Influence of Various Conditions on Quality of Burnished Surface in Developed Roller Burnishing with Active Rotary Tool

Burnishing characteristics of a newly developed roller burnishing method were developed. The developed method can effectively control the sliding direction between the roller and a cylindrical workpiece by inclining the roller axis with respect to the workpiece axis. The outer surface of a round aluminum alloy bar was targeted. The influence of burnishing conditions on burnished-surface quality was investigated, and surface quality was evaluated based primarily on the surface roughness, surface profile, and external appearance. As observed, the burnished-surface quality was strongly influenced by the pressing force, roller-inclination angle, and number of tool passes. A superior surface quality could be realized by increasing the number of tool passes.