Motor Current-Based Cutting Force Induced Error Detection and Modeling for CNC Milling Machine

Abstract:

The CNC milling machine is extensively used in manufacturing of the die and the box-type parts. As the increasing requirement of the mechanical products qualities, the components also need higher and higher precision. However, the cutting force induced error affects the machining accuracy of the machined parts seriously. Furthermore, accurate measurement of the cutting force in CNC machining is very difficult. To solve this problem, a motor current-based cutting force induced error detection and modeling method is proposed in this paper. The motor current is obtained from the window function of the Fanuc CNC system. The cutting force induced error model is established according to the least-square method. The motor current-based error model can implement the cutting force induced error fitting effectively, and the fitting accuracy of X, Y, and Z-axis are 97%, 96%, and 84%, respectively.

• Periodical: Advanced Materials Research (Volumes 889-890)
• Pages: 297-302
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.889-890.297
• Online since: February 2014
• Authors: Mu Wen Shen, Kai Guo Fan, Jian Guo Yang
• Keywords: CNC milling machine, Cutting Force Induced Error, Motor Current, Real-Time Detection

References

[1] O.E.E.K. Omar, T. El-Warddany, E. NG, et al: I.J. Machine Tools & Manufacture 47 (2007).

[2] K.G. Fan, J.G. Yang, et al: Chinese Journal of Mechanical Engineering 47 (2011).

[3] Y.H. Jeong, D.W. Cho: I.J. Machine Tools & Manufacture 42 (2002).

[4] S. Auchet, P. Chevrier, et al: I.J. Machine Tools & Manufacture 44 (2004).

[5] X.W. Liu, K. Cheng, et al: I.J. Machine Tools & Manufacture 22 (2002).

[6] H. Wu, GELVIS, et al: Machinery 43 (2005).