余量约束下的毛坯测量数据与CAD模型配准技术研究

中国机械工程 ›› 2013, Vol. 24 ›› Issue (10): 1357-1361,1380.

余量约束下的毛坯测量数据与CAD模型配准技术研究

王兴;张丽艳;李欢;谭高山

南京航空航天大学,南京,210016

出版日期:2013-05-25 发布日期:2013-05-28
基金资助:
国家自然科学基金资助项目(50875130)
National Natural Science Foundation of China（No. 50875130）

Research on Aligning Measured Data of Blank Parts to Nominal CAD Models under Machining Allowance Constraint

Wang Xing;Zhang Liyan;Li Huan;Tan Gaoshan

Nanjing University of Aeronautics and Astronautics,Nanjing,210016

Online:2013-05-25 Published:2013-05-28
Supported by:
National Natural Science Foundation of China（No. 50875130）

摘要/Abstract

摘要：

为在加工前剔除变形的不合格毛坯或在加工时避免由于定位不够精确而出现余量不足,需在余量约束要求下将毛坯测量数据与CAD模型进行配准。针对此配准问题，提出“二步法”求解：第一步暂不考虑余量约束，用ICP算法进行配准,检查结果是否满足余量要求,满足则退出计算，否则，进行第二步，即考虑余量约束对ICP结果作进一步配准。实验结果表明，该方法能够有效实现毛坯测量数据与CAD模型在余量约束下的配准。

关键词: 余量约束, 加工定位, 测量数据, 配准

Abstract:

In order to reject the unqualified blank parts before machining and avoid lack of allowance resulting from poor localization during machining, the measured data of blank parts must be aligned to the nominal CAD models under the machining allowance constraint.A 2-step algorithm was proposed to solve this alignment problem.Firstly,registration without considering any constraints was performed by the ICP(iterative closest point) algorithm.If the registration results meet the machining allowance requirements,the algorithm terminated;otherwise,the further registration considering allowance constraint was performed.Experimental results show that the proposed method is very appropriate for aligning the measured data of blanks to the nominal CAD models with the machining allowance guaranteed.

Key words: allowance constraint, machining localization, measured data, registration

中图分类号:

TH164

王兴, 张丽艳, 李欢, 谭高山. 余量约束下的毛坯测量数据与CAD模型配准技术研究[J]. 中国机械工程, 2013, 24(10): 1357-1361,1380.

WANG Xin, ZHANG Li-Yan, LI Huan, TAN Gao-Shan. Research on Aligning Measured Data of Blank Parts to Nominal CAD Models under Machining Allowance Constraint[J]. China Mechanical Engineering, 2013, 24(10): 1357-1361,1380.

参考文献

[1]Hong J Iran X.Method and Apparatus for Determi-ning Position and Orientation of Mechanical Ob-jects:US,5208763[P].1993-05-04.
[2]Chu Yunxian, Gou Jianbo, Kang H, et al.Perform-ance Analysis of Localization Algorithms [C]//IEEE International Conference on Robotics and Au-tomation.Albuquerque.1997:1247-1252.
[3]Chu Yunxian, Gou Jianbo,Wu H, et al.LocalizationAlgorithms:Performance Evaluation and ReliabilityAnalysis [ C]//IEKE International Conference onRobotics and Automation.Leuven, 1998:3652-3657.
[4]Li Zexiang, Gou Jianbo, Chu Yunxian.GeometricAlgorithms for Workpiece Localization [ J].IEEETransactiorivs on Robotics and Automation?1998?14(6):864-878.
[5]Zhou Kai, Zhao Jing.shan, Mao Dezhu.Research onan Intelligent Manufacturing System Based on anInformation-localizing Machining Jour-nal of Materials Processing Technology, 2002,129(1/3):597-602.
[6]Yan Sijie, Zhou Yunfei, Lai Xide,et al.Research onthe Localisation of the Workpieces with LargeSculptured Surfaces in NC Machining [J].Interna-tional Journal of Advanced Manufacturing Technol-ogy,2004,23(5/6):429-435.
[7]Chatelain J P', Fortin C.A Balancing Technique forOptimal Blank Part Machining [J].Precision Engi-neering,2001,25(1):13-23.
[8]Chatelain J F.A Level-based Optimization Algo-rithm for Complex Part Localization[J].Precision Engineering, 2005,29(2) : 197-207.
[9]曾艳.大型螺旋桨数控加工的在线测量与余量计算研究[D].华中科技大学,2005:
[10]马骊溟[1],姜虹[1],贠敏[1],王小椿[1].大型复杂曲面类毛坯加工定位的全局优化算法[J].系统仿真学报,2005,17(4):825-826.
[11]Sun Yuwen,Xu Jinting, Yuan Jiazhen,et al.A Uni-fied Localization Approach for Machining Allow-ance Optimization of Complex Curved Surfaces[J].Precision Engineering,2009,33(4):516-523.
[12]胡栋才,赵歆波,张定华,等.自适应遗传算法配准三维数字样品模型及其CAD模型[J].CT理论研究与应用,2008,17(2):8-14.
[13]戴静兰[1],陈志杨[2],叶修梓[1].ICP算法在点云配准中的应用[J].中国图象图形学报,2007,12(3):517-521. 4
[14]Besl P J, McKay N D.A Method for Registrationof 3-D Shapes[J].IEEE Transactions on PatternAnalysis and Machine Intelligence, 1992,14(2):239-256.
[15]Arun K S,Huang T S,Blostein S D.Least-squares Fitting of Two 3-D Points Sets[J].IEEETransactions on Pattern Analysis and Machine In-telligence ,1987,9(5):698-700.
[16]Horn B K P.Closed-form Solution of AbsoluteOrientation Using Unit Quaternions [J].Reprintedfrom Journal of the Optical Society of America A,1987,4(4):629-642.