Iskanje po katalogu digitalne knjižnice

Opis: This article presents the design, construction and educational application of a large-scale model representing renewable energy facilities that do not yet exist. The model features a circular layout with a diameter of 2 metres, divided into two halves: the Mokrice Hydropower Plant and a nuclear power plant with an accompanying low- and intermediate-level radioactive waste repository. The Mokrice half highlights key ecological and technical features, including two fish passages and a solar power plant installation, with realistic water effects achieved using epoxy resin. The nuclear half includes a removable low- and intermediate-level radioactive waste repository, allowing viewers to explore the storage arrangements via a cross-sectional view. All the components were fabricated using FDM 3D printing, assembled, finished with paint and landscaping materials, and mounted on a wooden base with a metal support structure. While the model was not intended to achieve exact technical scaling, it communicates complex energy infrastructures effectively, facilitating public understanding, awareness and dialogue about low-carbon technologies. The combination of additive manufacturing, interactive features and detailed landscape representation, demonstrates the value of models as tools for education, demonstration, and the promotion of sustainable energy solutions.
Ključne besede: model, nuclear power plant, hydro power plant, 3D printing, CAD
Objavljeno v DKUM: 20.01.2026; Ogledov: 0; Prenosov: 6
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Opis: Pred izdelavo stroja za lasersko graviranje je bilo potrebno izbrati želeno obliko in konstrukcijo. Izdelali smo osnovno skico, nato je sledila izdelava CAD modela. Ta model nam je omogočal preverjanje skladnosti raznih komponent med sabo. Vse plastične komponente stroja smo izdelali s pomočjo 3D tiska, pogonsko os pa s struženjem. Vse ostale komponente smo kupili (vijake, motorje, elektroniko). Stroj se giblje po X- in Y-osi, po Z-osi pa ga je mogoče nastavljati samo ročno. Glavni gibanji stroja se ne opravljata po vodilih, temveč se voziček vozi s kolesi po utoru profila. Gibanje se opravlja preko motorjev na jermena. Za to sta uporabljena dva motorja, ki ju krmili krmilnik na zadnji strani ohišja. Stroj mora biti med obratovanjem ves čas priključen na računalnik.
Ključne besede: CNC stroj, CAD model, lasersko graviranje, 3D tisk
Objavljeno v DKUM: 04.03.2025; Ogledov: 0; Prenosov: 91
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Opis: Diplomska naloga prikazuje konstruiranje, izdelavo in prikaz uporabe traktorskega medvrstnega obdelovalnika. Glavna naloga priključka je, da ob vrstah, v katerih so zasejane poljščine, enakomerno doziramo mineralna gnojila, hkrati pa med vrstami prezračimo prst in mehansko odstranimo plevel. Na podlagi zahtev, ki smo jih zastavili, je najprej potekala idejna zasnova celotne konstrukcije po posameznih segmentih. Dimenzioniranje in modeliranje priključka je bilo opravljeno v programu CATIA V5R16. Izdelava same tehniške dokumentacije in prikaz simulacije obremenitve celotne konstrukcije pa smo opravili s pomočjo CREO SIMULATOR-ja. V zadnjem delu naloge so napisana navodila za uporabo, izdelavo prototipa, preizkus priključka v realnih pogojih, vzdrževanje ter izračun približnih stroškov razvoja in izdelave celotnega priključka.
Ključne besede: CAD, dimenzioniranje, konstruiranje, dokumentacija, medvrstni obdelovalnik, prototip, strojništvo, realni model
Objavljeno v DKUM: 15.09.2016; Ogledov: 1309; Prenosov: 166
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Opis: One of the orientations of the tool-making industry is towards shortening the time from enquiry to the supply of tools. The tool-making shops must prepare within the shortest possible time an offer for the manufacturer of the tool based on the enquiry in the form of the CAD-model of the final product. For preparation of a proper offer, the values of certain technological features occurring in the manufacture of the tool are needed. Most frequently the tool manufacturer is interested in total cost for manufacture of the tool. Because of lack of time for making a detailed analysis the total costs of tool manufacture are predicted by the expert on the basis of the experience gathered during several years of work in this area. In our work, we conceived an intelligent system for predicting of total cost of the tool manufacture. We limited ourselves to tools for manufacture of sheet metal products by stamping; the system is based on the concept of case-based reasoning. On the basis of target and source cases, the system prepares the prediction of costs.The target case is the CAD-model in whose costs we are interested, whereas the source cases are the CAD-model of products, for which the tools had already been made, and the relevant total costs are known. The system first abstracts from CAD-models the geometrical features, and then it calculates the similarities between the source cases and target case. Then the most similar cases are used for preparation of prediction by genetic programming method. The genetic programming method provides the model connecting the individual geometrical features with total costs searched for. In the experimental work, we made a system adapted for predicting of tool costs used for tool manufacture on the basis of a theoretic model. The results show that the quality of predictions made by the intelligent system is comparable to the quality assured by the experienced expert.
Ključne besede: intelligent systems, prediction of costs, tool-making, stamping, CAD model, costs, genetic programming
Objavljeno v DKUM: 01.06.2012; Ogledov: 1951; Prenosov: 97
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