Grinding Characteristics of Metal-Resin Bonded Wheel Containing Electroconductive Rubber Balls

Abstract

The conductive rubber bonded grinding wheel is a type of finishing wheel used in the ELID grinding process. Compared to cast-iron bonded wheels and metal-resin bonded wheels, which are generally used, ELID grinding techniques applying the conductive rubber bonded grinding wheel produce good ground surfaces, but have a number of shortcomings, including poor electrolytic dressing characteristics and grinding performance. To resolve these problems, the authors attempted to develop a hybrid grinding wheel made by incorporating conductive rubber bond in the metal-resin bonded wheel. The results of grinding experiments using the developed wheel on cemented carbide confirmed that the surface roughness was the same as that obtained by the conductive rubber bonded grinding wheel. The hybrid grinding wheel showed better removal amount than the rubber bonded grinding wheel.