In the net-near forming process of aero-engine compressor blade

the leading and trailing edges which have sharply changing curvature and cannot be directly formed need to be processed using NC machining. However

blade will be deformed in the early stage of the process

and the theoretical digital model can no longer be applied to the secondary processing. Therefore

in order to solve the problem of edges machining caused by blade deformation and realize the smooth transfer between blade edge and body

this manuscript presents an adaptive machining method for blade leading and trailing edges based on tool path adjustment. Firstly

the characteristic measurement points are extracted from the formed area near blade edges. And then

the deformation condition of blade in the early process is analyzed by the measurement data. Moreover

the mapping function between the Z coordinate value of the blade section and the deformation law is established according to deformation condition. Finally

the original nominal tool paths are adjusted according to the deformation mapping function and to realize the adaptive machining of blade edges using adjusted tool path. Taking the precision forging blade of a certain aero-engine as an example

the simulation results show that the optimization effect of proposed method is significant. Compared with the machining error using theoretical tool path

the adjusted tool path greatly reduces the machining error. The proposed method can effectively solve the problem of smooth transfer machining between blade edge and body of precision forging blades.