Suppressing vibration modes of spindle-holder-tool assembly through FRF modification for enhanced chatter stability
Mohammadi, Yaser and Azvar, Milad and Budak, Erhan (2018) Suppressing vibration modes of spindle-holder-tool assembly through FRF modification for enhanced chatter stability. CIRP Annals - Manufacturing Technology, 67 (1). pp. 397-400. ISSN 0007-8506 (Print) 1726-0604 (Online)
Official URL: http://dx.doi.org/10.1016/j.cirp.2018.03.003
Modifying dynamic response of a machine tool is of great importance for chatter mitigation. Tool tip frequency response function (FRF) can be suppressed by capitalizing on the absorber effect due to dynamic interactions among vibration modes of spindle, holder and tool. In this paper, a practical method is presented to modify the system’s FRF by selecting proper dimensions for assembly component without extensive testing. Robustness of the method is demonstrated through simulation and test results. Milling stability tests were also conducted where significant improvements in chatter free Material Removal Rate (MRR) is achieved.
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