20.500.12556/RUL-109628 Izdelava in testiranje modula za merjenje premera curka pri obdelavi z AVC Development and testing of an instrument for measuring jet diameter during AWJ cutting Med procesom rezanja z AVC visoko hitrostni curek pod visokim tlakom pospeši abrazivne delce skozi šobo ozkega premera. Zaradi visoke kinetične energije curka se notranjost fokusirne šobe obrablja, posledično dobimo širši izstopni curek, kar ima vpliv na širino in natančnost reza. V magistrskem delu smo se lotili zasnove in izdelave modula, ki avtomatizira merjenje širine izstopnega curka z uporabo linijskega laserja na različnih oddaljenostih od fokusirne šobe. Meritve so bile izvedene s petimi različno obrabljenimi fokusirnimi šobami brez uporabe abraziva pri vodnem tlaku 275 MPa, z odprtim in zaprtim dovodom za abraziv in na dveh različnih rezalnih glavah. Z merjenjem na različnih oddaljenostih od šobe smo določili, kako se spreminja premer curka z oddaljenostjo in iskali korelacijo med obrabo šobe ter izstopno obliko curka. During AWJ cutting process, water under high speed is injected through an orifice into the cutting head, which accelerates abrasive particles through the focusing nozzle. Due to the high kinetic energy of the resulting jet, the inside of the focusing nozzle wears out and cutting accuracy is reduced. In this master's thesis an instrument for automated measuring of the jet diameter at different standoff distances is developed, where a thru-beam laser system is used as a measuring device. Measurements were performed with five differently worn nozzles at 275 MPa water pressure, with open and closed abrasive inlet and with two different cutting heads. By measuring the jet diameter at multiple standoff distances we investigated how diameter changes with increasing standoff distance and how nozzle wear can be attributed to the shape of the jet. abrazivni vodni curek fokusirne šobe merjenje obrabe linijski laserji natančnost obdelave abrasive water jet focusing nozzle wear characteristic thru-beam laser precision of machining true false false [T. Bevc] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2019-09-06 07:46:35 2019-09-06 07:46:37 2023-12-01 08:53:05 0000-00-00 00:00:00 2019 0 Ljubljana 0 XXII, 58 str., [4] str. pril. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.9.04:532.525:531.7(043.2) 215994 16914971 4115.pdf 4115.pdf 1 74921AA66F832F8A13109F7CB55762F8 f1fb2874d932caea8a6bfd0155caca85c7e4b2bd19823210614086b9ae9bbf57 ea044e09-a1b6-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=121211 4116.ino 4116.ino 1 EFCB0942CAB3C323697115E989737259 e9a02003cf67752dcbb709f1763edaa8e87a692361d339dc94dc0c2165cde573 ea14fef0-a1b6-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=121212 Fakulteta za strojništvo 0 0 0