Counterbalance of cutting force for advanced milling operations

Nan Chyuan Tsai, Li Wen Shih, Rong Mao Lee

研究成果: Article同行評審

15 引文 斯高帕斯(Scopus)

摘要

The goal of this work is to concurrently counterbalance the dynamic cutting force and regulate the spindle position deviation under various milling conditions by integrating active magnetic bearing (AMB) technique, fuzzy logic algorithm and an adaptive self-tuning feedback loop. Since the dynamics of milling system is highly determined by a few operation conditions, such as speed of spindle, cut depth and feedrate, therefore the dynamic model for cutting process is more appropriate to be constructed by experiments, instead of using theoretical approach. The experimental data, either for idle or cutting, are utilized to establish the database of milling dynamics so that the system parameters can be on-line estimated by employing the proposed fuzzy logic algorithm as the cutting mission is engaged. Based on the estimated milling system model and preset operation conditions, i.e., spindle speed, cut depth and feedrate, the current cutting force can be numerically estimated. Once the current cutting force can be real-time estimated, the corresponding compensation force can be exerted by the equipped AMB to counterbalance the cutting force, in addition to the spindle position regulation by feedback of spindle position. On the other hand, for the magnetic force is nonlinear with respect to the applied electric current and air gap, the characteristics of the employed AMB is investigated also by experiments and a nonlinear mathematic model, in terms of air gap between spindle and electromagnetic pole and coil current, is developed. At the end, the experimental simulations on realistic milling are presented to verify the efficacy of the fuzzy controller for spindle position regulation and the capability of the dynamic cutting force counterbalance.

原文English
頁(從 - 到)1191-1208
頁數18
期刊Mechanical Systems and Signal Processing
24
發行號4
DOIs
出版狀態Published - 2010 五月

All Science Journal Classification (ASJC) codes

  • 控制與系統工程
  • 訊號處理
  • 土木與結構工程
  • 航空工程
  • 機械工業
  • 電腦科學應用

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