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
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https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=124688
Fakulteta za strojništvo
0
0
0