Research on the Modeling Algorithm for the Camber of Large-Sized Revolving Parts
Present modeling algorithm for large-sized revolving parts’ camber can not ensure the smoothness, so a new modeling algorithm based on NURBS Curve was proposed in this study. In detail, the new modeling algorithm is as following: Firstly transfer these discrete points, which are measured along the part’s axial lead by equal distant, into a weighting unity sequence. Secondly filter this sequence by wavelet de-noising algorithm. Thirdly replace the discrete points’ amplitudes by the corresponding weights of filtered sequence, thus yield a group of new discrete points. Lastly calculate the control vertexes and weighting factors by local rational interpolation algorithm, and construct a spatial NURBS Curve through the new discrete points to obtain the model of large-sized revolving parts’ camber. It was experimentally confirmed that this model can represent drilling stem’s camber smoothly and improve its pressure straightening precision.
Chengyu Jiang, Geng Liu, Dinghua Zhang and Xipeng Xu
Z. Ruan et al., "Research on the Modeling Algorithm for the Camber of Large-Sized Revolving Parts", Materials Science Forum, Vols. 532-533, pp. 309-312, 2006