Estmation of the Pose-Dependent Stability Lobe Diagram for a new 5-axis Machining Concept

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International Journal of Engineering - ANNALS of Faculty Engineering Hunedoar, 15 (2): 99-104 (May 2017)


In this paper, the dynamic behavior of a lightweight 5 -axis milling concept is analyzed using finite element simulation. It has a pose -dep endent dynamic behavior with structural Eigen modes between 28 Hz and 50 Hz. Based on these results, the stability lobe diagrams (SLD) for the milling module at different axis -positions are derived. The milling module shows a changing process stability with a maximum critical cutting depth of 7.2 mm at “best case” position and 2.3 mm at “worst case” position. With a material removal simulation, the SLDs can be used to predict the process stability for unknown NC -programs.



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