Application of 3D scanning and DMLS manufacturing process in reversable engineering

Ovaj se rad bavi proučavanjem procesa povratnog inženjerstva i rekonstrukcije proizvoda za aditivnu proizvodnju, s naglaskom na 3D skeniranje i DMLS proizvodni postupak. Razvijena je metodologija za provedbu povratnog inženjerstva koja uključuje preoblikovanje proizvoda prema kriterijima aditivne proizvodnje. Provedena je analiza na studiji slučaja, gdje je kao primjer korišten zupčanik. Zupčanik je podvrgnut funkcijskoj i geometrijskoj analizi. Virtualni model dobiven 3D skeniranjem pretvoren je u CAD model te preoblikovan koristeći prednosti DMLS aditivne proizvodnje, uzimajući u obzir funkcije i geometrijska ograničenja koja mora zadovoljiti. Rekonstruirani proizvod izrađen je navedenim postupkom i skeniran kako bi se usporedio s početnim modelom te kako bi se provjerila uspješnost procesa povratnog inženjerstva.The topic of this thesis is the process of reverse engineering and reconstruction of products for additive manufacturing, with emphasis on 3D scanning and the DMLS manufacturing process. A methodology for reverse engineering has been developed, which includes the redesign of a product according to the design criteria for additive manufacturing. A case study analysis was performed, where a gear was used as an example. A gear was subjected to functional and geometric analysis. The virtual model obtained by 3D scanning was transformed into a CAD model and redesigned to incorporate the advantages of DMLS additive manufacturing, taking into account imposed functional and geometric constraints. The reconstructed product was made by the mentioned procedure and scanned to compare with the initial model and to check the success of the reverse engineering process