Abstract
Due to the constraint of tool wear, the low spindle speeds are usually adopted for the milling of the difficult-to-cut materials, such as AerMet100 and titanium alloy etc. for the stability boundary prediction, the process damping has significant influence in the low spindle speed region. The traditional stability analysis with considering process damping mainly focuses on the effect of waves on the workpiece surface caused by chatter, this paper study the influence of forced vibration on process damping and stability boundary in milling. The formula for calculating the amplitude of forced vibration based on frequency domain is derived, and then the relationship between forced vibration amplitude and spindle speed - cutting depth is analyzed. The process damping model with considering forced vibration is established and introduced to the classical stability prediction model, the simulation of stability boundaries with different cutting parameters are compared and analyzed. The simulation results show that the process damping generated by vibration forced results in a new stability boundary above the chatter region, which provides a new choice for cutting parameter optimization.
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Acknowledgment
This work was partially supported by the Natural Science Foundation of China (92160301, 52005201) and National Science and Technology Major Project of China under Grant No. J2019-VII-0001-0141.
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Jin, Y., Qu, H., Tang, X., Wang, M. (2023). Research on the Influence of Forced Vibration on Process Damping and Stability Boundary in Milling. In: Yang, H., et al. Intelligent Robotics and Applications. ICIRA 2023. Lecture Notes in Computer Science(), vol 14272. Springer, Singapore. https://doi.org/10.1007/978-981-99-6480-2_31
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