Abstract
In modern engineering, a wide range of grinding wheels with different characteristics in hardness, grain, structure and other parameters is used. In the same grinding conditions by the wheels of different characteristics, the cutting force, temperature in the contact zone of the wheel and the workpiece, elastic movement of the technological system and the quality parameters of the treated surface will be different. Moreover, the parameters of the grinding process change significantly during the wheel durability between dressings due to the blunting of the wheel cutting grains. Therefore, considering the parameters of the wheel characteristic is mandatory when designing high-performance cutting modes, which ensure the stable quality in processing the parts batch. However, there are still no models and methods considering the parameters of the grinding wheel characteristic when calculating the cutting force, thermal indicators in the cutting zone, optimal cutting modes and quality indexes of the treated surface. The article proposes an approach for considering the wheel characteristic through the index of the wheel grain blunting in the cutting force model for the internal grinding. A method for calculating the range of blunting of the wheel grains between dressings in dependence on the parameters of the wheel characteristic is developed.
