Automatizacija računalnog modeliranja proizvoda od drva

undergraduate thesis

• Title (english): Computer aided design (CAD) automation of wood products
• Author: Marko Krajinović
• Mentor: Silvana Prekrat (mentor)
• Committee member: Silvana Prekrat (predsjednik povjerenstva)
• Granter: University of Zagreb; Faculty of Forestry and Wood Technology; (Institute of Furniture and Wood in Construction); Zagreb
• Defense date and country: 2021-09-24, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Wood Technology

Abstract

Predmet ovog rada je usporedba izrade tehničke dokumentacije tehnikom 2D crtanja i 3D modeliranja te istražiti mogućnost ubrzanja procesa projektiranja. Dokumentacija je izrađena za ladicu u programima AutoCAD za izradu crtanjem u dvije dimenzije te praogram Inventor u kojem je dokumentacija izrađena na temelju 3D modela. Usporedba je vršena prema izmjerenom vremenu, broju korištenih naredbi i broju i vrsti izlaznih datoteka. Dokumentacija izrađena 3D modeliranjem u Inventoru pokazala je bolje rezultate, zbog brzine izrade koja je dokazana izradom dokumentacije koja se sastoji od trodimenzionalnog prikaza, ortogonalne projekcije nacrta, tlocrta i bokocrta te detalja i presjeka na predlošku sa definiranim zaglavljem. U autoCAD-u je bilo potrebno 2 sata, 15 min i 28 sek, dok u Inventoru 37 min i 26 sek. Broj podudarnih naredbi u oba programa govori o kratkom vremenu prilagodbe i lakom prijelazu korištenja s AutoCAD-a na Inventor. Iako je u AutoCAD-u izrađen trodimenzionalni prikaz potrebno je naglasiti da on ne omogućava promjenu pozicije pogleda jer to nije stvaran 3D model kao onaj modeliran u Inventoru čime je omogućen prikaz bezbroj različitih postava u prostoru. Postavom tekstura i boja na 3D model proizvoda moguće izraditi pregledniju prezentaciju za naručioca proizvoda. Brzu prezentaciju omogućuje i način izvoza datoteka jer se model vrlo lako može prikazati kao fotografija ili kao priprema za 3D printanje i izradu na CNC strojevima. Velika prednost Inventora je povezanost modela i tehničkog crteža što omogućava promjenu u vrlo kratkom roku. Dokaz tome je izvedba 3 inačice ladice koje su se odnosile na promjenu dimenzije ladice izrađene za 1 min i 44 sek.

Abstract (english)

The subject of this paper is the comparison of the preparation of technical documentation using the technique of 2D drawing and 3D modeling and to explore the possibility of accelerating the design process. The documentation was created for a drawer in AutoCAD programs for creation by drawing in two dimensions and the Inventor program in which the documentation was created on the basis of a 3D model. The comparison was performed according to the measured time, the number of commands used and the number and type of output files. The documentation made by 3D modeling in Inventor showed better results, due to the speed of production proved by the creation of documentation consisting of a three-dimensional view, orthogonal projection of the draft, floor plan and side view and details and cross section on the template with defined header. It took 2 hours, 15 minutes and 28 seconds in autoCAD, while 37 minutes and 26 seconds in Inventor. The number of matching commands in both programs speaks of a short adjustment time and an easy transition of usage from AutoCAD to Inventor. Although threedimensional display is created in AutoCAD, it should be emphasized that it does not allow changing the position of the view because it is not a real 3D model like the one modeled in Inventor, which allows the display of countless different settings in space. By placing textures and colors on the 3D model of the product, it is possible to create a clearer presentation for the customer of the product. Fast presentation is also provided by the way files are exported, because the model can be easily displayed as a photo or as a preparation for 3D printing and production on CNC machines. A great advantage of Inventor is the connection between the model and the technical drawing, which allows for a change in a very short time. Proof of this is the performance of 3 versions of the drawer that related to changing the dimension of the drawer made in 1 min and 44 sec.

• Keywords: 2D crtanje; 3D modeliranje; tehnički crtež; CAD; namještaj
• Keywords (english): 2D drafting; 3D modeling; technical drawing; CAD; furniture
• Language: croatian
• URN:NBN: urn:nbn:hr:108:221035
• Study programme: Title: Wood Technology; Study programme type: professional; Study level: undergraduate; Academic / professional title: stručni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka drvne tehnologije (stručni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka drvne tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2021-10-19 12:36:44