Izrada računalnih prikaza sklopova proizvoda tehnologijama povratnog inženjerstva

undergraduate thesis

• Title (english): Creation of computer representations of product assemblies using reversible engineering technologies
• Author: Ivan Perković
• Mentor: Mario Štorga (mentor)
• Mentor: Tomislav Martinec (komentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2023-03-01, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; General Mechanical Engineering (Construction)

Abstract

Ovaj završni rad bavi se izradom računalnih prikaza sklopova proizvoda korištenih u svrhu
analize funkcija, korištenih materijala, strukture i proizvodnih procesa. Cilj rada je bio osmisliti
metodologiju za izradu računalnih prikaza sklopova proizvoda korištenjem tehnologija
povratnog inženjerstva i to prvenstveno tehnologije 3D skeniranja uz konstrukciju
jednostavnijih komponenata CAD modeliranjem. Opisana je tehnologija 3D skeniranja i uređaji
dostupni u Laboratoriju za konstruiranje – CADLab na Fakultetu strojarstva i brodogradnje.
Metodologija obuhvaća izbor odgovarajućeg skenera prema veličini komponente i zahtjevima
na razlučivost modela, proces skeniranja i obradu dobivenih podataka. Obrada podataka
uključuje čišćenje i poklapanje oblaka točaka, rekonstrukciju površine te definiranje boje.
Optimizacija mreže za smanjenje potrebnih računalnih resursa za prikaz ostvarena adaptivnim
smanjenjem broja trokuta uz tolerirano odstupanje od početne. Jednobojnim komponentama
moguće je dodijeliti boju, dok je komponente složenijih boja potrebno ručno teksturirati. Za
obradu oblaka točaka, rekonstrukciju površine i teksturiranje korišten je Meshlab, dok je za
izradu sklopova, optimizaciju mreže i dijeljenje prikaza korišten Fusion 360. Izrađena
metodologija prikazana je na primjeru sklopa Bosch puhalice za lišće.

Abstract (english)

This undergraduate thesis deals with the creation of computer representations of product
assemblies used for the purpose of analysis of functions, used materials, its structure and
manufacturing processes. The goal of the thesis was to design a methodology for creating
computer representations of product assemblies using reverse engineering technologies,
primarily 3D scanning technologies, along with the construction of simpler components by the
means of CAD modeling. 3D scanning technology and available devices in the Design
Laboratory – CADLab at the Faculty of Mechanical Engineering and Naval Architecture are
described. The methodology includes the choice of the appropriate scanner according to the
size of the component and the requirements for the resolution of the model, the scanning process
and the processing of the obtained data. Data processing includes cleaning and aligning point
clouds, surface reconstruction and color assignment. Optimization of the mesh to reduce the
necessary computer resources for its display is achieved by adaptively reducing the number of
triangles with a tolerated deviation from the initial surface. Monochromatic components can be
assigned a color, while components with more complex colors need to be manually textured.
Meshlab was used for point cloud processing, surface reconstruction and texturing, while
Fusion 360 was used for assembly creation, mesh optimization and model sharing. Use of the
developed methodology is shown on the example of a Bosch leaf blower assembly.

• Keywords: 3D skeniranje; oblak točaka; mreža; računalni prikaz proizvoda
• Keywords (english): 3D scan; point cloud; mesh; computer product representation
• Language: croatian
• URN:NBN: urn:nbn:hr:235:873916
• Study programme: Title: Mechanical Engineering; specializations in: Design, Process and Energy Engineering, Production Engineering, Engineering Modelling and Computer Simulation, Marine Engineering, Industrial Engineering and Management, Materials Engineering; Course: Design; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-02-23 08:20:26