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Документ 3D methodology of research of diamond-abrasive machining process(Національний технічний університет "Харківський політехнічний інститут", 2020) Grabchenko, A. I.; Fedorovich, V. A.; Pyzhov, I.; Ostroverkh, Y.; Kozakova, N.Subsystem of computer-generated determination of conditions of manufacturing of defect-free diamond wheels and grinding of superhard materials on the base of 3D simulation of deflected mode of elements of the "SHM crystal grain – metal phase – grain – bond" system at process of diamond wheel sintering and grinding is developed.Документ Specificity of using diamond micropowders in wheels on metallic bonds(Національний технічний університет "Харківський політехнічний інститут", 2019) Grabchenko, A. I.; Pyzhov, I.; Dobroskok, V. L.; Fedorovich, V. A.; Ostroverkh, Y.Some issues related to the possibility of increasing the efficiency of shaping blade tools from polycrystalline superhard materials by diamond grinding are considered. It has been established that one of the ways to increase the efficiency of using diamond micropowder grains in circles is to apply thick metal coatings on them. The use of embossed metal coatings on diamond grains can significantly extend their cutting resource. This is explained on the one hand by a stronger adhesion of the coating material to the diamond surface compared to the components of the binder, and on the other hand, a significant increase in the contact surface of the coated grain with the binder of the circle. It was established that the strength of metal and ceramic ligaments should be consistent with the strength of diamond grains sintered with it, and the concentration and graininess of the latter have a significant impact on the integrity of the grains in the sintered layer.Документ Mathematical simulation of motion of working medium at finishing-grinding treatment in the oscillating reservoir(Springer-Verlag London, 2014) Mamalis, A. G.; Grabchenko, A. I.; Mitsyk, A. V.; Fedorovich, V. A.; Kundrak, J.The results of mathematical simulation have been carried out for the pattern of working medium motion providing the technological process of finishing–grinding treatment in an oscillating reservoir. With use of physics laws, it is ascertained and grounded that the flow of granules at the plane wall of reservoir is travelling oppositely to the source of vibrations, whereas the granules are drifting on the cycloid–trochoid trajectories from the wall of reservoir, where the looped displacement is maximal, to the center of reservoir in which the shift of granules is reduced to minimum because of damping and dissipation effect. The received theoretical regulations have a fundamental nature and can be used at the account of technological parameters of designed vibration machines.