5-Axis Flank Milling Tool Path Smoothing Based on Kinematical Behaviour Analysis

Abstract : In the context of 5-axis flank milling, the machining of non-developable ruled surfaces may lead to complex tool paths to minimize undercut and overcut. The curvature characteristics of these tool paths generate slowdowns affecting the machining time and the quality of the machined surface. The tool path has to be as smooth as possible while respecting the maximum allowed tolerance. In this paper, an iterative approach is proposed to smooth an initial tool path. An indicator of the maximum feedrate is computed using the kinematical constraints of the considered machine tool, especially the maximum velocity, acceleration and jerk. Then, joint coordinates of the tool path are locally smoothed in order to raise the effective feedrate in the area of interest. Machining simulation based on a N-buffer algorithm is used to control undercut and overcut. This method has been tested in flank milling of an impeller and can be applied in 3 to 5-axis machining.
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Submitted on : Saturday, September 24, 2011 - 9:07:45 AM
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Xavier Beudaert, Pierre-Yves Pechard, Christophe Tournier. 5-Axis Flank Milling Tool Path Smoothing Based on Kinematical Behaviour Analysis. 13th CIRP Conference on Modeling of Machining Operations, May 2011, Sintra, Portugal. pp.691-700, ⟨10.4028/www.scientific.net/AMR.223.691⟩. ⟨hal-00626189⟩

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