复合垫层在多点模蒙皮拉形中的应用

Application of composite interpolator pad on skin stretch forming use multi-point tool with

采用柔性垫层是抑制和消除多点模拉形过程中零件表面缺陷的重要措施。文章设计和制造了3种具有不同增强结构的新型柔性垫层,使用这些新型垫层进行了实际蒙皮拉形实验,并在拉形过程中使用三维非接触光学测量方法进行了零件型面数据的在线测量。实验结果表明,各种复合结构垫层仅以较小的厚度即可有效地抑制各种零件型面缺陷的产生,并且各种复合垫层在成形时的厚向变形均匀度均优于单纯橡胶垫层,其中,以离散钢板条为增强结构的复合垫层效果最佳。

Using flexible interpolator pad is an important way to suppress the part surface defect in stretch-forming process on multi-point tool. This paper designed and made three interpolator pads with different strength structure. Skin stretch forming ex- periments have been made with these composite pads and the part surface＇s online measurements have done with 3rd optical meas- urement device. The experiment result shows that, all three composite pads can suppress the part surface defects by less thick- ness, and with more thickness deformation uniformity than the normal pure rubber pad.