压气机叶片加工误差离散性控制研究进展综述

A Review of Research Progress on Discreteness Control of Compressor Blade Machining Error

航空发动机压气机整体叶盘通常设计为旋转周期对称结构。然而,实际加工中同一级整体叶盘上不同叶片之间以及单个叶片自身存在的加工误差离散性会对流场参数产生不利影响。因此,提高整体叶盘叶片加工误差一致性成为普遍关注的难题。综述了近年来针对同级叶盘不同叶片加工误差离散性对气动性能影响规律的相关研究,以及加工过程强时变特性下误差离散度控制的相关成果。就误差离散性现象及产生原因、对性能影响规律及加工误差离散度控制方法这3个方面展开论述。最后展望了未来误差离散度加工控制方法发展趋势,为未来相关研究工作提供参考。

The aero-engine compressor blisk is usually designed as a rotationally symmetric structure.However,in actual machining,the discreteness of machining errors between different blades on the same stage blisk and the individual blade itself will adversely affect the flow field parameters.Therefore,improving the consistency of machining errors of blisk′s blades has become a common concern.This paper reviews the related researches on the influence of machining error dispersion on aerodynamic performance of different blades of the same stage in recent years,and the related results of error dispersion control under strong time-varying characteristics of machining process.The error dispersion phenomenon and its causes,the influence law on performance and the control method of machining error dispersion are discussed in three aspects.Finally,the development trend of error dispersion machining control method in the future is prospected,which provides a reference for future related research work.