20.500.12556/RUL-112738 Načrtovanje in razvoj orodja za natančno izrezovanje Planning and development of a fine blanking tool Zaradi naraščajoče kompleksnosti izdelkov je potrebno nadgraditi obstoječe tehnologije za zagotavljanje kakovosti. Ena od tehnologij za zagotavljanje dimenzij izdelka v ozkih tolerančnih območjih je fino štancanje. Za ta postopek se uporabljajo posebne, trojno delujoče stiskalnice. Cilj naloge je bil razviti orodje, s katerim bi lahko izvajali postopek finega štancanja na klasičnih ekscentrskih stiskalnicah. Opisali in primerjali smo postopek klasičnega in finega rezanja. V zaključnem delu so opisane ključne karakteristike za izdelavo orodja za fino izrezovanje. Preizkuse smo opravili na hidravličnih stiskalnicah z dvema različnima materialoma enake debeline ter ugotavljali vpliv hitrosti rezanja in sile pridrževanja na kakovost rezane površine in nastalega srha. Vpliv pridrževanja smo primerjali s pomočjo vzmeti in hidravlike. Na koncu smo ugotovili, da sta oba materiala primerna za fino štancanje, vendar se pojavljajo razlike v kakovosti rezane površine pri različnih načinih pridrževanja. Due to increasing complexity of products, existing technologies aren't always sufficient to produce quality parts. Fine blanking is a technology to produce parts in tight dimensional tolerance fields. In order to produce fine blanked parts, special triple action presses are required. Goal if diploma work was to develop a tool that would allow us to produce fine blanked parts on classic eccentric press. Work describes diffeneces between classic and fine blanking. Work includes crucial tool characteristics to produce a fine blanking tool, customized to work on classic eccentric press. Experiments were carried out on hydraulic presses. Two different materials of same thickness were used to analyze influence of cutting speed and counter force on the quality of cut surface and produced burr. We analyzed the influence of application of counter force with springs and with hydraulics. We learnt that both materials are applicable for fine blanking process, but there is a difference in quality of cut surface for different types of counter force application. fino štancanje izrezovanje ekscentrske stiskalnice hidravlične stiskalnice hitrost rezanja sila pridrževanja srh fine blanking cutting out eccentric presses hydraulic presses cutting speed counter force burr true false false [M. Koplan] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2019-11-10 07:45:04 2019-11-10 07:45:15 2023-11-10 12:44:43 0000-00-00 00:00:00 2019 0 Ljubljana 0 XXIV, 56 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 2020-11-08 621.797.07:621.226(043.2) 219640 16966427 4660.pdf 4660.pdf 1 15906F919D495C1A23909BD1C5B5AF0F 4e8654e5d9c54ce29ff675d56c8b7fbba49efbafbe567bc83956d92d15638240 f4174f23-a1b7-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=124688 Fakulteta za strojništvo 0 0 0