高强板U型纵梁冲压工艺优化设计

Optimized design of stamping process for U beam of high strength plate

采用高强度钢板的纵梁零件,在冲压成形中的主要问题就是回弹、侧壁翘曲和起皱。这三个问题中,尤以回弹和侧壁翘曲较难解决。这两个问题的产生,严重影响到产品的尺寸精度,给后工序的焊接匹配带来很大困难。本文通过各种质量缺陷形成的原理以及仿真分析的结果,论述了纵梁零件在产品设计阶段的预防措施和成形分析中各种参数对成形结果的影响,比如压边力、拉延筋、坯料尺寸、材料性能等,根据影响因素对纵梁的成形工艺进行优化设计。

The main problems in the forming of the longitudinal beam of high-strength steel are springback, sidewall warpage and wrinkling. Among these three problems, rebound and sidewall warpage are particularly difficult to solve. The occurrence of these two problems seriously affects the dimensional accuracy of the product, which brings great difficulties to the welding matching of the subsequent process. Through the principle of various quality defects and the results of simulation analysis, the preventive measures of longitudinal beam parts in the product design stage and the influence of various parameters on the forming results in the forming analysis have been discussed in the text, such as blanking force, drawbead, blank dimensions and material properties, etc. According to the influencing factors, optimized design has been performed to the forming process of the longitudinal beam.