介绍形成小圆角半径的圆孔翻边模具的结构特点，按体积不变的原则，推导了计算公式。
Die structure based on the process of forming small fillet radius is introduced, and deduced the formula according to the principle of volume invariably.
将双向运动斜楔与旋转斜楔进行了对比，在侧围板外覆盖件翻边模具中采用旋转斜楔成形机构，大大提高了生产效率。
The application of the rotational graded wedge mechanism in a flanging die for the shell plate metal sheets greatly raises the production efficiency.
试验所获应变分布表明，带孔件在变形过程中存在拉深和翻边两种变形趋向性，在模具参数和工艺条件完全相同的情况下，其可能的变形趋势与孔的尺寸有关。
The results showed that, there is a deformation tendency of drawing, and flanging and the tendency is related to, in the same parameter of die and the same technological conditions, the hole size.
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