在铣削加工中,有些工件需要分度加工的部份虽不长,但工件的本身却很长(如汽车上的半轴等),如果用普通分度头装夹,即使采用大号铣床加工,工作台也不够长。为适应加工需要,我们自行设计制造了一个空心分度头(图1)。这样,便可使工件从分度头主轴的空心孔内穿过,采用一端夹紧和一端顶的方法加工 In the milling process, some parts need indexing process is not long, but the workpiece itself is very long (such as semi-axle on the car, etc.), if the ordinary indexing head clamping, even if the use of large milling machine Workbench is not long enough. In order to meet the processing needs, we designed and manufactured a hollow indexing head (Figure 1). In this way, the workpiece can be passed through the hollow bore of the indexing spindle and machined with one end clamping and one end