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| 1 | Trajectory control strategy of cathodes in blisk electrochemical machining显示文摘A turbine blisk, which combines blades and a disk together, is one of the most important components of an aero engine. In the process of blisk electrochemical machining (ECM), the sheet cathode, which is usually used as a tool electrode, has a complicated structure. In addition to that, the channel between the adjacent blades is narrow and twisted, so interference is apt to happen when the sheet cathode feeds into the channel. Therefore, it is important to choose suitable trajectory control strategy. In this paper, a new trajectory control strategy of the sheet cathode is presented and corresponding simulation analysis is conducted on the basis of an actual blisk model. The simulation results demonstrate that the sheet cathode can feed into the channel by a spatial line trajectory without interference. Moreover, the verification experiments are carried out according to the simulation. The experimental results show that the cathode can move into the channel without interference. It is verified that the new trajectory control strategy is correct and can be used in the blisk ECM process successfully. | Zhu Dong Zhu Di Xu Zhengyang Zhou Laishui | 2013 | Chinese Journal of Aeronautics2013，26，4： | 14 |
| 2 | Uniform Coverage of Fibres over Open-contoured Freeform Structure Based on Arc-length Parameter显示文摘这篇文章使用弧长度参数路径计划在开轮廓的结构上执行机器的纤维放置(RFP ) 。这允许由更简单的算术用一个相同数学方程和计算代表起始的路径和偏移量点。在古典微分几何学的帮助下,放纤维的路径的计算可以在参量的域(参量地定义的模子表面) 或在 3D 空格(含蓄地定义的模子表面) 被归结为一阶的平常的微分方程的起始值的问题的答案,显著地从而在存在方法上改善。与常规方法相比,除它的计算简洁以外,建议方法在计算起始的路径和偏移量点有更好的错误控制机制。数字实验也被执行在合成形成的进程并且也表明新方法的可行性它在计算机的潜在的应用程序用机器制造的数字控制(计算机数值控制) ,表面修剪,和另外的工业惯例。 | Wang Xiaoping An Luling Zhang Liyan Zhou Laishui | 2008 | Chinese Journal of Aeronautics2008，21，6： | 7 |
| 3 | Constructing G^2 Continuous Curve on Freeform Surface with Normal Projection显示文摘This article presents a new method for G~2 continuous interpolation of an arbitrary sequence of points on an implicit or parametric surface with prescribed tangent direction and curvature vector,respectively,at every point.First,a G~2 continuous curve is constructed in three-dimensional space.Then the curve is projected normally onto the given surface.The desired interpolation curve is just the projection curve,which can be obtained by numerically solving the initialvalue problems for a system of first-order ordinary differential equations in the parametric domain for parametric case or in three-dimensional space for implicit case.Several shape parameters are introduced into the resulting curve,which can be used in subsequent interactive modification so that the shape of the resulting curve meets our demand.The presented method is independent of the geometry and parameterization of the base surface.Numerical experiments demonstrate that it is effective and potentially useful in numerical control (NC) machining,path planning for robotic fibre placement,patterns design on surface and other industrial and research fields. | Wang Xiaoping,An Luling,Zhou Laishui,Zhang Liyan Jiangsu Key Laboratory of Precision and Macro-manufacturing Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China | 2010 | Chinese Journal of Aeronautics2010，23，1： | 3 |
| 4 | Erratum to 'Uniform Coverage of Fibres over Open-contoured Freeform Structure Based on Arc-length Parameter' [Chinese Journal of Aeronautics 21(2008)571-577]显示文摘It is regretted that the author corrections requested at the proof stage were not made accurately. There are some incorrect typings in two equations which will lead to inaccurate results if readers perform calculations directly | Wang Xiaoping An Luling Zhang Liyan Zhou Laishui | 2009 | Chinese Journal of Aeronautics2009，22，3： | 2 |
| 5 | Novel method for exactly evaluating the energy of Catmull-Clark subdivision surfaces显示文摘 | Zhou Laishui | 2005 | Journal of Son-theast University2005，21，4： | 1 |
| 6 | Segmentation of scattered point data through a new curvature analysis algorithm 显示文摘 | He Meifang Zhou Laishui Zhang Liyan | 2004 | Journal of Southeast University2004，20，1： | 1 |
| 7 | Model reconstruction from cloud data显示文摘 | ZHANG Liyan ZHOU Rurong ZHOU Laishui | 2003 | Journal of Materials Processing Technology2003，138，： | 1 |
| 8 | A syetem for supporting rapid assembly modeling of mechanical products via components with typical assembly features显示文摘 | Li Guidong Zhou Laishui An Luling | 2010 | International Journal of Advanced Manufacturing Technology2010，46，： | 1 |
| 9 | A system for supporting rapid assembly modeling of mechanical products via components with typical assembly features显示文摘 | Li Guidong Zhou Laishui An Luling | | 0，，5： | 1 |
| 10 | A System for Supporting Rapid Assembly Modeling of Mechanical Products Via Components with Typical Assembly Features 显示文摘 | Li Guidong Zhou Laishui An Luling | 2010 | The International Journal of Advanced Manufacturing Technology2010，46，5678： | 1 |
| 11 | RESEARCH ON THE 3-AXES ROUGH MILLING OF MULTI-SURFACES显示文摘RESEARCHONTHE3┐AXESROUGHMILLINGOFMULTI┐SURFACESLiuZhuang,ZhangDeqiang,ZhouLaishui,ZhouRurong(ResearchCenterofCAD/CAMEngineeri... | Liu Zhuang, Zhang Deqiang, Zhou Laishui, Zhou Rurong (Research Center of CAD/CAM Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210026, China) | 1997 | Chinese Journal of Aeronautics1997，10，4： | 0 |
| 12 | RESEARCH AND REALIZATION OF MUTUAL TRIMMING OF NURBS显示文摘Since regular surface is defined by a mapping from 2-D parameter plane to 3-D space, trimming of NURBS surface is equivalent to changing a valid parameter region ofthe surface with the same mapping. In this paper, by presenting a rigid and comprehensi-ble definition of union, difference and intersection of two intersecting loops in the parame-ter region of NURBS surface, and by working out the corresponding algorithm, a rebui1d-ing algorithm of the valid parameter region of NURBS surface is obtained. | Shen Qingyun Zhou Laishui Zhou Rurong(Research Center of CAD/CAM Engineering, Nanjing University ofAeronautics and Astronautics, Nanjing, 210016, China) | 1997 | Chinese Journal of Aeronautics1997，10，2： | 0 |
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