带式输送机托辊数量较多，托辊管加工任务很重。过去是采用调头分别加工，效率低，同心度不易保证。也有采用双头键削，两端孔虽可保证同心度，但因工件夹紧定位精度差，孔与管外径同心度难保证，并且效率不高，不能满足要求，故研制本机床。其传动系统加附图所示。主轴装置采 Belt conveyor roller number more, roller tube processing tasks are heavy. The past is the use of U-turn processing, low efficiency, concentricity is not easy to guarantee. There are also double-headed key cut, although the two ends of the hole to ensure concentricity, but poor positioning accuracy of the workpiece clamping, hole and tube diameter concentricity is difficult to guarantee and not efficient, can not meet the requirements, so the development of the machine. The transmission system plus the figure shown. Spindle device mining