Shaping the Topography of the Active Surface of a Ceramic Grinding Wheel with a Stationary Multi-Point Diamond Dresser

Abstract

Stationary multi-point diamond dressers are an economical alternative to single-point dressers. However, when using them, it is necessary to keep in mind the different way of shaping the surface topography of the wheel being dressed. During one dressing pass, the grinding wheel is affected by several diamonds fixed at specific distances on the dresser surface. The simulation studies presented in the paper showed that, depending on the dressing feed and the distance and active width of the diamonds, the overlap of their motion paths is not the same over the entire grinding wheel surface, as is the case when single-point dressers are used - the grinding wheel surface consists of areas shaped with different overlap ratios. Taking into account the results of simulation studies, formulas were proposed for calculating two new indicators to supervise the dressing process with stationary multi-point dressers. Experimental dressing tests using new indicators and the evaluation of the vitrified grinding wheel topography confirmed the usefulness of using the new indicators and the inhomogeneity of the grinding wheel surface topog - raphy, resulting from the different overlapping of the motion paths of individual dresser diamonds.