Abstract
This paper investigates the dynamic behavior of the milling of complex shaped thin-walled components. As an interrupted cutting characterizes the milling process, a detailed study of the tool entrance point in relation to the vibration of the part is performed. Milling tests were performed on two thin-walled workpieces with different static and dynamic characteristics. The rigidity of the milling tool was much higher than the rigidity of the workpiece. End milling of thin-walled components deals with short cutting lengths, contributing to a decrease in the number of regenerative waves on the cutting surface. As a result, there is less than one regenerative wave beginning from relatively low spindle speed. Therefore, vibrations in high-speed milling of thin-walled structures are rather caused by resonance phenomenon than by self-excited oscillation. These findings have been supported by experimental validation where two thin-walled structures have been machined. The worst processing conditions occur when the tool impacts the workpiece when its amplitude of vibration is high.
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Acknowledgments
The authors are grateful to the Erasmus exchange program KA1, which supported the stay in Belgium of Ph.D. students Anton Germashev (Contract 000000076839) and Mark Kuchuhurov and their research at KU Leuven.
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Germashev, A., Vnukov, Y., Kuchuhurov, M., Logominov, V., Lauwers, B. (2021). Optimal Milling Conditions for Complex Shaped Thin-Walled Components. In: Ivanov, V., Trojanowska, J., Pavlenko, I., Zajac, J., Peraković, D. (eds) Advances in Design, Simulation and Manufacturing IV. DSMIE 2021. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-77719-7_37
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