Abstract
Chatter usually occurs in cutting of thin-walled workpiece due to poor structural stiffness, which results in poor surface quality and damaged tool. Aiming at process damping caused by interference between a tool flank face and a machined surface of thin-walled part, the dynamic model and critical condition of stability are proposed by the relative transfer functions, when both the tool structure and the machined workpiece have similar dynamic behaviors in this paper. Using the frequency method to solve the stability of the cutting chatter, it can be seen that the process damping can significantly improve the stability of the low speed region. Moreover, the stability domain is different and more exact than the one that derives from the simple superposition of the tool and the workpiece lobe diagrams. The correctness of the model is validated by experiments. These conclusions provide a theoretical foundation and reference for the milling mechanism research.
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Liu, B., Zhu, L., Dun, Y. et al. Investigation on chatter stability of thin-walled parts in milling based on process damping with relative transfer functions. Int J Adv Manuf Technol 89, 2701–2711 (2017). https://doi.org/10.1007/s00170-016-9431-5
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DOI: https://doi.org/10.1007/s00170-016-9431-5