[1] Huang Xiaodiao, Sun Qinghong, Fang Chenggang,. Effects of servo system on limited cutting widthin CNC heavy cutting [J]. Journal of Southeast University (English Edition), 2005, 21 (2): 159-164. [doi:10.3969/j.issn.1003-7985.2005.02.009]
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Effects of servo system on limited cutting widthin CNC heavy cutting(
)
数控强力切削中伺服系统对极限切削宽度影响的研究
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 21
- Issue:
- 2005 2
- Page:
- 159-164
- Research Field:
- Mechanical Engineering
- Publishing date:
- 2005-06-30
Info
- Title:
- Effects of servo system on limited cutting widthin CNC heavy cutting
- 数控强力切削中伺服系统对极限切削宽度影响的研究
- Author(s):
- Huang Xiaodiao1, Sun Qinghong2, Fang Chenggang1
-
1College of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing 210009, China
2Department of Mechanical Engineering, Southeast University, Nanjing 210096, China
- PACS:
- TH161
- DOI:
- 10.3969/j.issn.1003-7985.2005.02.009
- Abstract:
- A mathematical model of the computer numerical control(CNC)heavy cutting servo system including chatter in cutting courses was constructed for the chatter in CNC heavy cutting.The theoretical analysis, computer simulation and orthogonal tests on this model show that increasing the gain of position Kpp can improve the rapid tracking performance of machine tools, and decreasing the delay time of speed loop τs can quickly eliminate the static error in the system, but the limited cutting width blim will descend correspondingly;excessively large or excessively small gain of speed loop Kps can result in decreasing blim;optimizing Kpp, τs and Kps can improve the dynamic and static performance of the system and increase blimlim.It is easy and feasible to optimize the servo parameters by the orthogonal test.This method can effectively improve the system’s stability and limited cutting width and it is suitable for the CNC heavy cutting of heavy-duty machine tools.
- 针对数控强力切削中颤振问题, 建立了包含切削过程颤振环节的数控强力切削伺服系统数学模型.对模型的理论分析、计算机仿真及正交试验验证表明:增大位置环增益Kpp可提高机床快速跟踪性能, 减小速度环积分时间常数τs能迅速消除系统静差, 但极限切削宽度blimlim会随之而下降;过大或过小的速度环增益Kps都会导致blim下降;优化调节伺服系统Kpp, τs和Kps可提高系统的动、静态特性及blim.正交实验优化伺服系统参数方法简单可行, 能有效地提高切削系统稳定性和极限切削宽度, 适用于重型机床的数控强力切削.
References:
[1] Huang X D, Wang S Y, Sun B S.A model for optimization of cutting parameters in CNC turning process [J].Mechanical Science and Technology, 2002, 21(5):751-753.(in Chinese)
[2] Yang F L, Zhang B Y, Jun Y.Chatter suppression with multiple time-varying parameters in turning [J].Journal of Materials Processing Technology, 2003, 141(3):431-438.
[3] Ismail F, Ziaei R.Chatter suppression in five-axis machining of flexible parts [J].International Journal of Machine Tools and Manufacture, 2002, 42(5):115-122.
[4] Huang X D, Fang C G.Study on modeling and simulation of current regulator based on state feedback [A].In:Duan B Y, Tso S K, Bien Z Z, et al.eds.Proceedings of the First Asia International Symposium on Mechatronics Theory, Method and Application [C].Xi’an:Xidian University Press, 2004.356-361.
[5] Fang C G, Huang X D.The effect of chatter model on the analysis of steady-state error [J].Journal of Nanjing University of Technology, 2004, 26(6):58-62.(in Chinese)
[6] Li H Z, Li X P.Modeling and simulation of chatter in milling using a predictive force model [J].International Journal of Machine Tools and Manufacture, 2000, 40(14):2047-2071.
[7] Kwon H D, Burdekin M.Adjustment of CNC machine tool controller setting values by an experimental method [J].International Journal of Machine Tools and Manufacture, 1998, 38(9):1045-1065.
[8] Sungchul J, Koren Yoram.Adaptive fuzzy logic controller for feed drivers of a CNC machine tool [J].Mechtronics, 2004, 14(3):299-326.
[9] Ramesh R, Mannan M A, Poo A N.Tracking and contour error control in CNC servo systems [J].International Journal of Machine Tools and Manufacture, 2005, 45(3):301-326.
Memo
- Memo:
- Biography: Huang Xiaodiao(1952—), male, professor, njghxd@e165.com.