摘要
航空发动机叶片型面数据的快速精确获取是提高叶片加工质量、保证整机工作性能和使用寿命的关键环节。为实现叶片等空间复杂曲面零件的几何形状和尺寸信息的高精、高效测量,基于非接触式的光学扫描测量系统,开展了其在叶片截面参数检测中的应用研究。该光学扫描测量系统以传统的三坐标测量机为系统平台,配备基于环形激光三角法测量原理的新型激光扫描测头,结合专用的叶片测量软件,实现叶身指定截面的几何参数测量与评价,因而可以作为一个技术领先的用于快速精确测量叶片和质量控制的解决方案。为验证该光学扫描测量系统在叶片型面扫描测量中的应用效果,以一个大扭曲风扇叶片作为被测对象,对其5个截面进行扫描测量,通过模型匹配获得了该叶片的每个截面上的轮廓度误差、形心位置度误差和弦线转角误差等,充分体现出了该测量系统的有效性和实用性。
Aero-engine blades have a great influence on the overall performance of the engine.Therefore,inspection of the blade surfaces in a rapid and accurate manner has become a key segment to improve the manufacturing quality of blades,as well as the performance and lifetime of the engine.In order to measure the geometrical shapes and dimensions of those workpieces with complex surfaces such as blades in a way of high accuracy and efficiency,the study on application of an optical scanning system in measuring of section parameters of a blade is carried on in the paper.Taking the traditional coordinate measuring machine(CMM)as the system platform,the optical scanning system is equipped with a new laser scanning probe,which is based on the measuring principle of circumferention triangulation.Also,combining with the special data processing software,the system can be used to inspect and evaluate the geometrical parameters of the specified sections of a blade,which could serve as an advanced solution for the shape inspection and quality control of blades.For verifying the application effect of the optical scanning system in the measurement of blade surfaces,a twisted fan blade is selected as the target.In the measuring procedure,5 sections of the blade are scanned and measured by the system.After the model matching,the errors of profile,centroid position and chord angle on every section are derived,which fully manifests the effectiveness and practicality of the measuring system.
作者
毕超
王津
李迪
房建国
BI Chao;WANG Jin;LI Di;FANG Jianguo(Aviation Key Laboratory of Science and Technology on Precision Manufacturing Technology,Beijing Precision Engineering Institute for Aircraft Industry,Beijing 100076,China)
出处
《航空制造技术》
2018年第15期91-95,102,共6页
Aeronautical Manufacturing Technology
基金
国家科技重大专项(2013ZX04011–031)
关键词
非接触
叶片型面
光学测头
三坐标测量机
扫描
Non-contact
Blade surface
Optical sensor
CMM(coordinate measuring machine)
Scanning
