Scanning Path Planning in Laser Bending of Tube Based on Curvature

Abstract:

A method is presented based on geometric-curvature characteristics in which a scanning path planning for laser bending of a straight tube into a curve tube in a two- and three-dimensional space. In a two-dimensional (plane) bending, the steel tube is divided into several segments according to the extreme point and inflection point of the desired shape of the tube, taking the extreme point as the initial place of the path planning, using different scanning space for every segment in order to identify the scanning paths. For a tube bending in a three-dimensional space, a projection decomposition method is used, where the three-dimensional is decomposed into two two-dimensions, and respective scanning path planning and process parameters are thus acquired. By combining the data in the two-dimensional planes, the three-dimensional scanning path plan was obtained. Finally, an experimental verification is carried out to bend straight tubes into a two-dimensional sinusoidal and a three-dimensional helical coil-shaped tube. The results show that the proposed method of scanning path planning is effective and feasible.

• Periodical: Advanced Materials Research (Volumes 264-265)
• Pages: 6-11
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.264-265.6
• Online since: June 2011
• Authors: Xu Yue Wang, Jun Wang, L.J. Wang, W.J. Xu, D.M. Guo
• Keywords: Geometric Curvature, Laser Bending, Scanning Path Planning, Steel Tube

References

[1] S. Safdar, L. Li, Finite element simulation of laser tube bending: Effect of scanning schemes on bending angle, distortions and stress distribution, Opt and Laser Technol, Vol. 39 (2007), 1101–1110.

DOI: 10.1016/j.optlastec.2006.09.014

[2] H. Yang, Y. Lin, Z.C. Sun, Advanced plastic processing technology research and development geared to the 21st century. The second academic Collection, Beijing, Sci and Technol Publishing House, (2000), 745-746.

[3] Q.S. Zhao, H. Yang, M. Zhan, State of the art of the bending process and research of tube, Metal Forming Process, Vol. 20 (2002), 8-15.

[4] Z.H. Peng, W.P. Gan. Development and application of aluminum material used for automotive industry, Automobile Process and Material, (1999), (4), 1-6.

[5] Y.J. Guan, S. Sun. Study on buckling mechanism of laser bending of the sheet metal, Laser Technol, Vol. 25 (2001), 11-13.

[6] S. Slive, W.M. Steen, B. Podschies, Laser forming tubes: a discussion of principles, Proceedings of ICALEO, Section E, (1998), 151-160.