A method of calculation of cutting forces at diamond grinding of brittle materials is proposed in article. The cutting forces: normal, tangential and fracture, acting to single grain are calculated. Total grinding forces are defined by average number of grain in contact zone. Calculating values of forces are compared with result of experimental approximation of measuring force at grinding of glass-ceramic workpiece. Grinding forces increase with increasing of diamond grains wear and can be indicative of grinding wheel blunting.

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The finish diamond grinding of a parabolic surface of a hard alloy punch with a grinding wheel with a multilayer composite electrolytic coating is considered. The cutting forces acting on a single grain are calculated. The cutting conditions that provide high tool life and the required quality of the machined surface are determined. Keywords diamond grinding, grinding wheel, multilayer composite electrolytic coating, quality, machined surface, cutting forces. katapu@mail.ru