航空发动机立柱式柔性装配工装定位误差分析

Error analysis of column flexible assembly tooling positioning of aero-engine

为提高航空发动机转子类部件在数字化装配过程中的定位精度,采用具有3个平动自由度立柱式三坐标定位单元对航空发动机转子类部件进行数字化装配。对引起数字化装配工装定位误差因素进行综合分析,建立单元定位误差模型,在已建立的误差模型基础上利用MATLAB软件进行计算与仿真分析。结果表明,利用此方法可以找到航空发动机转子柔性装配最佳基准位置,从而提高转子类部件在装配过程中的定位精度。

A method of posture alignment based on a three-axis column locating unit was developed to improve the positioning accuracy in aero-engine digital assembly system. The positioning error model of locating unit was constructed through analysis of the factors affecting positioning accuracy. Then the comprehensive positioning error was calculated and the simulation analysis was conducted with MATLAB software.Simulation results showthat the best reference position could be found and the accuracy of the locating units could be improved in the assembly process.