20.500.12556/RUL-92944 Optimizacija izdelave pestiča za hladno preoblikovanje Manufacturing Process Optimization of the Cold Forming Tool V orodjarni podjetja smo optimizirali izdelavo pestiča za hladno preoblikovanje. Namen magistrske naloge je dobiti najučinkovitejši tehnološki postopek. Pestič mora pri tem doseči dimenzijsko natančnost, ustrezno hrapavost in trdoto. Seveda gledamo tudi na stroške izdelave, saj bomo na podlagi tega v nadaljevanju izdelovali pestiče. Izdelali smo različne tehnološke postopke. Prvi postopek je ustaljen postopek, po katerem zdaj izdelujemo pestiče. Drugi tehnološki postopek izključuje okroglo zunanje brušenje, dodali smo pa struženje na končne mere. Pri tretjem tehnološkem postopku smo prav tako izpustili okroglo zunanje brušenje, vendar smo stružili obdelovanec v trdo na končne mere po toplotni obdelavi. Pestič smo prav tako kakovostno izdelali, vendar so se stroški struženja zaradi dolgega časa obdelave povečali. Ta postopek je najdražji. Pri primerjavi vseh postopkov smo ugotovili, da je drugi način izdelave najcenejši in dosega predpisane zahteve. Izognili smo se brušenju, s tem smo odstranili nova prevpenjanja med stroji ter ponovna pozicioniranja in centriranja. Razbremenili smo CNC brusilni stroj za druge projekte. In a tool workshop of a factory, a manufacturing process optimization of the cold forming tool has been carried out. The aim of the thesis is to find out which technology is the most effective and results in dimensional accuracy, surface roughness and hardness of the cold forming tool. The overall production costs are also of high importance, as they determine the future manufacturing of the cold forming tools. We have designed various process methods. The first one represents a fixed procedure for the production of cold forming tools. The second one excludes external round grinding, but by adding hard turning, we obtained the dimensional accuracy. The third technology plan as well excludes external round grinding, but we decided to heat threat the workpiece and carry out hard turning, obtaining the dimensional accuracy. The result was of high quality, but the production costs have risen due to long-lasting process. Therefore, the third method is the most expensive. The comparison of the listed process methods has shown that the second operation carries the lowest costs and is in accordance with the laws. As we do not have to carry out the grinding operation, there is no need for unloading and reloading the workpiece again or its positioning and centring. As a result, the CNC grinding machine is available for other projects. pestič hladno preoblikovanje optimizacija tehnološki postopki CNC obdelava orodjarna cold forming tool cold forming optimization technologies CNC operation process tool workshop true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2017-07-11 09:20:28 2017-07-11 09:20:30 2022-08-10 01:21:48 0000-00-00 00:00:00 2017 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 189584 442.pdf 442.pdf 1 FC8327302A0CC2655D1F27B8470104D6 7b9a1891f6a53da7abee84aca765e74de6556895bab3b24e370a8020bf843211 76b91648-a1b3-11eb-a523-00155dcfd717 20.500.12556/rul/2f963829-cfb2-4cec-9c9e-42c1d9319f96 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=101110 Fakulteta za strojništvo 0 0 0