通过分析以往实验数据、对比机床动态切削新老模型和引进闭环系统观点 ,证明只需要在切削过程子模型中考虑切削振动位移的影响 ,多质量多自由度整体模型会自动体现切削力与切削振动间的相位差别 .建立了相位差别同机床结构动态特性间的函数关系 ,阐明新模型还包含了再生效应、当前与先前切削振动间的相位差别 ,可以描述有限振幅不稳定切削 ,体现了振型关联效应 By analyzing the experimental data, comparing the dynamic and dynamic cutting of new and old models with the introduction of closed-loop system, it is proved that only the influence of cutting vibration displacement should be considered in the cutting process sub-model. The multi-mass and multi-degree of freedom model can automatically reflect cutting force and cutting vibration The phase difference is established as a function of the dynamic characteristics of the machine tool structure. The new model also includes the regeneration effect, the phase difference between the current and the previous cutting vibration, which can describe the unstable cutting with finite amplitude, Correlation effect