High efficiency automatic polishing of aero-engine blade is an important means to replace manual polishing and ensure the quality of finish machined profile. In this paper

blade measurement analysis and polishing experiment for leading/trailing edge are carried out on the array machining machine tool. Therefore

the array polishing path adjustment algorithm with the objective function of minimum polishing removal difference and the constraint condition of surface roughness is established

and the coordinate transformation function of NC system is used to realize the automatic adjustment of G-code. On the premise of ensuring the polishing accuracy and surface roughness

the purpose of high-efficiency multi-spindle synchronous polishing is achieved. Four typical blades are used for array polishing verification

their linear profile is no more than 0.032 mm and the surface roughness is R

a 

0.4 μm. The average polishing time of a single blade is 2.75 min.