中国机械工程 ›› 2010, Vol. 21 ›› Issue (02): 218-221.

• 机械基础工程 • 上一篇    下一篇

小径向切深铣削稳定性分析与验证

梁睿君;叶文华;黄翔
  

  1. 南京航空航天大学江苏省精密与微细制造技术重点实验室,南京,210016
  • 出版日期:2010-01-25 发布日期:2010-01-28
  • 基金资助:
    国家自然科学基金资助项目(50875127)
    National Natural Science Foundation of China(No. 50875127)

Analyses and Validation of Stability in Low Radial Immersion Milling

Liang Ruijun;Ye Wenhua;Huang Xiang
  

  1. Jiangsu Key Laboratory of Precision and Micro-Manufacturing Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016
  • Online:2010-01-25 Published:2010-01-28
  • Supported by:
    National Natural Science Foundation of China(No. 50875127)

摘要:

通过仿真方法分析了断续切削的动力学模型和稳定性预测模型的适用条件,分析了径向切深和附加Lobe对小径向切深铣削稳定性的影响及其深层原因。通过小径向切深的铣削试验,获得了切削振动的时域信号和频谱;结合高速切削和断续切削的周期分岔失稳理论,对模型预测结果进行了验证。仿真和试验研究结果表明:随着径向切深的减小,铣削稳定性提高;在小径向切深铣削中,稳定切削的转速区间增多。

关键词:

Abstract:

The fitting conditions for the dynamics model and the stability prediction model in the intermittent machining were presented by simulation analysis. The effects of the radial depth and the added Lobe on the stability in low radial immersion milling were analyzed, and the underlying causes of these effect phenomena were also analyzed. The model prediction results were validated by using the time-domain signal and the frequency spectrum of cutting vibration acquired from the low immersion milling experiments and using the periodic bifurcation instability theories for the high-speed and intermittent cutting. Simulation and experimental results show that the milling stability increases with the decrease of immersion and that the speed ranges of stable milling manifold in the low radial immersion.

Key words:

中图分类号: