Effect of tool model on result of finite element simulation of high speed machining

• Autorzy: Markopoulos A. P. , Habrat W. , Galanis N. I. , Karkalos N. E.

Identyfikatory

DOI

10.2478/amst-2015-0020

Warianty tytułu

PL

Analiza oddziaływania modelu narzędzia na symulację numeryczną MES procesu skrawania z dużą prędkością (HSM)

• Języki publikacji: EN

Abstrakty

EN

The finite element method has been extensively used for the simulation of manufacturing processes and especially machining. In this paper, finite element models of high speed machining are presented. More specifically, orthogonal and oblique cutting models are presented, where the geometrical and material properties of the cutting tool are investigated. Orthogonal models pertain to the simulation of cutting with three different CBN tool types. Chip formation, cutting forces and temperatures are compared for each model, at the same cutting conditions. Additionally, 3D models are presented, where the back rake angle of the cutting tool is varied. From the results it may be concluded that 3D models provide more realistic results but they are computationally more demanding than 2D models. Finite element modelling of high speed machining can provide data for the process that would be either difficult or in some cases even impossible to obtain through extensive experimental work.

PL

W artykule określono oddziaływanie geometrii narzędzia na wyniki symulacji numerycznej skrawania z dużą prędkością. Przeprowadzono symulację numeryczną dla skrawania ortogonalnego 2D, dla trzech modeli narzędzi z CBN o różnej geometrii. Porównano podział modeli numerycznych narzędzi na elementy skończone oraz przedstawiono analizę procesu kształtowania wióra, wartości składowych siły skrawania, temperaturę w strefie skrawania oraz odkształcenie plastyczne w warstwie wierzchniej dla wybranych ich geometrii. Przeprowadzono również proces symulacji dla modelu skośnego 3D dla różnych wartości kąta pochylenia krawędzi skrawającej. Wyniki symulacji pozwoliły stwierdzić, że zastosowanie modeli 3D lepiej odzwierciedla rzeczywisty proces. Stawia jednak większe wymagania w zakresie obliczeń niż przy użyciu modeli 2D. Symulacja MES obróbki z dużą prędkością pozwoliła uzyskać wyniki, które mogą być trudne lub w niektórych przypadkach niemożliwe do uzyskania w ramach badań eksperymentalnych.

Słowa kluczowe

EN

cutting tools modelling; orthogonal cutting; 3D simulation; cutting forces; cutting temperature

PL

modelowanie narzędzi skrawających; skrawanie ortogonalne; symulacja 3D; siły skrawania; temperatura skrawania

• Wydawca: Komitet Budowy Maszyn PAN ; De Gruyter
• Czasopismo: Advances in Manufacturing Science and Technology
• Rocznik: 2015
• Tom: Vol. 39, nr 4
• Strony: 23--35
• Opis fizyczny: Bibliogr. 34 poz., rys.

Twórcy

autor

Markopoulos A. P.

• National Technical University of Athens, School of Mechanical Engineering, Section of Manufacturing, Technology, Heroon Politechniou 9, 15780, Athens, Greece

autor

Habrat W.

• Rzeszów University of Technology, 12 Powstańców Warszawy Str., 35-959 Rzeszów, Poland

autor

Galanis N. I.

• National Technical University of Athens, School of Mechanical Engineering, Section of Manufacturing, Technology, Heroon Politechniou 9, 15780, Athens, Greece

autor

Karkalos N. E.

• National Technical University of Athens, School of Mechanical Engineering, Section of Manufacturing, Technology, Heroon Politechniou 9, 15780, Athens, Greece

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