punch forming

基本解释

Compared with multi stage rigid punch forming, aluminum alloy ladder sheet part can be formed in one stage with VPF;
对于采用多道次刚模拉深成形的铝合金阶梯形板件，可以一次拉深成形；
The one-way punch forming process used for brass valve body was introduced, some instructive suggestions for improving the process were put forward.
针对黄铜阀体单向冲压成形生产中存在的问题，提出了改进措施。
Compared with simulation results with metal punch forming, the necking and wall thickness reduction on smaller radius surface can be avoided or decreased with VPF.
与钢凸模成形相比较，可以避免局部较小半径曲面之间的严重颈缩；

冲压成型
Firstly, simulated the punch forming of the billet with the FEM simulation method, analyzed the metal flow in the deformation process; obtained the formed punch unit pressure distribution situation and how the pressure change with stroke; analyzed the stress situation of the cavity die inwall in the deformation process detailed, and knew how the deformation band, friction condition, deformation degree and deformation material influence the cavity die inwall lateral pressure through changing deformation condition.
首先,采用有限元模拟方法对钢坯的冲压成型过程进行模拟,分析了变形过程中金属的流动变形情况;得到了冲头的单位压力分布及冲头压力随行程的变化情况;详细的分析了变形过程中冲孔模内壁的受力情况,并且通过改变变形条件的方法分别得出了变形区域、摩擦条件、变形程度及变形材料等参数对冲孔模内壁压力的影响。