MECHANICAL ENGINEERING |
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Forced vibration response during the milling of thin-walled workpieces |
ZHANG Jie, LIU Chengying |
Beijing Key Lab of Precision/Ultra-precision Manufacturing Equipments and Control, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China |
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Abstract Strong forced vibrations can easily occur while milling thin-walled workpieces because of their low stiffness. Such vibrations not only reduce the product quality, but also limit the choose of the machining parameters. The forced vibrations of thin-walled workpieces during milling were investigated by using an R-end milling cutter to reduce the cutting forces and the cutting coefficients in cutting experiments. The dynamics of the thin-walled workpiece were analyzed based on modal experiments to obtain the transfer function and modal parameters of the tool-workpiece system. The forced vibration response was then predicted using a time-domain method. The simulations indicate that a proper nose radius can suppress the forced vibration response.
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Keywords
forced vibration response (FVR)
thin-walled workpiece
modal analysis
machining parameters
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Issue Date: 21 November 2018
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