圆孔翻边在冷冲压模具工艺中有着比较重要的位置。由于生产应用较广,有关翻边的先进工艺介绍,多半以圆孔为实例进行细致的分析和研究,它有着独立的计算公式和工艺特性。而其它类型的翻边工艺,虽然是圆孔翻边的一种形式,应力状态及变形特点相似,但是在变形区内沿翻边线的应力分布不均匀,它随曲率半径的变化而变化。由于理论探讨较为困难,相应的公式也是一个近似值。这样给生产中设计与制作模具带来了一 Round hole flange in the cold stamping die process has a more important position. Due to the wide range of production applications, the introduction of advanced technology on the flange, most of the round hole as an example for detailed analysis and research, it has an independent calculation formula and process characteristics. While other types of flanging process, although it is a form of round flange, the stress state and deformation characteristics are similar, but the stress distribution along the flanging line in the deformation area is not uniform, it changes with the radius of curvature changes. As the theory is more difficult to explore, the corresponding formula is an approximation. This has brought a design and production of molds in production