Abstract: Briefly introduces current methods of gear finishing technologies and points out advantages and disadvantages of existing processes. A technology of gear barrel finishing has been proposed which elaborates processing mechanism of this technology and gives priority to complicated relative motion between the surface of the abrasive and the workpiece.A mathematical model has been established which derives formulation of calculating cutting speed and main factors that affect the processing effect are found theoretically.Analyzing the influence law of the factors by MATLAB.Using discrete element software EDEM,visually simulate abrasive particles in the system of the movement process and real-time observation of the movement of abrasive in the container.By comparing the abrasive particles on the tooth surface contact force under the different parameters,,laid the theoretical foundations for the experimental research and production application.

Key words: gears, finishing, cutting velocity, simulation