一种级进模两步冲裁法 ,由半冲裁和推离两个工步组成。在半冲裁工步中使工件与废料分而不离 ,然后由凹模底部的弹性件将材料预起 ,再推至推离工步 ,并由推料杆将工件和废料分离。为了确保凹模强度 ,同时实现定距送料 ,还可在两工步中间增加一个与冲裁件尺寸相对应的凹槽空位。 A progressive die two-step blanking method, the blanking and pushing away from the two steps. In the half-blanking step, the workpiece is separated from the scrap without separation, then the material is pre-thrown by the elastic part at the bottom of the die and pushed to the pushing-away step, and the workpiece is separated from the scrap by the pushing rod. In order to ensure the strength of the die, while achieving distance feeding, but also in the middle of the two steps to increase the size of a blanking recess corresponding to the recess.