The result shows that the changing velocity of the errors has influence on the machining accuracy of the gear and the choosing of the compensating methods.
结果表明，滚刀与工件间的相对偏差变化速度的快慢不仅影响到齿轮加工精度，还影响到误差补偿方法的选取。
2
This article will discuss the design of compensating groove in external gear pump by analyzing the gearing characteristics.