叶片型面测量编程与误差处理技术

doi:10.3969/j.issn.1000-1158.2013.02.07

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摘要针对航空发动机叶片三坐标测量机(CMM)测量,进行了自动测量编程与误差处理两个方面的研究。提出了一种基于已知叶片CAD模型提取测量点理论坐标值与计算法向矢量的方法,矢量计算采用微平面法。数据处理时,采用ICP算法进行配准消除了系统误差,从而得到叶片型面误差。开发了测量点坐标值与矢量计算以及配准程序。实例证明该方法可靠、有效。

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	蔺小军
	李宜明
	李政辉
	高春

关键词 ：计量学, 叶片测量, CMM, 法向矢量, ICP算法, 配准, 误差处理

Abstract：To investigate the measurements of aero-engine blades using coordinate measuring machine(CMM), automatic measurement programming and error processing were studied. Based on CAD model of blade, a method to extract the theoretical coordinates of the measured point was proposed, and with micro-plane theory the normal vector was also calculated in this method. ICP algorithm was used to eliminate systematic errors during data processing, and then the surface error of blade was obtained. Finally the program to calculate the coordinate and vector of measured point, as well as the program for surface matching were developed. Practical example verified the validity and reliability of the proposed method.

Key words： Metrology Blade measurement CMM Normal vector ICP algorithm Surface matching Error processing

作者简介: 蔺小军(1968-),男,陕西宝鸡人,西北工业大学高级工程师,博士,主要从事精密几何量测量、CAD/CAM的研究。linxj@nwpu.edu.cn

引用本文:

蔺小军,李宜明,李政辉,高春. 叶片型面测量编程与误差处理技术[J]. 计量学报, 2013, 34(2): 128-133.
LIN Xiao-jun,LI Yi-ming,LI Zheng-hui,GAO Chun. The Blade Surface Measurement Programming and Error Processing Skill. Acta Metrologica Sinica, 2013, 34(2): 128-133.

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http://jlxb.china-csm.org:81/Jwk_jlxb/CN/10.3969/j.issn.1000-1158.2013.02.07 或 http://jlxb.china-csm.org:81/Jwk_jlxb/CN/Y2013/V34/I2/128