3 research outputs found
Impact of technological system’s characteristics on the machining accuracy of bearing rings
The article shows the influence of the technological system of an automated lathe, in particular cam
chucks, on the accuracy of machining bearing rings for production conditions. The value of the deformation during
machining, i.e., the non-circularity of the ring of a single row tapered roller bearing 32017X in outer diameter, was
investigated. For the study, samples were selected that were processed under the same conditions directly in the
production unit of PJSC “SKF Ukraine” without interference with the technological process. The use of replaceable
floating cams in the chuck design was proposed to increase the accuracy and productivity of machining. Experimental
studies have shown that the machined surface’s ovality depends on the chuck cams’ clamping force. The
effectiveness of computer processing of statistical data on the accuracy control of engineering products was shown.
Implementing machining accuracy control in production using the Minitab computer program was presented. It was
proven that the quality of products is formed under the influence of the use of modern computer technologies at all
stages of manufacturing and control of parts, which ensures research in a wide range of changes in technological
parameters and comparison of individual studies with actual machining conditions on the machine, with the results of
a sufficient level of reliability
Коррозионный синтез сульфидов никеля – перспективных электродных материалов возобновляемых источников электроэнергии
На основе анализа литературных данных установлено, что сульфиды никеля являются эффективными электрокатализаторами и могут быть использованы в качестве электродных материалов первичных, а также возобновляемых источников тока – топливных элементов. В ходе экспериментальных исследований установлено, что синтезированный, путем коррозионного растворения, никель-сульфидный слой обладает повышенной каталитической активностью по отношению к процессу электровостановления кислорода