航空叶片加工过程在线检测方法研究  

Study on Online Inspection of Aeronautical Blade Processing

作　　者：王刚[1] 陈细涛 毛金城 李文龙 

机构地区：[1]华中科技大学机械科学与工程学院,湖北武汉430074

出　　处：《装备制造技术》2017年第9期1-6,共6页Equipment Manufacturing Technology

基　　金：国家973研究计划(2015CB057304);国家自然科学基金资助项目(51535004;91648111);武汉市应用基础研究计划(2017010201010139)

摘　　要：航空叶片零件是航空发动机的核心零部件之一,叶片为弯扭曲自由曲面结构、材料难加工、刚性差,加工精度难以保证,如何实现航空叶片的高效、高精度检测是制约在线检测技术应用的难点之一。根据航空叶片自由曲面特征,提出了基于曲率的叶片曲面测点自适应分布方法,通过构造双三次B样条曲面计算测点处叶片曲面的法向矢量,并基于曲面法矢对在线检测路径进行了优化,最终通过某型号航空叶片在线检测试验验证所提方法的可行性和有效性。Aeronautical blades are one of the core components of the aircraft engine. The machining accuracy of blades is difficult to guarantee,due to their high-bending free form surface,difficult-to-machine material and weak rigidity. How to realize the high efficiency and high accuracy inspection of aeronautical blades is one of the difficult points to restrict the application of online inspection technology. According to the free surface characteristics of blades,this paper purposed a curvature based adaptive distribution method of measure points on the blade surface. Calculate the normal vector of the blade surface at the measuring point through construct a double cubic B-spline surface. And optimize the inspection path based on the normal vectors. The test experiments demonstrate the feasibility and validity of the proposed method.

关 键 词：航空叶片 在线检测 曲率 B样条 

分 类 号：V232.4[航空宇航科学与技术—航空宇航推进理论与工程]