A method of using turning process excitation to determine dynamic cutting coefficients

作者：Mao Kuanmin^*; Zhu Ming; Xiao Weiwei; Li Bin

来源：International Journal of Machine Tools and Manufacture, 2014, 87: 49-60.

DOI：10.1016/j.ijmachtools.2014.08.002

• Dynamic cutting force coefficients
• Cutting process excitation
• Cutting process transfer function
• Turning
• Regenerative chatter
• Structural dynamics

Identification of the dynamic cutting force coefficients is an essential work in cutting process modeling. The excitation equipment employed to produce dynamic cutting process is usually sophisticated and may lead to potential error. An alternative method of turning process excitation is proposed to simplify the procedure of cutting dynamics measurement. A cantilever workpiece used in cylindrical turning process has been modeled with a double degree-of-freedom system that supports variable dynamic parameters. The structural dynamics of the equivalent system are analyzed with the theoretical derivation and the finite element simulations. The influence of structural dynamic variation on the chatter frequency is investigated, based on which the self-excited chatter is considered as a method of the turning process excitation. This method is applied in the cutting dynamics tests. The dynamic cutting force coefficients could be measured through a single chattering turning process. Stability analysis is conducted for verification of the measured dynamic cutting coefficients.

• 出版日期2014-12
• 单位华中科技大学