Aiming at the problems of severe tool wear and low polishing efficiency in polishing the root and hub area of blisk

a study was carried out based on the idea of subregional polishing from the aspects of tool selection

toolpath optimization

area overlapping and division. Based on the idea of subregional machining

the polishing tool and toolpath are optimized; An optimization model for the overlapping problem between subregions is established and analyzed. After that

the root and hub area is divided based on the method of subregional polishing. Experiments in engineering environment show that the tool wear is reduced by about 30% and the polishing efficiency is increased by about 30%

 which promotes the engineering application of automatic polishing technology in blisk.