Projektiranje naprave za oštrenje svrdala

master's thesis

• Title (english): Design of device for drills sharpening
• Author: Ivan Miklaužić
• Mentor: Damir Ciglar (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2017-07-20, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

U današnje vrijeme, gotovo da i ne postoji proizvodnja u kojoj se na izradcima ne primjenjuju barem neke operacije obrade provrta. Prilikom izrade provrta najčešće odabrani rezni alat je svrdlo, koje se prilikom upotrebe troši. Kako bi takvo svrdlo ponovno imalo jednaku funkcionalnost kao i prilikom prve upotrebe, potrebno ga je pravilno naoštriti. Zato je upravo tema ovog diplomskog rada projektiranje naprave za oštrenje svrdala.
Kod obrade provrta se koriste različite operacije, počevši redom od najčešće prve operacije, zabušivanja, pa sve do operacija dubokog bušenja. Sve operacije su zajedno s odgovarajućim reznim alatom prikazane i objašnjene u drugom poglavlju ovog rada.
U trećem poglavlju su prikazane karakteristike obrade provrta, kao što su vrste alata za bušenje provrta, parametri obrade pri izradi provrta i trošenje reznog alata.
Glavna tema ovog diplomskog rada obrađena je u četvrtom poglavlju, gdje je prikazana projektirana naprava za oštrenje svrdala u CAD programu. Dane su njezine karakteristike, te je izrađena sklopna i radionička dokumentacija za izradu naprave.
Jednako koliko je važna sama funkcionalnost naprave, važno je pravilno i stručno rukovanje, kako ne bi došlo do ozljeđivanja radnika, a to je objašnjeno u petom poglavlju.
Na temelju gore iznesenih poglavlja, na kraju rada je izveden zaključak o mogućnostima same naprave za oštrenje svrdala te njezine primjene u proizvodnji.

Abstract (english)

Today, almost every manufacturing process of CNC machined parts contains at least some of the drilling operations. Most common tool for drilling is head drill, which wears during exploitation. To maintain functionality like the first time it is used, it is recommended to sharpen it properly. That is why the subject of this master’s thesis is the designing process of head drill sharpening fixture.
Many of machining operations are used during drilling, starting from usually first operation, that is center drilling, all the way to the operations of deep hole drilling. Every of this operation and tools needed to perform them are explained in second chapter of this thesis.
In third chapter are explained characteristics of hole processing, to be more specific, types of tools for drilling, machining parameters for drilling and tool wear.
Main subject of this thesis is explained in chapter four, where it is given CAD presentation of head drill sharpening fixture. There have been explained technical characteristics of fixture and its assembly and manufacturing documentation.
Just like the functionality of the fixture, it is important to be operated and handled properly to prevent workers injuries. More on this subject will be explained in chapter five.
Based on all previous chapters, on the end of this thesis it is given a conclusion on possibilities and usability of head drill sharpening fixture and its application in manufacturing.

• Keywords: bušenje; oštrenje; spiralno svrdlo
• Keywords (english): drilling; head drill sharpening fixture
• Language: croatian
• URN:NBN: urn:nbn:hr:235:158359
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-05-22 19:44:46