我厂生产的一种长螺栓如图1所示。制造该螺栓的模具应解决好零件的装模和出模问题,为此我们设计了如图2所示的螺栓镦头模。 件4、5、6是形成型腔的零件,件7是支承凹模的活动模座。 工作过程如下:冲床滑块抬起后,用手柄12将凹模座7逆时针旋转90°拉出,使四模 I produced a long bolt shown in Figure 1. The manufacture of the mold of the bolt should solve the problem of part assembly and ejection, and for this reason we designed the bolt upsetting die as shown in Fig.2. Parts 4, 5 and 6 are parts forming a cavity, and parts 7 are movable dies supporting a female die. The working process is as follows: After the punch slider is raised, the die holder 7 is rotated 90 ° counterclockwise by the handle 12 to pull out the four-mode