我厂在生产大尺寸工件40B—自动倾卸车挡泥板 (见图1) 的过程中,采用改变冲压着力点的办法和冷铁合模浇铸解决了冲压设备小和模具无法加工的困难,并用粘结法解决了四个凸台相应位置的准确性 I plant in the production of large-size workpiece 40B-automatic dump truck fender (see Figure 1) in the process, the use of changes in the stamping point of approach and cold-iron die-casting to solve the small stamping equipment and die can not be processed difficult, and use The bonding method solves the accuracy of the corresponding position of the four bosses