一、封闭断面的滚压零件该工件(图1)是用12对滚轮连续成形的。在出口处用可移式切断模切割,然后在第二工序进行冲孔而得。大型封闭断面工件的切断模存在下列问题: (1)只用外刃能否切断; (2)用(1)的方法不能切断时,即使装入心棒,由于切断断面的力比支持心棒所能承受的弯曲力矩大,故也不能切断。 (1)项的试验结果证明可以切断,但由于工件变形大,实际上不能使用。因此,一定要装入心棒。在这种情况下,心棒应是浮动的并能向切断方向自由移动。在切断 First, the closed cross-section of the rolling parts The workpiece (Figure 1) is the continuous formation of 12 pairs of rollers. Cut at the exit with a removable cutting die, and then punching in the second process derived. Large closed section of the workpiece cutting die the following problems: (1) can only cut with the outer edge; (2) (1) can not be cut off, even if the loading of the mandrel, the force due to cut the cross section than the mandrel can Bear bending moment, it can not be cut off. (1) test results show that you can cut off, but due to deformation of the workpiece, in fact, can not be used. Therefore, be sure to load the heart. In this case, the core should float and be free to move in the direction of the cutoff. Cut off