Deep grinding with profiled diamond wheels is a high-performance machining method. This method is used for machining a wide range of carbide products. However, since the entire allowance is removed in one machining pass during deep grinding, the process is characterized by increased heat generation. High temperatures in the machining area have a negative effect on the quality of products. It is possible to limit the negative impact of the heat intensity of the machining process by selecting rational grinding modes. The paper objective is to ensure the quality of machining during deep grinding of a carbide cutting tool with profiled diamond wheels based on a systems approach. Deep grinding was considered from the point of view of two limiting conditions - blunting of the diamond wheel and the heat stress of the process. The controlling factors are the feed rate of the part, the grinding depth and the choice of a coolant. Based on the strength characteristics of a carbide material, a crack formation criterion is introduced - the stress intensity coefficient. An algorithm for assigning rational grinding modes is developed based on an analysis of the conditions for maintaining the cutting ability of the wheel and the division of thermal fields and temperature stresses. The engineering preparation of the profiled grinding operation is carried out, the machining modes of the carbide end mill are assigned, finite element modeling of thermal processes in the machining area is performed, and the possible defect of the treated surface is analyzed. A method is proposed for identifying the areas of the profile that are most dangerous for defects based on the temperature gradient and temperature stresses in different sections of the profile. The proposed algorithm for determining the modes of profiled deep diamond grinding of hard alloys ensures the achievement of high-quality product parameters with high productivity of grinding.
Zverovshchikov et al. (Sun,) studied this question.