Optimizacija rezalnih parametrov za dosego ozkih toleranc pri obdelavi kaljenega orodnega jekla ob ustrezni izbiri frezala

Čerin, Domen (author), Kramar, Davorin (mentor)

V magistrskem delu je predstavljena optimizacija rezalnih parametrov pri obdelavi kaljenega orodnega jekla. Cilj naloge je doseči dimenzijsko točnost obdelovanca ob maksimalni obstojnosti orodja in čim večji produktivnosti. V magistrskem delu je opisana izdelava eksperimentalnega vzorca, lastnosti materiala in uporabljenega orodja, način vpetja obdelovanca, strategija obdelave, načrtovanje eksperimentov, meritve dimenzijskega odstopanja, optimizacija procesnih parametrov, potrditveni preizkus, preizkus obstojnosti frezal ter stroškovna analiza. Zaradi nestabilnega procesa frezanja smo z metodo načrtovanja eksperimentov analizirali vpliv vhodnih parametrov frezanja pri treh različnih frezalih. Na podlagi regresijskih modelov smo glede na naše kriterije optimirali rezalne parametre. Z optimalno nastavitvijo rezalnih parametrov za posamezno frezalo smo izvedli potrditveni test in preizkus obstojnosti. Z eksperimentom in analizami smo prišli do ugotovitev, kateri parametri imajo največji vpliv na kakovost izdelave in s katerim frezalom zagotovimo zanesljiv in stabilen proces ob čim večji produktivnosti.

• Language: Slovenian
• Keywords: frezanje, kaljeno orodno jeklo, dimenzijska točnost, načrtovanje eksperimentov, optimizacija rezalnih parametrov, obstojnost orodja
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [D. Čerin]
• Year: 2020
• Number of pages: XXII, 100 str.
• PID: 20.500.12556/RUL-117013
• UDC: 621.914:669.14(043.2)
• COBISS.SI-ID: 21293827
• Publication date in RUL: 19.06.2020

ČERIN, Domen, 2020, Optimizacija rezalnih parametrov za dosego ozkih toleranc pri obdelavi kaljenega orodnega jekla ob ustrezni izbiri frezala [online]. Master’s thesis. Ljubljana : D. Čerin. [Accessed 28 March 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=117013

Secondary language

• Language: English
• Title: Optimization of cutting parameters to achieve narrow tolerances for machining of hardened tool steel with suitable selection of milling tool

Abstract

In the master thesis the optimization of the cutting parameters by the milling of hardened tool steel is presented. The aim of the thesis is to achieve the dimensional accuracy of the workpiece with maximum resistance tool and the highest possible productivity. The master thesis describes the process of experimental sample, properties of the material and tolls used in the experiment, way of clamping the workpiece, processing strategy, the design of experiments, measurement of dimensioanal deviation, optimization of process parameters, confirmation test, durability test of the milling tool and cost analysis. Because of the unsteady process of milling, we analyzed the influence of the input parameters of milling by three different milling tools with the design of experiments methodology. Using regression models we optimized the milling parameters according to our criteria. With optimal settings of the cutting parameters for individual milling tools we performed confirmation experiment and durability test. With experiments and analyzes we came to the conclusion which parameters have the greatest influence on the production quality and with which milling tool guarantees a reliable and stable process with the highest possible productivity.

• Keywords: milling, hardened tool steel, dimensional accuracy, design of experiments, optimization of cutting parameters, tool life