Modeling of Thermal and Dynamic Conditions of Intermittent Grinding, Affecting the Quality Parameters of the Surface Layer of Machined Parts

This work is devoted to ensuring the required quality of the surface layer of the workpieces during the grinding operation, considering the thermal, physical, and dynamic phenomena that occur during intermittent grinding. The influence of the scale factor of the dimensions of the elements of macrotopography of the working surface of discontinuous circles on their cutting ability, heat release in the zone of contact of the abrasive tool with the workpiece, and parametric instability of the elastic system of the machine tool and, as a result, on the quality parameters of the surface layer of ground parts is established. The required quality parameters of the surface layer of parts in the operation of flat grinding with intermittent wheels can be achieved by reducing the scaling of the elements that make up their working macroprofile, i.e., the use of abrasive wheels on their working surfaces parallel to the axis of rotation. The design of a discrete wheel is proposed, which provides the required geometric and physical-mechanical parameters of the quality of the surface layer of workpieces during the grinding operation.