Recent researches showed the possibility of simulating with good accuracy cutting operations by means of FEM software. Typically, cutting operations under orthogonal cutting conditions are considered since the corresponding 2D model allows low computational time. However, when actual cutting operations are considered 3D models must be utilized. This paper deals with tool wear simulation using 3D FEM software. The relevance of simulating tool wear is due to the possibility of studying the influence of process parameters, tool material, tool geometry and workpiece material on tool wear without performing expensive experiments. For this purpose, a subroutine for updating the tool geometry was implemented into Deform 3D FEM software. The developed subroutine estimates wear rates according to analytical wear models and modifies the tool geometry as the wear goes on. In order to improve the accuracy of tool wear simulations, three different tool areas, namely rake, flank and cutting edge, were considered and suitable wear models together with appropriate tool mesh nodes movement strategies were selected for every zone. Preliminary results showing the ability of forecasting tool wear are reported at the end of this paper.

(2012). Algorithm for Tool Geometry Updating in 3D FEM Environment Considering the Tool Wear [conference presentation - intervento a convegno]. Retrieved from http://hdl.handle.net/10446/27749

Algorithm for Tool Geometry Updating in 3D FEM Environment Considering the Tool Wear

CAPPELLINI, CRISTIAN;GIARDINI, Claudio;
2012-01-01

Abstract

Recent researches showed the possibility of simulating with good accuracy cutting operations by means of FEM software. Typically, cutting operations under orthogonal cutting conditions are considered since the corresponding 2D model allows low computational time. However, when actual cutting operations are considered 3D models must be utilized. This paper deals with tool wear simulation using 3D FEM software. The relevance of simulating tool wear is due to the possibility of studying the influence of process parameters, tool material, tool geometry and workpiece material on tool wear without performing expensive experiments. For this purpose, a subroutine for updating the tool geometry was implemented into Deform 3D FEM software. The developed subroutine estimates wear rates according to analytical wear models and modifies the tool geometry as the wear goes on. In order to improve the accuracy of tool wear simulations, three different tool areas, namely rake, flank and cutting edge, were considered and suitable wear models together with appropriate tool mesh nodes movement strategies were selected for every zone. Preliminary results showing the ability of forecasting tool wear are reported at the end of this paper.
2012
Attanasio, Aldo; Ceretti, Elisabetta; Cappellini, Cristian; Giardini, Claudio; Poulachon, G.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10446/27749
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