Model of the system of strains and cut-down layer deformation parameters in the cutting zone
The interrelation of the cut-down layer strain with the stress distribution in the cutting area and the tool wedge loading have been considered. The investigation results of the cutting process contact characteristics when turning heat-resistant steels and alloys in the technologically appropriate range of the operating modes variation have been given. The current state of the problem of the cut-down layer strain when turning heat-resistant steels and alloys from the perspectives of the plastic collapse theory has been produced. It has been shown that the deformation of the material being machined is characterized by the value of relative shear e and chips shrinkagex when cutting, as well as the geometric parameters that determine the location of the resultant cutting force in the conditional shear plane and on the front surface of the tool. As a result of the conducted studies, the cut-down layer strain parameters and the system of strains acting in the cutting area that allow forming the loading model of a tool have been determined. It is necessary to predict its performance in the edge cutting machining of high strength difficult-to-cut materials