基于Geomagic Qualify的压气机叶轮叶型检验与偏差分析  

Blades Profile Inspection and Deviation Analysis of Gas Compressor Impeller based on Geomagic Qualify

作　　者：郑小伟 李杰 段牧染 王炤 申庆伟 李秀平 奥炫 ZHENG Xiaowei;LI Jie;DUAN Muran;WANG Zhao;SHEN Qingwei;LIXiuping;AO Xuan(Datong North Tianli Turbocharging Technology Co.,Ltd.,Datong037036,China)

机构地区：[1]大同北方天力增压技术有限公司,山西大同037036

出　　处：《新技术新工艺》2022年第5期54-58,共5页New Technology & New Process

摘　　要：增压器叶轮的叶片一般采用铸造或铣削加工成型,因叶型较复杂,为流线型三维空间曲面,所以传统检测方法很难实现精确检验。以铣削加工成型的叶片为例,提出应用Geomagic Qualify三维检测软件对叶轮叶型进行精确检测,并详细介绍了软件检测的原理和过程。检测的过程为通过三坐标测量机采集叶片上的点,得到点云模型,对点云模型进行去除杂点、去除干扰项等处理后与CAD模型进行比对,计算收敛之后,偏差分析可以从空间、平面等多角度呈现,从而全面、快速、准确地完成该复杂空间曲面的检验。所用方法不仅实现了空间曲面叶片的精确检测,而且对类似工件几何形状、位置偏差的检测具有一定的参考价值。The impeller blades of turbocharger were generally formed by casting or milling.Because the blade was a three-dimensional space curved surface that was complex,the traditional detection method was difficult to achieve accurate detection.Took the blade formed by milling for example,we raised and used Geomagic Qualify 3D inspection software to analyze the profile of impeller blades,and introduced the principle and process of the software detection in details.Firstly,the inspection process was to collect the point of the blade through coordinate measuring machine and obtained the point cloud model.After that,we took out the noise points for the point cloud model including disturbance term,then it was used to compare with CAD model.After the convergence,deviation analysis could be showed from space,plane and so on.So it could finish inspection of complex space curved surface over all,rapidly,and accurately.The method could not only realize accurate inspection of space curved surface,but also a reference value for inspection of the geometry and positional deviation of the similar parts.

关 键 词：叶片 叶型检测 Geomagic Qualify 点云 对齐原理 偏差分析 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]