Abstract
Among surface imperfections obtained by grinding, periodical marks caused by grinding vibration appear frequently. According to the mechanism by which the marks are formed, there are various kinds of features which can be important clues to diagnosing the type of grinding vibration and making appropriate counterplans. By classifing the marks due to each type of grinding vibration experimentally as well as theoretically, they can be divied into two major types depending on whether the marks are formed chiefly by a shape error or by a roughness variation. In addition, the relationship between the presence of the marks and the speed ratio, and the marks' inclination to the wheel axis are generalized to correspond with the different grinding processes and types of grinding vibration. The generalized relationship makes it possible to narrow down the possible causes to few types of vibration. Also, an optical method which is necessary for the diagnosis is proposed for measuring the features of the marks. Together with the principal counterplans for each type of grinding vibration, basic knowledge of vibration diagnosis has been obtained.
