To decrease or eliminate milled blades’ profile errors and to solve the problem in leading/trail edge polishing under presetting pressure control

a new polishing technology available to correct machining errors through presetting contact deformation for wheels was proposed in this paper. Firstly

to obtain the real distribution of machining margin on the surface of blades. Secondly

to determine the different material depth of each local position on the blade surface to be removed with polishing and to adjust the polishing paths and presetting the wheel deformation contacting with workpiece according the obtained depths distribution. Finally

to polish the engine blades with a conventional threeaxis machine tool to verify the capability of the proposed method. The polishing results show that the blades profile error distribution was changed from 0.02–0.12mm to –0.04– –0.005mm after polishing

which was successfully controlled within the designed tolerance. Comparing with the conventional polishing technology

the proposed method is of the ability to remove different quantity of material in depth with flexible diamond polishing wheel and to increase blade profile accuracy

which can be widely used to realize the low cost and high precision polishing of small and medium size aero-engine blades.