The final surface quality of the part and its geometric dimensions are formed by grinding operations. Research of the param- eters of grinding with an oriented tool in the blunting mode is an urgent task, since it will provide an increase in processing productivity. The operation of the tool in the bluntness mode provides the necessary geometric shapes of the part and surface roughness. On the other hand, this operating mode of the wheel is accompanied by clogging and a decrease in the cutting ability of the tool. Therefore, it is necessary to research the heat tension of the grinding process under these processing conditions. Methods of deep grinding with crossed axes of the tool and cylindrical part are considered. The results of an experimental research of finishing single-pass grinding of a cylindrical surface of a shaft with an oriented tool are presented. The features of the process of grinding work pieces made of plastic materials are considered. Lack of research on the heat tension of the process of grinding cylindrical surfaces by the periphery of an oriented circle in the bluntness mode.To research the heat tension of the process of grinding cylindrical surfaces by the periphery of an oriented circle in the bluntness mode. To analyze the influence of the constituent forces of grinding on the processing process.During the operation of the wheel in the bluntness mode, its cutting ability decreases and the heat tension of the grinding process and vibration increases. At the same time, the necessary geometric shape of the circle is created, which provides the specified roughness and dimensions of the part.The heat tension of the process of grinding cylindrical surfaces by the periphery of an oriented circle during its operation in the blunting mode is researched. According to the calculations, the tangential component of the grinding forces from the plastically deforming and cutting grains does not have a significant effect on the temperature rise at the calibration section.

Остаточна якість поверхонь деталі та її геометричні розміри формуються операціями шліфування. Робота інструмента в режимі затуплення забезпечує необхідні геометричні форми деталі та шорсткість поверхні. З іншого боку, цей режим роботи круга супроводжується засалюванням та зменшенням різальної здатності інструмента. У роботі наведено дослідження теплонапруженості процесу шліфування циліндричних поверхонь периферією орієнтованого круга в режимі затуплення. Згідно з розрахунками дотична складова сил шліфування від пластично деформуючих та різальних зерен не здійснює суттєвого впливу на підвищення температури на калібрувальній ділянці.