用多工步拉伸板料毛坯的方式制造深锥零件,成形难度大,模具数量多,成品零件质量也较低,厚度变薄15～20%,零件表面不可避免会被模具的工作部分压伤而显得凹凸不平。尺寸及形状不稳定。此外,S_0/D×100≥4%的厚壁锥形零件时,根本不能采用普通深拉伸来获得,因为凸模与毛坯接触处产生的单位负载高,毛坯在开始拉伸之前就可能已经破裂.纵向挤压法是较先进的深锥零件成形法,该方法的实质是:把平面毛坯预先拉制成带底的圆柱杯形件(图1),车平端面,然后在锥形凹模上用能使压力经过杯形件端部传递到毛 Deep-cone parts are manufactured by multi-step stretching of blank blanks, which is difficult to form, with a large number of dies. The quality of the finished parts is also low and the thickness is reduced by 15-20%. The surface of the part is inevitably pressed by the working part of the die Wounded and looked uneven. Unstable size and shape. In addition, S_0 / D × 100 ≥ 4% of the thick-walled tapered parts, you can not use ordinary deep drawing to get, because the punch and the blank at the contact unit load generated high, the blank may have begun before stretching Longitudinal extrusion method is a more advanced deep cone part forming method, the essence of this method is: pre-drawing the plane blank into a bottomed cylindrical cup (Figure 1), the car flat end, and then in the tapered recess Mold can be used to pressure through the end of the cup is passed to the hair