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
; y% c  b3 u0 [$ \8 l* r8 r0 D5 i0 \, W两最远临界接触点的夹角大小比拟

青华模具培训

( s" ~# v9 g9 Q0 A; a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
8 X% _8 g8 C# S4 K0 _* ?4 Q2 L3 G9 Q结果与讨论

青华模具培训

Results and discussions (continued)
6 h; T" ?' L2 W: D0 Z1 I
9 U4 g0 x  e) T3 V3 t$ K1 n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)
. {% P+ ]7 ^' T- |0 e( M& P- B
6 E; c) H  e2 k) \; KComparison Between Designed and Compensated Tool Surface, which
means z-coordinate difference between the two surface shapes on the section A-B
before and after compensated

青华模具培训

结论
„ A combination scheme of the Dynamic Explicit Spring-
# o  e* p# Y4 c$ i; ~2 N$ e; Tback Algorithm (DESA) and the Tool Surface
. @, o' ~; |, o" g( dCompensation Method (TSCM) are proposed. The
) q7 w; A. h* z* |  pformula of the critical  damping coefficient for  DESA is
! M% ]4 W8 C5 x* |provided. The springback results of the  truck  carling
2 s3 r: M8 O% [9 b( n) rshows that the present method is valid, the effect of the
springback compensation is verified by the tool surface
compensation scheme.

mazhaofaoo

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