2022 № 97 Різання та інструменти в технологічних системах
Постійне посилання колекціїhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/65926
Переглянути
3 результатів
Результати пошуку
Документ Analyzing the effect of the tool pass number and the direction of sliding burnishing on surface roughness(Національний технічний університет "Харківський політехнічний інститут", 2022) Nagy, Antal; Varga, GyulaNowadays, the concern of environmental protection is becoming more and more important in production as well. They often contribute to this by reducing or eliminating the amount of coolants and lubricants, or by using alternative machining methods. One of them is burnishing, which makes a positive effect on surface integrity, while reduces the environmental load. In this paper we examined the change in surface roughness achieved by burnishing after turning on a corrosion-resistant steel workpiece, where the number of burnishing passes and burnishing direction were changed. The results showed increased smoothness, bearing capacity and dimensional stability by increasing the number of passes from 1 to 2, however, the 3 times repetition did not show any additional favorable improvement on the surfaces. In case of the forward-backward-forward burnishing directions, further chipping occurred, in other cases the effect of the directions was negligible on the amplitude roughness parameters, but considerable on the parameters characterizing the roughness peak. The greatest improvement was achieved with the backward-forward settings.Документ The effect of burnishing process on skewness and kurtosis of the scale limited surface(Національний технічний університет "Харківський політехнічний інститут", 2022) Ferencsik, Viktoria; Varga, GyulaIn this paper roughness examination and analysis on burnished low alloyed aluminium surfaces are reported, highlighting 2 parameters from the vertical deviations of the roughness profile from the mean line. From the input parameters of the burnishing process, the effect of burnishing force, feed rate, speed and number of passes are investigated. Measurements of the surface topography – before and after burnishing – are conducted on an Altisurf 520 3D measuring device. The generated and calculated values of the machined surface roughness are analysed in detail with the drawing of the conclusions as well.Документ Preliminary analysis of surface topography in tangential turning(Національний технічний університет "Харківський політехнічний інститут", 2022) Sztankovics, I.; Pásztor, I.Among the productivity-increasing high feed turning procedures, the tangential turning is studied in this paper. Our main focus was a preliminary analysis of the machined surface topography by the DoE method. To achieve this goal 2 kinds of cutting speed, feed and depth of cut were chosen as factors which are influence the surface topography, resulting in 8 experimental setups. After the cutting experiments 2D profile measurements and shape error measurements were done. In this paper the Ra, Rz parameters of the roughness profile, Wa, Wz parameters of the waviness profile and the straightness error were analysed in more depth. We determined their alteration as a function of the studied parameters and designated our further research directions.