Design and machining of the handle for hand drill

Zadatak ovog Završnog rada je dizajniranje i obrada drške ručne bušilice. Dršku je prvo potrebno dizajnirati u CAD sustavu te potom postaviti sve potrebne parametre obrade u CAM sustavu. Da bi se pravilno postavili parametri obrade glodanja za ovaj izradak, bitno je poznavati osnove rada računalnih programa i princip rada obradnih strojeva. CAD/CAM programski paketi smanjuju vrijeme konstruiranja proizvoda, izrade crteža te je brža i jednostavnija izrada NC programa za složene geometrije proizvoda. Video simulacijom se mogu detektirati kolizije alata i obratka pa se može ukazati na problem prije nego li se NC program unese u stroj. U praktičnom dijelu rada objašnjeno je na koji način su definirane operacije obrade te je prikazano kako obradak izgleda nakon svakog stezanja. Također, provedena je analiza obrađenih površina kako bi se utvrdilo jesu li obrađene površine u granicama tolerancije. Nadalje, prikazan je pregled alata korištenih u obradi te režimi obrade za pojedini alat. Kao dodatak, dio obrade drške ručne bušilice izradio se na CNC glodalici.The task of this final work is to design and machine handle for hand drill. The handle first needs to be designed in CAD system and then it is necessary to set up all the machining parameters in the CAM system. To properly set the parameters of the milling process to produce this workpiece, it is important to know the basics of computer programs and working principle of machine tools. CAD/CAM software packages reduce the time of construction products, drawing production and it is faster and easier to create NC programs for complex geometry. Video simulation can detect the collision of the tool and the workpiece and indicate a problem before the NC program is entered into the machine. In the practical part of this paper, it is explained how the operations are defined and it is shown how workpiece looks after each contraction. Also, an analysis of processed surfaces is made to determine whether they are within the tolerance limits. Furthermore, it is shown a review of tools used in machining operations and machining regimes for each tool. In addition, one part of the machining is made on the CNC milling machine