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
两最远临界接触点的夹角大小比拟

青华模具培训

; t9 z2 r' h- O9 M6 ]9 Q# n4 |
& p  Q; z' m. @, A# Q; ~: K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
2 k  H$ C; b. h. l结果与讨论

青华模具培训

Results and discussions (continued)
3 B+ F2 |  O) K1 O8 d, n5 b' Z
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)

Comparison 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-
2 ^' y3 m& D, ~2 k' `0 u+ sback Algorithm (DESA) and the Tool Surface
- f% n2 J$ E3 \, E& X+ RCompensation Method (TSCM) are proposed. The
formula of the critical  damping coefficient for  DESA is
provided. The springback results of the  truck  carling
. D1 t$ A% L  @. o) g5 Fshows that the present method is valid, the effect of the
5 M0 N: r* C( n1 {springback compensation is verified by the tool surface
; V: q% D! a6 u  w. h7 Tcompensation scheme.

mazhaofaoo

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