Local Contact Deflections in Grinding — Groups of Grains and Single Grains

Abstract

Summary The practical significance of local contact deflections in precisian grinding operations makes them an important area of research. They are relevant not only for their direct influence on dimensional accuracy and surface finish, but also as important components in the building-up of conceptual models for closed-loop simulation of grinding. This paper extends the knowledge of the mechanism of deflection of an individual grain in grinding, providing a better understanding of the performance of groups of grains. Groups, or patches, of grains were found to have a smaller local deflection than a single grain. Evidence was found of grain rotation within a patch. This indicates that the mechanism of grain rotation, found and reported far single grains in an actual grinding wheel, is likely to apply for full-cutting wheels, and not to be a consequence of the experimental procedure for isolating a single grain on an actual wheel.