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Nadgradnja podajalnega sistema 3D tiskalnika
Sevšek, Luka (Author), Lebar, Andrej (Mentor) More about this mentor... This link opens in a new window, Valentinčič, Joško (Co-mentor)

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Abstract
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.

Language:Slovenian
Keywords:3D tiskanje, aditivne tehnologije, DLP projektor, stereolitografija, mikroreaktorji, mikrotehnologije
Work type:Master's thesis/paper (mb22)
Organization:FS - Faculty of Mechanical Engineering
Year:2018
Views:794
Downloads:682
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Secondary language

Language:English
Title:Upgrade of the 3D printer feed system
Abstract:
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.

Keywords:3D printing, additive technology, DLP projector, stereolitography, microreactors, microtechnology

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