基于内高压成形方法的航空发动机空心叶片工艺设计  

Process Design of Aero Engine Hollow Blade Based on Hydroforming

作　　者：周子钊 李新军[1] 周应科[1] 万敏[1] 

机构地区：[1]北京航空航天大学机械工程及自动化学院,北京100191

出　　处：《精密成形工程》2015年第3期67-72,共6页Journal of Netshape Forming Engineering

摘　　要：目的成形精度更高、质量更好的航空发动机钣金空心叶片。方法对空心叶片的结构进行分析,设计出了一种带有刚性凸模的内高压成形方法。根据塑性变形理论分析了零件的受力状况,根据所制定的工艺路线建立了有限元模型,对成形过程中的不同的管坯直径、内压大小、刚性凸模尺寸等工艺参数进行了仿真。结果得到了成形空心叶片的最优的工艺路线和工艺参数,有效抑制了零件的过度减薄和回弹等现象。结论通过此带有刚性凸模的内高压成形方法,可以很好地实现该零件的虚拟成形。To form the aero-engine hollow blade with higher accuracy and better quality,a method of hydroforming with rigid convex mold was designed through the analysis of the structure of the hollow blade. The stress state of the part was analyzed based on the plastic deformation theory. The finite element models were built according to the process method developed. The different values of process parameters during the forming process including the diameter of the tube,the internal pressure and the size of the rigid convex mold,were used in the finite element simulation. The optimal route and parameters of the forming process for hallow blade were obtained. The excessive thinning and springback of the hollow blade were effectively controlled. The virtual forming of the blade was well achieved through the method of hydroforming with rigid convex mold.

关 键 词：内高压成形 空心叶片 有限元仿真 工艺路线 

分 类 号：TG394[金属学及工艺—金属压力加工]