[1]王晓飞 ,刘胜兰,张丽艳,等.整体叶轮三坐标测量机的分步精细定位方法[J].南京理工大学学报(自然科学版),2012,36(06):0.
 WANG Xiao fei,LIU Sheng lan,ZHANG li yan,et al.Stepwise Refinement Localization Method for Impeller Inspectionon Coordinate Measuring Machine[J].Journal of Nanjing University of Science and Technology,2012,36(06):0.
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整体叶轮三坐标测量机的分步精细定位方法
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
36卷
期数:
2012年06期
页码:
0
栏目:
出版日期:
2012-12-31

文章信息/Info

Title:
Stepwise Refinement Localization Method for Impeller Inspectionon Coordinate Measuring Machine
作者:
王晓飞 12刘胜兰 3张丽艳 3秦洁 2
1.天津大学 精密测试技术及仪器国家重点实验室,天津 300072;2.江苏省计量科学研究院,江苏 南京 210007; 3.南京航空航天大学 机电学院,江苏 南京 210016
Author(s):
WANG Xiaofei 12LIU Shenglan 3ZHANG liyan 3QIN Jie 2
1.State Key Laboratory of Precision Measuring Technology and Instruments,Tianjin University,〖HJ*2〗 Tianjin 300072,China;2.Jiangsu Institute of Metrology,Nanjing 210007,China; 3.College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
关键词:
整体叶轮三坐标测量机精细定位配准精度
Keywords:
impellerscoordinate measuring machinesrefinement localizationregistration accuracy
分类号:
TG806
摘要:
针对整体叶轮三坐标测量难以精确定位的问题,该文提出一种分步精细定位方法。根据对定位约束的影响和成形精度对整体叶轮上的曲面进行分类,确定测量基准面。利用基准面对整体叶轮工件进行初定位,使测头能够顺利接触工件并实现测量。获得测量点后,通过测量点与模型的配准精细定位。将配准定位矩阵在六个自由度上进行分解,只对其中部分自由度进行约束,获得优化的定位结果。对某轴流式整体叶轮进行实验,结果表明该文的精细定位提高了叶片部位的配准精度。
Abstract:
Aiming at the problem of being difficult to locate impellers accurately for coordinate measuring machine inspection,a stepwise refinement localization method is proposed.The surfaces on the impellers are cataloged according to their influences on the localization constraints and the accuracies of their workpieces,and the measurement datum is defined.The whole impeller workpiece is initially located using the measurement datum,and the probe can contact the workpiece and capture the data points.After obtaining the measuring points,the refinement localization can be realized by registration between the measuring point and the model.A registration matrix is decomposed on six degrees of freedom,constraints are applied only on some degrees,and a more accurate result is achieved.An experiment on localizing an axialflow impeller is presented,and the result shows that the accuracies of the blades are improved after the refinement process.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2012-07-20修回日期:2012-10-21 基金项目:国家技术监督总局2011年度科研计划项目(2011QK124) 作者简介:王晓飞(1971-),女,博士生,高级工程师,主要研究方向:精密几何量测量、三坐标测量,Email:ycdywxf@163.com;通讯作者:刘胜兰(1972-),女,博士,副教授,主要研究方向:数字化设计与制造、数字化测量、逆向工程,Email:meeslliu@nuaa.edu.cn。
更新日期/Last Update: 2012-12-29