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Registration Number

0224U002944, 0121U112077 , R & D reports

Title

Providing the optimal exploitation properties of the working surfaces of the responsible machine parts by technological method

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Head

Dziura Volodymyr O., Доктор технічних наук

Registration Date

18-03-2024

Organization

Ternopil National Technical University named after Ivan Puluj

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 An analysis of technological methods and ways to improve the operational properties of machine part working surfaces by technological means has been conducted. Recommendations have been developed for forming regular microreliefs on flat and cylindrical surfaces using surface plastic deformation methods, specifically vibratory burnishing and a non-vibratory method using a milling machine. As a result of the research, the optimal geometric parameters of regular microreliefs, in terms of ensuring maximum oil retention, formed on flat surfaces, as well as partially regular microreliefs formed on the end surfaces of rotating bodies, have been determined. It is proposed to evaluate the operational properties of the surface by the relative support length of the profile cross-section, surfaces with regular microrelief. The peculiarities of forming partially regular microreliefs on the end surfaces of rotating bodies are considered. Microreliefs have been formed, the geometric parameters of which change depending on the distance to the center of rotation of the end surface. Analytical dependencies for determining the geometric parameters of such microreliefs have been obtained. The methodology developed for the analytical description of the technological process of applying a microrelief to the inner surface of cylindrical parts and the calculated dependencies of the dynamics of the formation of regular microreliefs allow to assert that the configuration of micron unevenness depends not only on the angular velocity of rotation of the body and the component of the driving moment, which forces the body to perform a relative oscillatory movement, but also on the elastic vibrations of the body itself.

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Dziura Volodymyr O.

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2024-03-18