冲裁间隙选择得正确与否直接影响到冲件质量和模具寿命,因此,如何正确选择间隙已成为模具行业中冲裁模设计的关键。建国以来我国一直延用的苏联间隙值,存在模具制造困难、寿命低等问題,尤其近年来采用线切割工艺,按同间隙切割直刃口模具,常因塞料将凹模涨裂报废,而斜刃口模 Blanking gap is selected correctly or not directly affect the quality of die and die life, therefore, how to correctly select the gap die industry has become the key to die design. Since the founding of our country has been extended by the Soviet Union gap value, there is mold manufacturing difficulties, low life expectancy, etc., especially in recent years using wire cutting process, according to the same cutting straight edge die, often due to plug the die will rise and fall scrapped, and Oblique edge die