主轴箱是钻镗类组合机床的重要部分,它装配后精度的好坏,直接影响到组合机床的精度。 目前用于钻、扩、铰加工的多轴主轴箱较多,这类主轴箱在加工中,刀具有钻模板导向套引导,工件有专用夹具定位,孔的位置精度要求不高。因此,钻、扩、铰类主轴箱的精度与一般通用万能机床的主轴箱相比是最低的,结构也简单。 The spindle box is an important part of the drilling and boring machine. The accuracy of the assembly is directly affected the accuracy of the combined machine. At present, there are many multi-spindle headstocks used for drilling, expanding and reaming. In the machining of such headstocks, the guide of the tooling is guided by the guide plate of the drilling template. The workpiece has a special fixture for positioning, and the position accuracy of the holes is less demanding. Therefore, drilling, expansion, hinge type spindle box accuracy and general general purpose universal machine toolbox is the lowest, the structure is simple.