按常规工艺加工如图1零件形状,需用拉延、冲孔模具和大台面的冲压设备。我们采用先钻孔,后用简单模具冲坑的方法,不必用专用设备及模具,同样能加工出符合要求的零件。 首先按尺寸定好中心,考虑孔冲坑后的扩张量,选用比孔直径稍小的钻头钻孔,再用图2所示简单模 According to the conventional process as shown in Figure 1 part shape, the need to drawing, punching die and large table of the stamping equipment. We use the first hole drilling, after the method of using a simple pit red pit, do not have to use special equipment and molds, the same can be processed to meet the requirements of the parts. First of all, according to the size of a good center, consider the amount of expansion after hole Chong pit, use a bit smaller than the hole diameter drill, and then use the simple model shown in Figure 2