Test study on the correlation between vibration polishing process parameters and surface morphology

LI Guihua; ZHAO Zemin; WU Hao; TANG Jinyuan; LI Xin; HOU Yihui

doi:10.16578/j.issn.1004.2539.2025.02.016

Abstract：[Objective]Vibration finishing,as a precision machining technology,has been widely applied in the high-preci-sion gear manufacturing required for automotive transmissions,industrial reducers,precision instruments,and other fields.Vibra-tion finishing can reduce surface roughness and improve the surface integrity of fundamental components.To explore the correla-tion between vibration finishing process parameters and surface roughness,tests were conducted on cylindrical rollers made of gear steel in this study.[Methods]Vibration light decoration experiments were designed and conducted under various process pa-rameters to study the evolution of surface morphology during shot peening vibration light decoration processing.The influence of processing time,abrasive particle shape,abrasive particle size,and vibration frequency on morphology evolution was ex-plored.[Results]The results indicate that the rate of surface roughness reduction follows a trend of rapid decrease initially,fol-lowed by a slower rate,becoming stable once roughness decreases to a certain"threshold".The surface sharpness of abrasive grains decreases in the order of oblique triangular,oblique cylindrical,and spherical shapes,but the surface quality is better after processing with the flatter spherical abrasive grains.Without considering geometric constraints,the larger the abrasive grains size,the faster the roughness decreases.Additionally,the surface quality presents a"peaked"trend with an increase in vibration frequency,with optimal processing effects observed at vibration frequencies of 40 Hz and 50 Hz.