本文通过对行星球磨过程的分析，研究了行星球磨过程中的磨球碰撞行为，建立了球磨工艺参数（球料比、球磨转速、磨球半径）与磨球运动速度、平均自由程及碰撞频率的理论关系，结来表明：随球磨转速提高，磨球运动速度和碰撞频率将增大；装料量一定时，提高球料比，磨球运动速率和平均自由程都将减小，碰撞频率增大，装料量和球料比一定时，磨球半径愈小，磨球运动的平均自由程减小，碰撞频率增大。
By analysing the kinetics of planetary ball milling, the impact behavior of milling ball is investigated, theoretical relationships between the technical parameters of ball milling (RBP= ball to powder ratio,Ω: angular velocity of milling and rb: radius of ball) and the velocity (vb), average free path (S) and impact frequency (f) of milling ball are established in this paper, It shows that vb and f increase with increasing angular velocity of milling; keeping the mass of powders invariable,f increases with increasing RBP, however, vb and S decrease;when mP and RBP are constant, S decreases and f increases with decreasing rb.
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