Developed excogitates of two decumbence and one hovizoutal molding die realized increasing height of branch pipe of heat pressure tee and reducing radius of synodical arc of tee.

研制出两套立式模具和一套卧式模具，实现了用工艺方法增加热挤压三通支管高度，缩小三通相贯区内拐角处圆弧半径的目的。

The optimization of drawing technique was researched, and the influence of different blank holder force and minimum die fillet radius on stamping forming was studied as well.

对该零件成形工艺进行了优化，研究了不同的压边力、最小模具圆角半径对冲压成形的影响，通过对模拟结果的分析得出了空调前板的最优化成形方案。

NIB : Green roller defect on the small end radius; caused by taper die failure. A sharp protrusion on the small end of the roller.

由于圆锥模具缺陷造成的半成品滚子小端倒角缺陷， 滚子小端有尖锐的突出。