Analysis of Behavior on 2 kinds of Particles in Planetary Barrel : Distribution of 2 kinds of Particles in Various Conditions

The investigation of the cause of the segregation that arises during barrel finishing is desired, because the workpiece is not mixed with abrasives. Fundamentally, the motion of the workpiece and abrasives is equal to the motion of the discontinuous objects in the rotary barrel. Therefore, if the motion of the particles in the rotary barrel and characteristics of the segregation are known in various conditions, that knowledge can be used in order to investigate the cause of the segregation and the optimum machining condition. In this study, the bahavior of the particles in the planetary barrel which rotate about its horizontal axis and revolve around its vertical axis was examined through experiment and analysis using DEM (Discrete Element Method). As a result, it was demonstrated that the segregation was not generated by the relationship between length and inside diameter of the rotary barrel.