The research on the new ultra-precision polishing instrument of the internal surface in the elbow

Ultra smooth surface polishing techniques are the important part in the ultra precision machining system. The new ultra-precision polishing instrument which fit for the precision polishing in the elbow´s internal surface has been researched in this paper. The polishing instrument is a sphere which performs rotating-jet polishing and flexibly dragged by the string. The simulation analysis of the polishing instrument in the internal of the elbow has been simulated with the ANSYS11.0 finite element analysis software. The simulation result has proved that the polishing instrument can polish the internal surface of the elbow and achieve the purpose of the improving roughness of the internal surface in the elbow.