20.500.12556/RUL-99561 Nadgradnja podajalnega sistema 3D tiskalnika Upgrade of the 3D printer feed system Tehnologija 3D tiskanja omogoča izdelavo kompleksnih izdelkov v relativno kratkem času. Vse bolj razširjeno postaja tiskanje na principu stereolitografije, pri kateri fotopolimer izpostavimo svetlobi in ga na želenih mestih na ta način strdimo. Strjevanje poteka plast za plastjo, pri čimer pomike prijemalne mize tiskalnika izvaja ustrezno nameščen podajalni sistem. Obravnavani prototip 3D tiskalnika temelji na omenjenem principu. Na prototip smo namestili podajalni sistem za majhne pomike. Z novo konfiguracijo smo natisnili preizkušance z ustreznimi oblikami geometrijskih značilnosti, na podlagi katerih bi lahko določili vpliv parametrov tiskanja na natančnost geometrijskih značilnosti in vpliv procesnih parametrov na najmanjšo dosegljivo dimenzijo mikrokanala. Zanimal nas je tudi vpliv predpriprave tiskalnika na tiskanje in stanja njegovih komponent na natančnost tiskanja. Za karakterizacijo geometrijskih značilnosti preizkušanca smo uporabili mikroskop in izmerili želene dimenzije. Ugotovljeno je bilo, da imata višina dviga med strjevanji in predvsem debelina nanešenega sloja največji vpliv. Ugotovili smo tudi močan vpliv neenakomernosti osvetlitve po delovnem področju tiskalnika, predpriprave prijemalne mize tiskalnika in stanja prosojne folije položene pod polimer. 3D printing technology allows for the production of complex products in a relatively short time. The use of stereolitography printing, in which the photopolymer is exposed to light and thus solidifies at desired spot, is increasing. The curing applies one layer at a time, whereby the printing surface is moved by a feed system. The prototype of printer we want to upgrade, is based on this principle. The upgrade includes installation of a new feed system for small movements. This new configuration would print test pieces with specific geometric shapes, which would show the influence of specific parameters on the printing accuracy of the shapes and the influence of process parameters on the smallest possible microchanel that can be manufactured. We also wanted to know if the preparation and the condition of printer components has any impact on the printing accuracy. To characterize the geometrical characteristics of the sample, a microscope was used and required dimensions were measured. It was found, that the lift height between curings and the thickness of one layer have the biggest impact. Illumination irregularities, the preperation of components and condition of the transparent foil also play a major role in printing accuracy. 3D tiskanje aditivne tehnologije DLP projektor stereolitografija mikroreaktorji mikrotehnologije 3D printing additive technology DLP projector stereolitography microreactors microtechnology true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2018-02-02 07:15:02 2018-02-02 07:15:13 2023-12-01 08:56:32 0000-00-00 00:00:00 2018 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 204282 1453.pdf 1453.pdf 1 3431F67FEF3811F2D43E7F693C78CA63 058df500d9f8bb0e891a9b69bcc177e65682d47cba730d32b6eb1d0c0d2eff2d 9876307b-a1b4-11eb-a523-00155dcfd717 20.500.12556/rul/d318b669-7a1d-4c95-8b7c-abc1d445faac https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=109074 1454.pdf 1454.pdf 1 A6E193FAA377BB819918063946670192 ff41bb34c50d783493ea8481ae64485ec885dcf6aeb15cb6d38157ff0d4620fb 988bacf9-a1b4-11eb-a523-00155dcfd717 20.500.12556/rul/7882bde6-1da1-4bfa-81ba-252d47dd53c3 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=109075 Fakulteta za strojništvo 0 0 0