基于线激光扫描的叶片三维型面重构方法  

Reconstruction method of blade 3D profile based on line-laser scanning

作　　者：董洁 王宗平 欧登荧 陈龙庆[4] 谢罗峰 殷国富[2] DONG Jie;WANG Zong-Ping;OUDeng-Ying;CHEN Long-Qing;XIE Luo-Feng;YIN Guo-Fu(Chengdu Aeronautic Polytechnic,Chengdu 610100,China;School of Mechanical Engineering,Sichuan University,Chengdu 610065,China;School of Aeronautics and Astronautics,Sichuan University,Chengdu 610065,China;Key Laboratory of Radiation Physics and Technology of the Ministry of Education,Institute of Nuclear Science and Technology,Sichuan University,Chengdu 610065,China)

机构地区：[1]成都航空职业技术学院,成都610100 [2]四川大学机械工程学院,成都610065 [3]四川大学空天科学与工程学院,成都610065 [4]四川大学原子核科学技术研究所辐射物理及技术教育部重点实验室,成都610065

出　　处：《四川大学学报（自然科学版）》2023年第3期104-111,共8页Journal of Sichuan University(Natural Science Edition)

基　　金：四川省科技厅项目(2022YFG0358,2021YFG0049);四川省科技计划(2022ZDZX0034);德阳市科技计划(2021JBJZ001);中央高校基金业务费(2021SCU12146)。

摘　　要：叶片作为航空发动机的核心部件,对整机的安全性和可靠性起着关键性作用.一直以来叶片型面的尺寸、形状精度在加工和检测过程中均有着严格要求.为此,本文提出一种基于线激光扫描的叶片三维型面重构方法.首先,基于研制的叶片四轴检测装置,结合线性编码器与线激光传感器实现了叶片型面的快速扫描与数据采集.然后,提出基于叶片基准面几何特征的多视场扫描数据拼接方法,完成了叶片型面的高精度重构.最后,以典型叶片为实验对象进行型面重构实验,并将重构数据与三坐标测量结果进行对比.结果表明叶片截面轮廓的平均偏差在0.040 mm以内,标准差小于0.028 mm.验证了提出的叶片型面重构方法的精确性与可行性.As the core component of aero-engine,the blade plays a key role in its safety and reliability.The dimension and shape accuracy of the blade profile have always been strictly required in the process of blade machining and measuring.Thus,in this paper we propose a method for reconstructing the three-dimensional profile based on line-laser scanning.First,based on the developed four-axis blade measurement device,the rapid scanning and data acquisition of the blade profile are realized by combining the linear encoder and the line laser sensor.Then,a registration method based on the geometric features of the blade datum plane is further proposed to align the multi-view scanning data of blade profile,and the high precision reconstruction of the blade profile are achieved accordingly.Finally,a typical blade is taken as the experimental object for profile reconstruction experiment,and the profile reconstruction data is compared with the CMM measurement results from the same blade.The results show that the average deviation of cross-sections in blade profile is less than 0.040 mm and the standard deviation is less than 0.028mm.This demonstrates the accuracy and feasibility of the proposed method.

关 键 词：线激光 叶片型面 三维重构 多视场数据拼接 

分 类 号：TN249[电子电信—物理电子学] V263[航空宇航科学与技术—航空宇航制造工程]