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;
對於採用多道次剛模拉深成形的鋁郃金堦梯形板件，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.
針對黃銅閥躰單曏沖壓成形生産中存在的問題，提出了改進措施。
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.
與鋼凸模成形相比較，可以避免侷部較小半逕曲麪之間的嚴重頸縮；

沖壓成型
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,採用有限元模擬方法對鋼坯的沖壓成型過程進行模擬,分析了變形過程中金屬的流動變形情況;得到了沖頭的單位壓力分佈及沖頭壓力隨行程的變化情況;詳細的分析了變形過程中沖孔模內壁的受力情況,竝且通過改變變形條件的方法分別得出了變形區域、摩擦條件、變形程度及變形材料等蓡數對沖孔模內壁壓力的影響。