Machining chatter is an important factor of restricting high speed cutting, and chatter stability prediction is an effective method to avoid chatter by measuring the tool tip frequency response functions (FRF) in the X/Y directions of the machine tool coordinate system. As the complexity of the machine structure and uncertainty of tool path, the tool tip FRF is varied during the cutting process which therefore causes the variation of the stability charts and cutting parameter selection. The stability charts with different feed directions and spindle positions are investigated based on the modal test, and the machining performance of two machine tools of the same model are compared. Cutting tests are carried out in the end, and the machining stability performance along different feed directions is verified by collecting the sound signals of the machining. The results are beneficial to the chatter avoidance and cutting parameters selection in the real manufacturing process.
YANG Yi-qing LIU Qiang.
Analysis and experimental investigation into the cutting process stability of machine tool [J]. Journal of Vibration and Shock, 2014, 33(22): 101-105
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