Effects of Uniformity in Wheel Structure on Grinding Characteristics of Vitrified CBN Wheels(CBN grinding technology)

Abstract

In order to make clear the effects of the uniformity in wheel structure on the grinding performance of vitrified CBN wheels, cylindrical plunge grinding experiments have been conducted using the two types of CBN wheel manufactured by a newly proposed method and a conventional method. The improvement of uniformity in wheel structure is effective to reduce the wheel wear and the increasing rate of surface roughness with the progress of grinding. The variation in distribution of grain cutting edges decreases by improving the uniformity of wheel structure and it inhibits the reduction of a cutting edge density during the grinding process. Consequently, the estimated tool life of uniform wheel, based on the roughness of finished surface, is about 1.8 times longer than that of conventional wheel.