空心涡轮叶片精铸蜡型陶芯定位元件尺寸计算方法  

Size Calculation Method of Ceramic Core Locators for Hollow Turbine Blade Investment Casting Wax Patterns

作　　者：冯炜[1] 汪文虎[1] 王孝忠[1] 骆金虎 

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

出　　处：《航空学报》2013年第1期181-186,共6页Acta Aeronautica et Astronautica Sinica

基　　金：国家科技支撑计划(2006BAF04B02);国家"863"计划(2006AA04Z144)~~

摘　　要：针对空心涡轮叶片精铸蜡型陶芯定位元件尺寸难以精确量化的问题,提出了基于模型匹配算法的陶芯定位元件尺寸计算方法。通过将壁厚权值因子引入匹配模型,实现了测量数据与理论模型的精确匹配;基于匹配后的陶芯实测数据,建立了定位元件的尺寸计算方法;最后,将壁厚偏差分布一致的一批陶芯分两组进行实验对比。结果表明该方法计算出的陶芯定位元件尺寸能够有效提高蜡型壁厚精度,对空心涡轮叶片的精确控型有一定的指导意义。This paper proposes a method for size calculation of ceramic core locators based on model matching to cope with the difficulty to precisely quantify the sizes of ceramic core locators for hollow turbine blade investment casting wax patterns.By introducing the wall thickness weighting factors into the matching model,accurate matching between the measurement results and theoretical model is realized.Based on the measured data of matched ceramic cores,a method for size calculation of ceramic core locators is developed.Finally,a batch of ceramic cores with consistent thickness deviation is divided into two groups for use in a contrast experiment.The results show that the proposed method can effectively improve wax pattern wall thickness accuracy.Therefore it provides some guidance for controlling the accuracy of hollow turbine blade.

关 键 词：空心涡轮叶片 蜡型 陶芯 定位元件 模型匹配 权值因子 实测数据 

分 类 号：V263.1[航空宇航科学与技术—航空宇航制造工程]