Polishing tool applied in inner surface of bend

Because ultra-precision machining in inner surface of bend is very difficult to machine, it becomes the bottleneck of ultra-precision processing technology and is highly concerned by the domestic and foreign scholars. In order to solve the problems of ultra-precision machining in inner surface of bend, we need to find an effective method to achieve ultra-precision polishing, and reduce the inner surface roughness. Based on polishing mechanism of fluid rotating and impacting, we researched the polishing tool that suits finishing treatment in inner surface of bend. We carried out the principle experiments of ultra-precision polishing, which validated the polishing tool to be able to achieve ultra-precision polishing and reduce surface roughness in inner surface of bend.