Abstract:In order to obtain the uniform polishing surface,the polishing experiments of anodic oxide film of aluminum alloy were conducted by the cluster magnetorheological finishing (MRF) technology to research the influence of main polishing parameters on the surface roughness and material removal rate,including the machining gap,the revolving speed of the workpieces and the polishing plate,the oscillation distance of the workpiece,and the machining time.The results show that with the increasing of the machining gap,the surface roughness of the workpiece is decreased firstly and then increased,while the material removal rate is decreased rapidly.With the increasing of the revolving speed or the oscillation distance of the workpieces,the surface roughness is first decreased rapidly and then increased slowly,while the material removal rate is increased at first and then decreased.Both the surface roughness and material removal rate are decreased at first and then increased with the increasing of the revolving speed of the polishing plate.With the extension of the machining time,the surface roughness of anodic oxide aluminum alloy is decreased rapidly and then tends to be stable.The surface roughness of the polished workpieces is decreased from 3329 nm to 52 nm and a mirror surface of anodic oxide film of aluminum alloy is obtained with the machining gap of 11 mm,the revolving speed of the workpieces of 350 r/min,the revolving speed of the polishing plate of 60 r/min,the oscillation distance of 10mm and the machining time of 10 min under the experiment conditions in this paper.