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Optimizacija priprave modela za 3D-tisk na tiskalniku z LED projekcijo
ID Špendl, Filip Jakob (Author), ID Muck, Deja (Mentor) More about this mentor... This link opens in a new window

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Abstract
V diplomskem delu je podrobneje predstavljena tehnologija polimerizacije v kadi. Konkretno smo se usmerili v preučitev delovanja 3D tiskalnika Photocentric Liquid Crystal Pro. Omenjen tiskalnik uporablja LCD zaslon za utrjevanje slojev in gradnjo predmeta. Zaslon deluje v območju valovanja vidne svetlobe, zato se za proces tiska največkrat uporabljajo polimeri, ki se utrjujejo pod vplivom vidne svetlobe. Z namenom spoznavanja prednosti in omejitev omenjene tehnologije smo raziskali vpliv različnih parametrov na končno kakovost tiskanih predmetov. Za ta namen smo izbrali pet modelov z različnimi značilnostmi, s katerimi smo kvalitativno in kvantitativno ocenili vpliv različnih parametrov na končno kakovost tiska. Pri zaporednem tisku predmetov smo spreminjali čas osvetljevanja, debelino stene, orientacijo modela in pozicijo podpor. Ugotovili smo, da se različne oblike detajlov na površini predmetov različno odzivajo na spremembe parametrov. Izbočeni detajli, kot so paličice in trakovi, so boljše vidni pri tisku z daljšim časom osvetljevanja. Obratno pa kakovost vbočenih detajlov z daljšim časom osvetljevanja pada. S povečanjem naklona predmeta glede na delovno platformo, s čimer se poveča število slojev, izboljšamo vse vrste detajlov. Razlika prosojnosti med predmetoma z debelino stene 2,0 mm in 3,0 mm je bila zanemarljiva, s čimer lahko prihranimo na materialu. Avtomatske podpore so nezanesljive. Ustrezna orientacija modela in prostoročna postavitev podpor omogoča kakovostnejši tisk predmetov, še posebej tistih, ki vključujejo veliko detajlov. Po rotaciji modela v optimalno lego nismo opazili pomembnih razlik med avtomatsko in ročno generiranimi podporami. Diplomsko delo služi kot priročnik za lažje delo na tiskalniku Photocentric Liquid Crystal Pro.

Language:Slovenian
Keywords:Stereolitografija, optimizacija tiska, 3D-tisk
Work type:Bachelor thesis/paper
Organization:NTF - Faculty of Natural Sciences and Engineering
Year:2024
PID:20.500.12556/RUL-154182 This link opens in a new window
Publication date in RUL:30.01.2024
Views:360
Downloads:43
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Secondary language

Language:English
Title:Optimization of model preparation for 3D printing on Photocentric Liquid Crystal Pro
Abstract:
In our thesis, we optimized the print parameters of the Photocentric Liquid Crystal Pro 3D printer to improve print quality. The models differ from each other and require optimal printing conditions while surface errors are most noticeable. For the purpose of optimization, we selected five models with different characteristics, with which we qualitatively and quantitatively evaluated the impact of parameter changes on printing. In consecutive prints of the objects, we changed one of the parameters and monitored its effect on the objects. We were changing exposure time, support locations, wall thickness and orientation of the printed object. We found that different shapes of details on the surface of the objects respond differently to parameter changes. Raised details, such as bars and stripes, are better visible in prints with longer exposure time. Conversely, the quality of concave details decreases with longer exposure time. Increasing the inclination of the model relative to the work platform, thereby increasing the number of layers, improves all types of details on the infinite plate object. The cost of better printing is the need for support and longer printing time. The difference in transparency between objects with a wall thickness of 2,0 mm and 3,0 mm was negligible, which allows us to save on material. Automatic support generation is, despite saving some time, unreliable, and their success rate can be improved by manually rotating the model based on its shape. After rotating the model to the optimal position, we did not notice significant differences between automatically and manually generated supports. The thesis serves as a recommendation for all further prints on the Photocentric Liquid Crystal Pro printer.

Keywords:Stereolithography, Print Optimization, 3D Printing

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