航空发动机叶片焊接轨迹规划研究  

Research on Welding Trajectory Planning of Aero Engine Blade

作　　者：宋涛[1] 赵萌[2] 戴士杰[1,3] 王志平 SONG Tao;ZHAO Meng;DAI Shi-jie;WANG Zhi-ping(Institute of Robotics and Automation,Hebei University of Technology,Tianjin 300132,China;Tianjin Aviation Mechanical and Electrical Co.,Ltd.,Tianjin 300308,China;Key Laboratory of Civil Aircraft Maintenance and Repair,Tianjin,Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]河北工业大学机器人及其自动化研究所,天津300132 [2]天津航空机电有限公司,天津300308 [3]中国民航大学天津市民用航空器适航与维修重点实验室,天津300300

出　　处：《机械设计与制造》2018年第9期182-184,188,共4页Machinery Design & Manufacture

基　　金：国家自然基金委员会与中国民用航空局联合资助(U1433117);中国民航科技重大专项(MHRD20130104);中国民航大学天津市民用航空器适航与维修重点实验室开放基金

摘　　要：合理的轨迹规划方法可以提高航空发动机压气机叶片焊接的质量、速度和效率。针对损伤后压气机叶片结构复杂、焊接困难以及焊接精度高等问题,提出了一种基于B样条等弧长分割曲线的中线的焊接方法,并按照截面曲率对轨迹调整。通过计算机对所得的一系列坐标点进行逼近运算,最终得到航空发动机叶片的焊接路径。通过对得到的焊接路径进行误差分析,保证生成的焊接路径的精度。比较理论焊接路径与实际焊接路径,误差曲线显示出构建的实际焊接路径曲线最大误差不超过0.02mm,完全满足焊接路径工艺要求。Reasonable method of trajectory planning can improve the quality,speed and efficiency of the welding of aero-engine compressor blades.For the compressor blade structural damage after welding is complex,difficult and high precision of welding,we present a welding method of B-Spline curve arc length segmentation based on centerline extraction,and we adjust the track according to the curvature of the section.Through the software of a series of coordinate points to approximate the operation,and finally get the aircraft engine blade welding path.We can make the error analysis of the welding path to ensure the accuracy of the welding path generated.Compared with the actual welding path,the error curve shows that the maximum error of the construction of the actual welding path curve is not more than 0.02mm.

关 键 词：轨迹规划 航空发动机叶片 中线提取 B样条 

分 类 号：TH16[机械工程—机械制造及自动化] TP23[自动化与计算机技术—检测技术与自动化装置]