Abstract
The critical pressure which corresponds to the breaking stress of the grinding stone has been suggested to have a specific value for the composition of grinding stone (kinds of abrasive grain and bond, percentage of grain, bond and pore, and grain size). However the critical pressure on a superfinishing stone may be decreased for the grinding conditions, because the alternating stress would generate in the cutting edges which is vibrated.Then in this paper, the wear characteristics on superfinishing stone are considered. As the results, it has become evident that the magnitude of alternating stress, i. e. the stress amplitude on the cutting edges is dependent upon the coefficient based on the maximum inclination angle of superfinishing. Therefore, this coefficient is called as the coefficient of stress amplitude in this paper. And it is described that the critical pressure of the stone under the alternating stress can be expressed quantitatively as the function of the coefficient of stress amplitude.
