冲压生产中,一般孔的翻边,被冲零件为平板(平面),通过模具翻出竖立的孔边(图1a)。该工艺广泛用来代替先拉深,再切底的工序(图1、b),用冲压翻边尤为有效。但在图2管接头型零件上采用冲压翻边的工艺,应用还很少。我厂在生产常州“金狮”自行车中接头时,作了试验,己获成功。中接头采用聚氨酯橡胶凸形新工艺后,四支管壁高度尺寸及几何形状、尺寸精度尚达不到图纸要求,最后用翻边工艺来满 Stamping production, the general hole flanging, was blanked parts for the flat (plane), erected through the mold erected edge of the hole (Figure 1a). The process is widely used to replace the first drawing, then cut the end of the process (Figure 1, b), with stamping flange particularly effective. However, in Figure 2 pipe fittings with stamping flanging on the process, the application is still small. I plant in Changzhou, “Golden Lion” bicycle joints, made a test, has been successful. In the joint with polyurethane rubber convex new technology, the four pipe wall height and geometry, size precision still can not meet the requirements of the drawings, and finally with the flange to full