Method for manufacturing artificial diamond polycrystalline grinding wheel dressing pen head

Abstract

The invention provides a method for manufacturing an artificial diamond polycrystalline grinding wheel dressing pen head, which comprises the following steps: drilling a hole on a hexagonal boron nitride solid block in advance; putting a mixture of diamond and metal Co micro powder in the hole, and putting the hole and the mixture into a high-temperature and high-pressure resistant die to synthesize artificial diamond polycrystalline (PCD) so as to achieve the preforming of the dressing pen head; and processing round or tapered holes and other holes on the hexagonal boron nitride solid block to achieve the shape diversification of the dressing pen head, and simultaneously controlling the size of the holes to determine the size of a pen head processing surface. The method can greatly improve the service life and can satisfy the requirement of industrial production; besides, the price is obviously lower than that of the prior dressing pen head made from materials of natural diamond and the like, and simultaneously the service life is remarkably increased compared with that of the prior dressing pen head, and the dressing pen head has no external structures and simple mounting.

Description

technical field [0001] The invention relates to a tool for grinding wheel dressing, in particular to a method for making a grinding wheel dressing pen tip using synthetic diamond polycrystalline as the tip. Background technique [0002] For grinding wheels, the surface of the workpiece is easily adhered by abrasive particles, which affects the grinding effect. Therefore, a dressing pen must be used to remove the grinding debris on the surface of the grinding wheel and restore the sharpness of the grinding wheel. When dressing the grinding wheel, the grinding wheel and the dressing pen are used for grinding, and the grinding wheel rotating at a high speed wears the tip of the dressing pen more. Therefore, at present, the dressing pen uses natural diamond and the like as the material of the pen head. The processing method of the existing diamond grinding wheel dressing pen is usually to pre-fabricate a hole at the top of the pen head, and use a laser to cut the diamond film i...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the size of the processing surface of the tip of the trimming pen is small, generally around 3 mm, and the trimming efficiency is low. The size of the processing surface of the present invention can be greater than 3 mm, which greatly improves the trimming efficiency; there are few types of tip shapes, mostly round, And forming process is more difficult, cost is big, economic benefit is poor, the present invention can provide taper, square shape etc., has simplified forming process, realizes the preforming of trimming pen nib, reduces cost; The thermal requirements are relatively high, and the strength of the nib will be broken if the temperature is too high. The invention greatly improves the heat resistance of the nib and increases the service life of the nib.