空心涡轮叶片近净形过程变形分析与控制  

Analyzing and Controlling Deformation of Hollow Turbine Blade in Near Net-shape Process

作　　者：李世峰[1] 卜昆[1] 董一巍[1] 张定华[1] 杜随更[1] 

机构地区：[1]现代设计与集成制造技术教育部重点实验室(西北工业大学),陕西省西安市710072

出　　处：《中国电机工程学报》2011年第14期109-112,共4页Proceedings of the CSEE

基　　金：航空科学基金(2008ZE53042)~~

摘　　要：针对高精度复杂空心涡轮叶片成形精度难控制问题,基于光学测量型面的数据偏差分析技术,开展涡轮叶片实测数据的处理与配准及凝固收缩多因素耦合变形等关键技术研究。并在此基础上,综合考虑叶片体积收缩补偿和弯扭复合变形补偿等因素,建立空心涡轮叶片近净形过程位移场,完成空心涡轮叶片精铸模具型腔的逆向修复设计。研究结果表明:该方法能够有效地控制叶片尺寸精度与尺寸稳定性,提高了模具型腔精度及可靠性,具有极为重要的理论意义和工程实用价值。According to the low-shape accuracy of hollow turbine blade, the key techniques for treating measurement data, aligning blade model and coupling deformation were studied in detail, which was based on the deviational analysis by using optical scanning. Meanwhile, considering the compensational factors of volume shrinkage and bending-torsion deformation, the displacement field was established in near net-shape process. Then, the mold cavity was implemented by reverse renewal design process. Research results show that the blade dimensional accuracy and dimensional stability can effectively control, and the accuracy and reliability of mold cavity are also improved. So it is of very important theoretical meanings and engineering practical values.

关 键 词：空心涡轮叶片 成形精度 体积收缩 弯扭复合变形 模具型腔修复 

分 类 号：V261[航空宇航科学与技术—航空宇航制造工程]