20.500.12556/RUL-102571 Analiza možnosti nadgradnje obstoječih 3-osnih obdelav s 4-osno visokohitrostno tehnologijo frezanja Analysis of the possibility of upgrading existing 3-axis processing with 4-axis high speed milling technology Številna podjetja se dandanes soočajo z obdelavo vedno bolj kompleksnejših obdelovancev. Pozicioniranje, vpenjanje in obdelava takih obdelovancev je zahtevna ter nam vzame veliko časa in denarja. Če želimo skrajšati čase in s tem stroške, je potrebno že v razvoju tehnoloških postopkov pomisliti na številne podrobnosti. V magistrski nalogi je predstavljen problem razvoja celotnega tehnološkega postopka strojne obdelave štirih različnih obdelovancev, ki sestavljajo sekalni rotor drobilnika lesa. V uvodnem delu naloge je predstavljeno ozadje problema in cilji raziskave. Sledi poglavje s teoretičnimi osnovami, ki so osnova za razumevanje problema. V nadaljevanju so opisani posamezni koraki izdelave tehnološkega postopka strojne obdelave. Prikazana in analizirana je dejanska obdelava obdelovancev na CNC obdelovalnem stroju. Izdelana je primerjava stroškov zunanje in lastne obdelave po razvitem tehnološkem postopku. Na podlagi primerjave je bila ugotovljena upravičenost lastne obdelave, saj so stroški lastne obdelave za 44,5 % nižji glede na zunanjo. Pri obdelavi ene serije pa prihranimo 1.394 €. Analizirana je amortizacijska doba izdelane vpenjalne priprave in ugotovljeno je, da za povrnitev stroškov izdelave moramo obdelati 36 obdelovancev. Na koncu so še predstavljene nadaljnje možnosti prihranka stroškov pri strojni obdelavi obravnavanih obdelovancev. Today many companies face the machining of increasingly complex workpieces. Positioning, clamping and machining of such workpieces is demanding and takes a lot of time and money. If we want to shorten the time and thus the costs, it is necessary to consider many details already in the development of technological procedures. The master’s thesis presents the development problem of the entire technological process of machining four different workpieces that make up the cutting rotor of the wood shredder. The introductory part of the paper presents the problem background and the research objectives. The following chapter addresses the theoretical foundations that are the basis for understanding the problem. The next chapter describes all the steps in the production of the technological machining process. The actual machining of the workpieces in the CNC machine is shown and analysed. A comparison of the costs of external and our own machining is made according to the developed technological process. Based on the comparison, the justification of our own machining was established, as the cost of our own machining is 44.5 % lower than the external one. With machining of one series, we save 1.394 euros. The depreciation period of the clamping device was analysed, and it was found that we need to machine 36 workpieces to be able to recover the manufacturing costs. Finally, further cost saving options are presented regarding the machining of the workpieces in question. frezanje konstruiranje CNC frezalni stroji vpenjalne priprave Mastercam rezalni parametri milling construction CNC milling machine clamping device Mastercam cutting parameters true false false [M. Duh] Slovenski jezik Angleški jezik Magistrsko delo 2018-09-02 07:46:36 2018-09-02 07:46:37 2022-08-15 03:42:36 0000-00-00 00:00:00 2018 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.914.3:658.5(043.2) 207483 16395803 2066.pdf 2066.pdf 1 2FDB0E70433F5829EC87653B1F2BDBB6 d56851eeb908d77b67d02e5d4bda133a4135b871cdfbfc534ba8cae5f8e704ac 8ec73217-a1b5-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=112909 Fakulteta za strojništvo 0 0 0