufacturing method thereof

Abstract

The invention discloses a modified diamond abrasive tool and a manufacturing method of the modified diamond abrasive tool. The modified diamond abrasive tool comprises a base body and diamond abrasive materials arranged in a work area on the surface of the base body, wherein the work area on the surface of the base body is a step surface provided with a plurality of steps, each step is composed of a vertical surface and a horizontal surface, the step surfaces gradually decrease from the working direction, the horizontal surface of each step is provided with at least one installation groove used for containing the lower portions of the diamond abrasive materials, the diamond abrasive materials are embedded in the installation grooves and sequentially distributed on the step surfaces, the topmost end of each diamond abrasive material is a sharp end or an edge, the diamond abrasive material at the topmost part of the step surfaces works firstly, and after the diamond abrasive material at the topmost part of the step surfaces is blunt, the diamond abrasive materials at the other parts gradually work. The sharp end or the edge of each diamond abrasive material is the topmost end of the diamond abrasive material, so that the diamond abrasive materials are used in an optimized mode. The contacting area between the diamond abrasive materials and a machined object is reduced, the grinding force is small, machining efficiency is high, and the service life of the modified diamond abrasive tool is prolonged.

Description

technical field [0001] The invention relates to an improved diamond abrasive tool, which is mainly used for drilling, cutting and grinding metal, stone, concrete, glass, ceramics, crystal, hard alloy, silicon wafer, magnetic materials and other materials, and also relates to the above-mentioned improved diamond tool. Methods of making abrasive tools. Background technique [0002] At present, metal bond diamond abrasive tools can be divided into three types: electroplating, sintering, and brazing. Among them, the electroplated diamond tools only rely on the coating to mechanically embed and inlay diamond abrasives, and there is no bonding strength at the interface between the diamond and the coating; while the sintered diamond tools are made of metal powder and diamond abrasive particles mixed with compacted sintering, impregnated with diamond abrasives There is neither infiltration nor bonding strength at the interface with the carcass material. The diamond abrasives of th...

AI Technical Summary

Problems solved by technology

[0005] 1. Since the surfaces of the brazing diamond nesting drill, saw blade, grinding wheel, and beaded diamond are respectively the end face of the nesting drill base, the outer circumferential surface of the saw blade base, and the outer cylindrical surface of the grinding wheel and the beading base, these surfaces The diamond abrasive grains participate in the cutting and grinding process almost at the same time. These diamond abrasive grains are blunted almost at the same time. After blunting, they are not easy to fall off because of their high bonding strength with the bonding agent. Therefore, the contact area with the processing object is increased, resulting in It is difficult for the tool to provide moderate pressure to perform effective grinding, which reduces the cutting efficiency and processing quality. If the cutting force is reduced and the cutting efficiency is improved by reducing the number of diamond abrasive grains on the tool surface, the tool life will be greatly shortened

[0006] 2. The regular diamond abrasive is hexahedron, octahedron or dodecahedron, and the surfaces are mostly parallel planes. During the brazing process, the diamond abrasive floats on the surface of the liquid-phase solder, under the action of the surface tension of the liquid-phase metal solder , the diamond particles on the tool surface are subjected to tension so that the plane of the diamond abrasive surface is parallel to the surface of the tool substrate, so during cutting and grinding, the new abrasive positioned in this way has the same effect as the old abrasive that has worn out a large plane, The sharp top and edge of the diamond abrasive are not well utilized

Diamond abrasives are the most expensive part of diamond abrasive tools, because their sharp tips and edges are not well utilized, resulting in disguised waste

[0007] 3. The diamond abrasive tools made by brazing process have their own advantages, but at the same time have their own defects, and it is impossible to concentrate on achieving more excellent performance

Images