目前,使用较多的电动卡盘是由渐开线两齿差与八孔针销输出机构组成的。它能满足减速比大,体积小的要求,其缺点是制造比较困难,尤其是输入轴上的双偏心套和行星轮上的八个孔精度要求较高,如果制造达不到精度要求,针销轴受力就不均匀,在使用中针销轴就可能被别断。这种卡盘不适 At present, the use of more electric chuck is involute two teeth and eight holes pin pin output mechanism. It can meet the requirements of large reduction ratio and small volume. The disadvantage is that it is difficult to manufacture, especially the precision of eight holes in the double eccentric sleeve and the planetary gear on the input shaft is high. If the manufacturing can not meet the requirement of accuracy, Pin shaft force is uneven, in use pin axis may be cut off. This kind of chuck is not suitable