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The article discusses the effect of epilamated coatings during mandrelling. The picture of the change in contact stresses in the DEFORM-3D system is presented. It was established that a decrease in the coefficient of friction from 0.9 to 0.6 leads to a decrease in the number of foci and areas of contact stresses, as well as temperature analysis showed that a decrease in the friction forces reduces heat transfer in the cutting zone by about 40 ° C.

The article considers a mathematical model of the surface roughness of electrotechnical details from copper processed by combined tool with a longitudinal arrangement of tools for turning and diamond smoothing with a study of the patterns of microrelief formation during machining and plastic deformation of a copper surface. Experimentally have been proved the relevance and scientific significance of the work and the need to take into account one of the component roughnesses in the calculations of other combined tools

To increase the strength, reliability, durability of the cutting tool, various wear-resistant coatings are applied to its cutting part. At the same time, under cutting conditions, it is necessary to ensure a high degree of adhesion of the coating to this part of the tool. The paper presents theoretical aspects that make it possible to select the operating modes of the tool that preserve the integrity of the “coating-base” system.

The article deals with the problems of increasing the efficiency of centrifugal processing with a rigid contact. It is shown that when materials with different properties interact, it is energetically "advantageous" to have a discontinuous contact between interacting elements of the surfaces of the tool and the part. It has been established that epilating the working surfaces of the tool significantly changes the nature of the resistance to adhesive interaction, the effectiveness of which is significantly increased when using cutting fluids (lubricating and cooling technological media).