Tool Path Generation for Top Planar Surface of Ribs in Aircraft Structural Parts

Abstract:

In order to solve the problem regarding the rapid NC machining programming for top planar surface of ribs in aircraft structural parts, an approach based on skeleton extraction technique is presented here to generate tool path for top planar surface. Firstly, the constrained Delaunay triangulation is built to split the rib top planar surface into several sub areas and approximate skeleton branch of each sub area is extracted. Then based on these skeleton branches and process scheme, the set of machining cells of the rib top planar surface is constructed. Secondly, the problem on determining the sequence of machining cells is resolved by optimizing the machining path. Finally, the sequence of machining cells can be converted into the machining cells chain from which tool path can be calculated by CAM systems. Based on the experimental results of the comparison between the generalized pocket method and our approach, our approach is found to be more efficient in generating tool path for top planar surface of ribs.

• Periodical: Advanced Materials Research (Volume 630)
• Pages: 315-320
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.630.315
• Online since: December 2012
• Authors: Yun Long Tang, Guo Lei Zheng, Bao Rui Du, Shu Lin Chen
• Keywords: Aircraft Structural Part, Constrained Delaunay Triangulation, Rib, Tool Path

References

[1] Yuqing Fan, Modern Aircraft Manufacturing Technology, First ed., Beihang University Press, Beijing, (2001).

[2] Feng Tan, Research and Implementation on Rapid NC Programing Technology of Aircraft Structural Parts Rib Feature, D. Nanjing University of Aeronautics and Astronautics. (2010) 1-99.

[3] FangFang Yu, Research and Development of Rapid NC Machining Programming System for Aircraft Integral Panel, D. Beihang University. (2010) 1-111.

[4] S. L. Chen, G. L. Zheng, B. R. Du, et al, Process scheme based NC machining chain model for aircraft structural parts. International Conference on Information Science and Manufacturing Engineering, C. Chongqing. (2012. 4).

[5] H. Blum, A transformation for extracting new descriptors of shape, in : W. Whaten-Dunn(Eds), Models of the Perception of Speech and Visual Forms, MIT Press, Cambridge, 1967, 362-380.

[6] F M Wu, C L Chen, Mathematical model and algorithm of machining path optimized planning on aircraft structural parts, 8th Academic Forum for Graduate Students at Beihang University,C. Beijing, (2011. 4).

[7] B R Du, G L Zheng, et al, P.R. Chinese Patent, 200910220764(2010).