TEHNOLOGY FOR PRODUCTION POSITIONS ON A CNC AUTOMATIC LATHE STAR SB-20R TYPE G

U ovom diplomskom radu opisana je tehnologija proizvodnje pozicija na tokarskom CNC automatu Star SB-20R type G. U ovom slučaju obrađivan je čelik za automate Č4590, promjera 12 mm i duljine 3005 mm, a broj komada koji se radio je 100 000. Opisan je stroj, automatski dodavač materijala te je prikazan način uštimavanja stroja, odabir popratne opreme stroja i reznih alata. Prikazani su režimi pojedinih alate te njihova dugotrajnost na danim režimima. Na osnovu iskustvenih podataka i zaključaka napravljeno je optimiranje cjelokupnog NC programa. Dobiveni rezultati prikazani su u tablicama prije i nakon optimiranja. Na kraju rada uspoređena je kvaliteta proizvedenih komada sa postignutim uštedama u vremenu proizvodnje i potrošnji alata.This thesis describes the technology of production parts on the CNC lathe Star SB-20R type G. In this case processed was steel for automatic machines Č4590, diameter 12 mm and length 3005 mm, and the number of pieces worked was 100 000. The description includes the machine, the automatic material feeder, shown is the way of tuning the machine and selection of machine accessories and cutting tools. The regimes of individual tools and the longevity of the tools on the given regimes are shown. Based on experienced data and conclusions, the optimization of the entire NC program was made. The obtained results are shown in the tables before and after optimization. At the end of the paper, the quality of the pieces was compared with the savings achieved in the time of production and consumption of tools