塞座是出口标准电池中的关键元件之一,材料是聚四氟乙烯塑料,外径为 M16×2的螺纹,内孔呈六角形,工件最小壁厚仅0.5毫米(见图1)。如用普通摸具冲孔时,凸模的尺寸还需加上弹性恢复量,料厚在1～3毫米时,孔径弹性恢复量为(20～25%)t,这样使工件壁部更薄,冲裁时螺纹 The plug seat is one of the key components in the standard battery for export. The material is Teflon plastic. The outer diameter is M16 × 2. The inner hole is hexagonal. The minimum wall thickness of the work piece is only 0.5 mm (see Figure 1). Such as the use of ordinary touch when the punch, the punch size also need to add elastic recovery, the material thickness of 1 to 3 mm, the elastic recovery of the aperture (20 ~ 25%) t, so that the workpiece wall thinner , Blanking when the thread