航空发动机第5级静子叶片榫头加工工艺优化

The Machining Technology Optimization of Tenon on Level Five Aeroengine Stator Blade

为提高航空发动机第5级静子叶片的加工质量,结合传统静子叶片榫头加工方法,优化榫头加工工艺并进行金属切削实验,获得X,Y,Z三个方向力的数据;基于回归分析原理,求解精加工刀具承受的最大切削力和表面粗糙度的经验公式,采用多目标优化方法得到最优切削参数,并利用Vericut软件对程序进行刀路、过切、碰撞检查,得到合理高效的加工方案.结果表明,采用改进后的榫头夹具和优化后的切削参数,叶片的加工效率明显提高并有效降低了刀具的磨损速度,使叶片榫头的加工时间从45 min缩短到30 min.

In order to improve the machining quality of the aeroengine＇s level five stator blade, the research optimized the existing machining technology combining with the traditional machining method for stator blade tenon, and carried out the metal cutting experiment, got the three force data of X, Y, Z directions. Based on the regression analysis theory, to solve the bearable maximal cutting force of the finishing tool and the experience formula of surface roughness, to get the optimal cutting parameters by used multi-objective optimization methods, and to check the tool path, overcut, collision of the program using VERICUT, the reasonable and efficient machining scheme was gained. The experimental results showed that the machining efficiency of the blade was significantly improved, the tool wear rate was effectively reduced, and the blade tenon machining operations time was shortened from the previous 45 minutes to 30 minutes now, adoption the improved tenon fixture and the optimized cutting parameters.