板金属回弹仿真与模面补偿方法

青华模具培训

高强钢板沿与轧制方向上成90度方向下料时，冲头圆心与板材
5 a0 n! R7 \1 L$ y两最远临界接触点的夹角大小比拟

青华模具培训

/ J- V8 S+ @2 Y! Z* B7 y
$ f8 ^) k9 E3 Z9 R- P结果与讨论
1.  一汽集团大卡车纵梁

青华模具培训

2.  卫星天线模具外表回弹补偿
5 l4 x0 g% {1 h: j8 |+ N% N: v" t结果与讨论

青华模具培训

Results and discussions (continued)
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工具补偿算法得到的回弹后的⊿z 坐标 （最大误差1.13mm）

青华模具培训

Results and discussions (continued)
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4 e! X+ j4 ?7 K* O8 AComparison Between Designed and Compensated Tool Surface, which
means z-coordinate difference between the two surface shapes on the section A-B
7 {  f, p6 k& T8 Y' Q! ]before and after compensated

青华模具培训

结论
4 ]. W8 M9 y/ L5 }* v„ A combination scheme of the Dynamic Explicit Spring-
back Algorithm (DESA) and the Tool Surface
, p2 h: Q8 N* m" c% ^, LCompensation Method (TSCM) are proposed. The
formula of the critical  damping coefficient for  DESA is
provided. The springback results of the  truck  carling
& Q9 O( B* [5 y: R& W, u- Fshows that the present method is valid, the effect of the
' \. [0 l8 H9 s& A1 O  j# _4 F; {springback compensation is verified by the tool surface
/ L% s2 W: r8 k6 w  H' y6 _: y4 vcompensation scheme.

mazhaofaoo

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