拉模角和断面缩减决定了变形段的形状,而变形段的形状又决定了拉拔力、中心轴线张力和拉制工艺的某些其他操作特点。拉模设计有时会被认作是一项复杂而又有争议的课题,特别是当考虑到许多几何细节和各种不同的操作条件时就更是如此。作者最近发表了一篇详细讨论机械分析和拉模设计的文章。总之,完全可以这样确切地说:“好的拉模设计往往并不能从单纯的原理推导而出。” The draft angle and the reduction in area determine the shape of the deformable section, which in turn determines the pulling force, central axis tension and some other operational characteristics of the drawing process. Mold design is sometimes considered a complicated and controversial subject, especially when considering many geometric details and various operating conditions. The author recently published an article detailing mechanical analysis and drawing die design. In short, it is quite possible to say exactly: “A good die design often can not be deduced from pure principles.” "