It mainly focused on the stamping process of the car rear side member products,aiming to improve the formability of the parts and reduce the springback.In drawing process,smoothed the concave features on the middle of the part and used an upper pressure plate.In the second pro-cess,sizing the concave features to avoid wrinkling.In the third process,the risk of wrinkling in the large vertical wall area was reduced by using a lower support plate for flanging,and the spring-back after flanging was greatly reduced by adding vertical features in the addendum area of the lower half of die.The fifth and seventh process used twice sizing for the large vertical wall area,en-sured that the springback of the vertical wall area could meet the assembly requirements.
关键词
后纵梁/冲压/成形性/回弹/起皱
Key words
rear side member/stamping/formability/springback/wrinkle
维普
万方数据