Modeling the process of mineral rocks cutting with a tool made of polycrystallinе superhard materials

Purpose.To analyze the process of rocks cutting by a tool made of polycrystallinе superhard materials (PSM). Methods. Mathematical modeling of rock destruction process. Findings. A model of deformation and fracturing of rock mass under the influence of a tool made of PSM is developed, which makes it possible to calculate the pressure in the zone of the tool contact with the rock and determine the change of the tool surface shape during wear. Originality.The developed model of the PSM interaction with the rock mass takes into account both tool wear and displacement due to the elastic deformation of the rock, formation of the pre-destruction zone and brittle fracture of the rock. Practical implications. It is shown that the shape of the worn out tool surface essentially depends on the ratio of the parameters describing elastic deformation, formation of the pre-destruction zone and brittle fracture of the rock, which can be used to determine the relative role of these processes in cutting various types of rocks.