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差动分度法是铣工常用的一种分度方法,它适用于单式分度法无法解决的等分数,如63、79、119、127等。这种分度法的特点是:通过挂轮把分度头主轴(后端)和挂轮轴联系起来,并松开分度盘的紧固螺钉(附图),以使分度时分度盘随着分度手柄以相同或相反方向补偿一个角度,获得所需等分数的转角。因此,必须根据工件的实际等分数与分度时的假定等分数计算一组挂轮。由图可知:差动分
Differential indexing is a commonly used method of milling indexing method, which is suitable for single fractional method can not be resolved, such as the average fraction, such as 63,79,119,127 and so on. This indexing method is characterized by: the indexing head spindle (rear end) and hanging wheel shaft linked, and release the index plate fastening screws (with photos), so that the indexing sub-dial with With the indexing handle, compensate for an angle in the same or opposite direction to obtain the desired angle of equilibration. Therefore, it is necessary to calculate a set of pinnacle according to the actual equal parts of the work piece and the assumed equal points at the time of indexing. The figure shows: differential points