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master's thesis
Sredstva za hlađenje, ispiranje i podmazivanje - utjecaj na sile rezanja kod bušenja kamena
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2019. urn:nbn:hr:235:364495
Družinec, Dino
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb

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Družinec, D. (2019). Sredstva za hlađenje, ispiranje i podmazivanje - utjecaj na sile rezanja kod bušenja kamena (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:364495

Družinec, Dino. "Sredstva za hlađenje, ispiranje i podmazivanje - utjecaj na sile rezanja kod bušenja kamena." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2019. https://urn.nsk.hr/urn:nbn:hr:235:364495

Družinec, Dino. "Sredstva za hlađenje, ispiranje i podmazivanje - utjecaj na sile rezanja kod bušenja kamena." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2019. https://urn.nsk.hr/urn:nbn:hr:235:364495

Družinec, D. (2019). 'Sredstva za hlađenje, ispiranje i podmazivanje - utjecaj na sile rezanja kod bušenja kamena', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 26 November 2024, https://urn.nsk.hr/urn:nbn:hr:235:364495

Družinec D. Sredstva za hlađenje, ispiranje i podmazivanje - utjecaj na sile rezanja kod bušenja kamena [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2019 [cited 2024 November 26] Available at: https://urn.nsk.hr/urn:nbn:hr:235:364495

D. Družinec, "Sredstva za hlađenje, ispiranje i podmazivanje - utjecaj na sile rezanja kod bušenja kamena", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:235:364495

Metadata
TitleSredstva za hlađenje, ispiranje i podmazivanje - utjecaj na sile rezanja kod bušenja kamena
Title (english)Cutting fluids - the influence on cutting forces at stone drilling
AuthorDino Družinec
MentorToma Udiljak (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2019-07-11, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Production Mechanical Engineering
Abstract
U posljednje vrijeme veliki se napor ulaže u istraživanja postupka obrade odvajanjem čestica skupine materijala nehomogene i anizotropne strukture, kakav je i kamen. Poznato je da na postupke obrade odvajanjem čestica izrazito negativno utječe oblik i odvođenje odvojene čestice iz zone obrade. Kamena odvojena čestica sitne je i praškaste strukture te ju je vrlo teško evakuirati iz zone obrade. Preliminarna istraživanja u laboratoriju za alatne strojeve pokazala su da njenim utjecajem, sila tijekom bušenja može narasti i do nekoliko puta, što rezultira intenzivnijim trošenjem alata i slabom energetskom učinkovitošću. U sklopu ovog diplomskog rada projektiran je i izrađen sustav za dobavu sredstva za hlađenje, ispiranje i podmazivanje koji ima mogućnost regulacije tlaka i protoka različitih medija. Nadalje, izrađena je programska podrška za obradu signala, filtriranje i izdvajanje značajki procesa obrade, te je na samom kraju proveden eksperimentalni dio rada s ciljem utvrđivanja koje sredstvo za hlađenje, ispiranje i podmazivanje i u kojoj mjeri ima najveći utjecaj na sile kod bušenja. Osnovni zadatak je minimizirati intenzitet trošenja reznih oštrica alata.
Abstract (english)
Lately, great efforts are being invested into research of material removal (machining) processes in relation to materials characterised by non-homogeneous and anisotropic structure, such as stone. Machining processes are very negatively influenced by the type and evacuation of the chips from the processing zone. The chip generated during stone machining has a minute and dusty structure, making its evacuation from the machining zone a very demanding task. Preliminary research at Machine tool laboratory showed that under the chip influence the drilling force could grow several times, resulting in a more intense tool wear and poor energy efficinecy. Within the frame of this graduate thesis, a system for obtaining cutting fluid for cooling, lubricating and chip flushing has been designed and developed. The system has the ability to control the pressure and volume of different media. Furthermore, software for signal processing, filtration and significant feature extraction was developed. Finally, an experimental part of the work was carried out aiming to determine which cutting fluid and at what extent had the greatest impact on drilling forces. The basic task is to minimize the wear intensity of cutting tools.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:364495
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2019-07-02 15:58:44