Single-layer superabrasive shaped grinding wheel and manufacturing method thereof

Abstract

The invention provides a novel single-layer superhard abrasive formed grinding wheel. The novel single-layer superhard abrasive formed grinding wheel comprises a grinding wheel base body, a bonding layer bonded onto the outer circumferential face of the grinding wheel base body, a brazing filler metal layer bonded onto the periphery of the bonding layer, and an abrasive layer fixed to the periphery of the brazing filler metal layer. The abrasive layer is obtained by being fixedly bonded onto the inner profile surface of a female die through the inner plating method. The brazing filler metal layer is fixedly connected with the abrasive layer through liquid phase sintering of brazing filler metal powder. The formed grinding wheel is obtained through the following steps that (1) the female die is manufactured; (2) the abrasive layer is manufactured; (3) the brazing filler metal layer is manufactured; (4) a mandrel is removed; (5) the grinding wheel base body is manufactured; (6) finish machining is performed; and (7) the female die and an electroplated coating are removed, so that the formed grinding wheel is obtained. The formed grinding wheel prepared through the method has the advantages of being high in precision, good in sharpness, long in service life and particularly suitable for efficient precision forming grinding of various kinds of materials.

Description

technical field [0001] The invention relates to a grinding wheel, which belongs to the field of abrasive tools. Specifically, it relates to a single-layer superhard abrasive forming grinding wheel, and also relates to a method for manufacturing the grinding wheel. Background technique [0002] At present, the single-layer superabrasive forming grinding wheel mainly has two manufacturing methods: electroplating and brazing. The advantage of electroplated grinding wheel lies in high forming precision, but the disadvantage is that the external plating process cannot effectively control the distribution density of abrasive grains on the surface of the grinding wheel, and the chip space of the grinding wheel is not sufficient, resulting in poor sharpness. Weak, so that the electroplated grinding wheel is prone to thermal damage on the surface of the workpiece, clogging of the grinding wheel and premature shedding of abrasive grains when the electroplated grinding wheel is used fo...

AI Technical Summary

Problems solved by technology

The advantage of electroplated grinding wheel lies in high forming precision, but the disadvantage is that the external plating process cannot effectively control the distribution density of abrasive grains on the surface of the grinding wheel, and the chip space of the grinding wheel is not sufficient, resulting in poor sharpness. Weak, so that the electroplated grinding wheel is prone to thermal damage on the surface of the workpiece, clogging of the grinding wheel and premature shedding of abrasive grains when the electroplated grinding wheel is used for high-efficiency grinding

The advantage of brazed grinding wheel is that it can conditionally optimize the surface topography of the grinding wheel. In addition, the chemical metallurgical combination between the abrasive grains and the active solder can ensure the high holding force of the grinding wheel to the abrasive grains, so the sharpness and service life of the grinding wheel can be extended. It has been greatly improved, but the disadvantage is that the high-temperature brazing process will inevitably cause thermal deformation of the grinding wheel base, resulting in a decrease in the manufacturing accuracy of the grinding wheel, and it is difficult to be used for precision grinding

[0003] It can be seen that the above-mentioned disadvantages of electroplated grinding wheels and brazed grinding wheels, that is, they cannot meet the requirements of high forming precision and high sharpness of grinding wheel tools at the same time, resulting in the inability of single-layer superabrasive forming grinding wheels to give full play to their performance advantages, which has become a constraint on high efficiency. The key to the development and application of precision forming grinding technology

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