航空发动机损伤叶片再制造修复方法与实现

发布时间：2018-09-05 07:22

【摘要】：航空发动机叶片长期工作在高温、高压和高速的环境下,极易出现损伤。但是,损伤叶片的再制造修复技术一直被国外垄断,国内航空公司不得不花费大量的资金和时间将受损叶片送往国外维修。针对此问题,提出一种航空发动机损伤叶片再制造修复方法。首先,对损伤叶片进行失效特征分析,评价修复可行性;其次,获取并处理叶片点云数据,提取叶片截面的边界曲线,重建叶片数字化模型,通过布尔运算得到加工目标模型;再次,采用激光熔覆和自适应加工方法,对损伤叶片进行再制造修复;最后,分别对叶片三维数字化模型与实物进行精度检测和误差分析。结果表明,利用该方法建立的叶片数字化模型具有较好的精度和光顺性,再制造修复误差满足发动机维修手册的要求。
[Abstract]:Aeroengine blades are prone to damage under high temperature, high pressure and high speed for a long time. However, the remanufacturing repair technology of damaged blades has been monopolized by foreign countries, and domestic airlines have to spend a lot of money and time to send the damaged blades abroad for repair. In order to solve this problem, a remanufacturing repair method for aeroengine damaged blade is proposed. Firstly, the failure characteristics of damaged blades are analyzed to evaluate the feasibility of restoration. Secondly, the point cloud data are obtained and processed, the boundary curves of blade sections are extracted, the digital model of blades is reconstructed, and the processing target model is obtained by Boolean operation. Thirdly, laser cladding and adaptive machining are used to repair the damaged blade. Finally, the accuracy and error analysis of the 3D digital model and the real object of the blade are carried out respectively. The results show that the digital model of blade established by this method has good accuracy and smoothness, and the error of remanufacturing repair meets the requirements of engine maintenance manual.
【作者单位】：中国民航大学工程技术训练中心;中国民航大学地面特种设备科研基地;中国民航大学航空自动化学院;
【基金】：国家自然科学基金(U1333121) 天津市应用基础与前沿技术研究计划(14JCQNJC05000) 工信部重大专项(2013ZX04001071) 中央高校基本科研业务费专项资金(3122014D12)~~
【分类号】：V263.6

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