punch forming

Wearing and fracture on the punch often apoccur during the forming cylinder of in which a warm backward extrusion process is employed.

采用温挤压成形工艺生产减速顶滑动油缸体时，冲头经常会出现磨损和断裂失效。

Then, the concept of end-face shape function of male punch is presented, and the impact of end-face shape function on the gear filling property and the material non-uniformity of forming were analyzed.

提出了凸模端面形状函数概念，并具体分析了端面形状函数对齿形充填性和材料变形不均匀性的影响；

Elastic-plastic Analysis of Stainless Steel Spherical Shell Punch Press Forming CAM System

不锈钢球壳冲压成形CAM系统的弹塑性分析

Punch friction test in sheet metal forming

板成型时摩擦的试验测定

The paper's important content and production are: ( 1) Set up three-dimensional elastic-plastic FE model for incremental sheet forming. Realize continuous simulation process for incremental sheet forming through imposing time-displacement curve to control its motion on the punch;

建立渐进成形工艺三维弹塑性有限元模型，通过对成形头运动施加时间-位移控制，实现了连续模拟过程；