关键词: 振动, 金属切削, 虚拟制造, 物理仿真, 建模, 虚拟机床

Abstract: Aiming at the vibration of virtual lathe's cutting operations, an experiment was done. Based on experimental results, the cutting vibrations are decomposed into three parts, i.e. the random vibration, forced vibrations and the regenerated chatter, and each of them is modeled. The effect of spindle rotation on the amplitude responses of forced vibration is analyzed. The models developed are applied to NC simulation of cutting vibration process to predict the physical process of metal working by lathes, so as to improve the applicability of the virtual cutting software. Compared the results from simulation and from experiment for chattering process, the program developed can be regarded as reliable.