Analysis of design and technological parameters on the example of milling cutter tool

Prvi dio diplomskog rada obuhvaća teorijski pregled podjele postupaka glodanja s obzirom na smjer glodanja, kvalitetu obrađene površine, oblik površine i položaj glodala. Objašnjen je postupak glodanja kao i podjela alata za glodanje na obradu zuba, oblik površine, način pričvršćenja na vreteno glodalice, smjer okretanja i izradu navojnih žljebova. Naglasak je dan i na pregled materijala za izradu alata glodala. Drugi dio rada obuhvaća modeliranje dvaju alata glodala primjenom CAD sustava za parametarsko modeliranje pomoću značajki. Ovi alati imaju jednake geometrijske značajke, ali jedan je presvučen prevlakom od Borox-a, a drugi je poliran. U radu je izvršena analiza simulacije glodanja kao i proračun naprezanja i pomaka (deformacija) oštrica alata glodala na primjeru primjene alata glodala na obratku izrađenom od aluminijske legure, koji se prema europskoj normi označava EN AW-7075 (AlZn5,5MgCu). Napravljen je analitički proračun tehnoloških parametara. Prema proračunom određenim tehnološkim parametrima i geometriji glodala, postavljeni su rubni uvjeti i ograničenja te izvršen numerički proračun primjenom metode konačnih elemenata u programskom paketu Ansys. Izvršena je usporedba rezultata i diskusija rješenja koje ima za cilj dati odgovor da li je bolje koristiti alat glodala presvučen prevlakom od Borox-a ili polirani alat glodala u postupku obrade obratka od aluminijske legure EN AW-7075.The first part of the thesis includes a theoretical overview of the division of milling procedures with regard to the direction of milling, the quality of the treated surface, surface shape and position of the milling cutter. The milling procedure is explained, as well as the division of milling tools with regard to tooth treatment, surface shape, method of attachment to the milling spindle, direction of rotation and production of threaded grooves. Emphasis is also placed on the review of materials for making milling tools. The second part of the paper involves modeling two milling tools using a CAD system for parametric modeling using features. These tools have the same geometric features, but one is coated with Borox and the other is polished. The paper analyzes the simulation of milling as well as the calculation of stress and displacement (deformation) of milling tool blades on the example of milling tools on a workpiece made of aluminum alloy, which according to European standards is EN AW-7075 (AlZn5,5MgCu). An analytical calculation of technological parameters was made. According to the calculation of certain technological parameters and geometry of the milling cutter, boundary conditions and restrictions were set and a numerical calculation was performed using the finite element method in the Ansys software package. A comparison of the results and discussion of a solution aimed at answering whether it is better to use a Borox-coated milling tool or a polished milling tool in the process of machining an aluminum alloy workpiece EN AW-7075