斜刃冲裁与平刃冲裁的关系及斜刃冲裁力的计算  

Relationship between blanking process with inclined blade and conventional process with planar blades and calculation of blanking force

作　　者：秦泗吉[1] 

机构地区：[1]燕山大学

出　　处：《锻压机械》2002年第4期27-28,共2页Metalforming Machinery

摘　　要：摘要通过比较平刃冲裁与斜刃冲裁的特点,介绍了斜刃冲裁最大冲裁力的计算公式及其在不同刃口高度与板厚关系时的应用。The relationship between shearing force and stroke for blanking process with inclined blade is derived based on the curve of blanking force versus stroke with pla-nar blade.Two kinds of shearing processes by inclined blade are analyzed according to the working height of the blade bigger or smaller than the blank thickness.It is validated that the blanking force with inclined blade is equal to the whole work done in the conventional process with planar blades divided by the length of shearing line as the height of the working blade is greater than the blank thickness.The blanking force by inclined blade is independent of the length of blanking line under this condition.Further,it is indicated that the length of shearing line must be considered in analy-sis and the blanking force must be calculated by new method in blanking process with inclined blade.

关 键 词：斜刃冲裁 平刃冲裁 冲裁力 

分 类 号：TG386.2[金属学及工艺—金属压力加工]