Renewal of train wheels

V diplomski nalogi je narejena primerjava obnove pogonske kolesne dvojice za potniško garnituro DMW 713/715 med postopkom, ki ga izvajajo v SŽ-Centralne delavnice Ljubljana, proizvodnja Ptuj in postopkom, na izbranih sodobnejših strojih. V SŽ-Centralne delavnice Ljubljana, proizvodnja Ptuj imajo velike probleme pri doseganju zahtevanih standardov, ki jih določajo kupci, oziroma jih zahtevajo stroga varnostna navodila, saj so stroji, na katerih poteka obnova kolesnih dvojic dokaj zastareli. Cilj diplomske naloge je bil poiskati ustrezne sodobne obdelovalne stroje, s katerimi bi bila obnova kolesne dvojice kvalitetnejša, varnejša, predvsem pa hitrejša. Diplomska naloga zajema opis postopka razstavitve kolesne dvojice, opis kontrole in obdelav posameznih komponent ter opis sestavitve oziroma naprešanja kolesne dvojice. Največ pozornosti je namenjene strojni obdelavi posameznih komponent in izračunu obdelovalnih časov na izbranih sodobnejših strojih. Narejena je tudi časovna primerjava med sedanjim postopkom obnove, ki poteka v SŽ-Centralne delavnice Ljubljana, proizvodnja Ptuj, in postopkom na izbranih sodobnejših strojih.In this dissertation is made a comparison on reconstruction of a propelling wheel set for the series DMW 713/715 between processes used in SŽ-Central workshop in Ljubljana, production Ptuj and process used on selected modern machines. In SŽ -Central workshop in Ljubljana, production Ptuj have big problems with reaching required standards that are set by the costumers or are required by strict safety instructions, because machines, on which reconstruction of a propelling wheel takes place, are rather outdated. The aim of my dissertation was to find suitable modern machines, with which the reconstruction of a propelling wheel would be higher quality, safer and mainly faster. My dissertation describes the process of disassembly of propelling wheel, a description of the control and processing of individual components, and a description of preparation or pressing of propelling wheel. The most attention is dedicated to machining of components and calculation of machining time on selected modern machinery. It is also made a time comparison between the current procedure of reconstruction, which takes place in the SŽ-Central workshop, Ljubljana, the production Ptuj, and the process on selected modern machines