A Speed Smoothing Algorithm in Micro Segment High-Speed Machining

Abstract:

A forecasting speed smoothing algorithm based on inflexion velocity has been presented in this paper. According to the geometry characters of the machining trajectory, the inflexions in CNC machining tool path can be confirmed by using the designed algorithm. The line segment between each inflexion can be treated as a continuous path that can be tracked under the continuous feed rate. Moreover the maximal permitted link-up speed can be calculated through dynamic restriction equations and the real-time modification of sinusoidal acceleration can be realized by using the speed iteration algorithm. By simulation analysis, it can be revealed that both the flexibility and efficiency of the CNC machining has been improved and the impact to the machine tool has been greatly reduced.

• Periodical: Applied Mechanics and Materials (Volumes 190-191)
• Pages: 647-650
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.190-191.647
• Online since: July 2012
• Authors: Lei Luo, Jun Hu, Fan Deng
• Keywords: Inflexion, Interpolation, Micro Segment, Speed Smoothing

References

[1] P.Q. Ye, C. Shi, Interpolation of continuous micro line segment trajectories based on look-ahead algorithm in high-speed machining, Int. J. of Manufacture Technology, Vol. 37, pp.881-897, (2007).

DOI: 10.1007/s00170-007-1041-9

[2] J. Hu, L.J. Xiao, Y.H. Wang and Z.Y. Wu, An optimal feed rate model and solution algorithm for a high-speed machine of small line blocks with look-ahead, International Journal of Advanced Manufacturing Technology, Vol. 28, pp.930-935, (2007).

DOI: 10.1007/s00170-004-1884-2

[3] Y.H. Wang, L.J. Xiao, S.S. Zeng and Z.Y. Wu, An Optimal Feed rate Model and Solution for High—Speed Machining of Small Line Blocks with Look-ahead, Journal of Shanghai Jiaotong University, Vol. 38, pp.901-904, (2004).

[4] M.S. Tsai, H.W. Nien Development of an integrated look-ahead dynamics-based NURBS interpolator for high precision machinery, Computer-Aided Design, Vol. 40, pp.554-566, (2008).

DOI: 10.1016/j.cad.2008.01.015

[5] L.Y. Xu, Q. Jiang and W. Liu, Acceleration and deceleration control of laser engraving machine, Mechanical Engineers, Vol. 6, pp.94-96, (2007).