Abstract
In milling and turning processes high speed rotation is used to decrease operation time; as a result, the cost of machining operation is as well reduced. In order to estimate the stability lobes and determine optimum cutting conditions, tool point Frequency Response Function (FRF) is required. Euler and Timoshenko beam models are employed in literature in order to obtain tool point FRF of spindle-holder-tool assemblies. However, due to the high speed rotation of spindle, it is also necessary to consider gyroscopic effects for the determination of tool point FRF. In this paper, spindle-holder-tool assembly is modeled by Timoshenko beam theory considering gyroscopic effects as well. Considering the analytical modal solution available in literature and structural coupling methods, FRF of the tool point is obtained. A case study is performed on an example of spindle-holder-tool assembly, which is as well modeled by finite elements in order to verify the results obtained by the continuous model. Next, using the continuous model, stability lobes are obtained for different spin speeds and the effect of gyroscopic forces are studied.
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© 2014 The Society for Experimental Mechanics
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Yılmaz, H., Cigeroglu, E. (2014). Effect of Spin Speed on Stability Lobes in High Speed Machining. In: Allemang, R., De Clerck, J., Niezrecki, C., Wicks, A. (eds) Topics in Modal Analysis, Volume 7. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-6585-0_38
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DOI: https://doi.org/10.1007/978-1-4614-6585-0_38
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