|
摘要：
|
|
针对浅球壳零件冲压过程中可能存在的起皱、回弹等缺陷，借助Dynaform软件对浅球壳的冲压过程和回弹进行了有限元仿真分析。首先，对比了不同润滑、不同压边力条件下的成形情况，当摩擦系数为0.1时，需要压边力为600 kN才不会内皱，当摩擦系数为0.2时，需要压边力为200 kN才不会内皱。并且得到最优坯料的外径为Φ440 mm，壁厚为2.05 mm。其次，对浅球壳冲压进行了回弹分析，发现其口部回弹最大，回弹量为0.805 mm。最后，在仿真分析的基础上进行了回弹逆向补偿，并进行了实际冲压试验，其结果与有限元模拟结果基本吻合。研究表明，仿真分析可以为浅球壳的冲压成形及工艺参数优化提供依据，降低了生产成本，提高了设计生产水平。
|
|
Aimed at the possible wrinkles, springback during the forming process of shallow spherical shell，the stamping process and spingback of shallow spherical shell were simulated and analyzed by software Dynaform. First of all, the forming conditions under different lubrication conditions and different blank holder forces were compared, when the friction coefficient was 0.1 and 0.2，the internal wrinkle was not occurred on the premise that the blank holder force was above 600 kN and 200 kN respectively. Then, the optimum blank was Φ440 in diameter and 2.05 mm in thickness. Secondly, the springback analysis of shallow spherical shell was carried out, and the largest springback amount 0.805 mm was found at its aperture. Finally, the springback compensation was conducted on the basis of simulation analysis, and the actual stamping test was carried out which were in good agreement with the finite element simulation results. The results show that the simulation analysis can provide the basis for the stamping and the optimization of process parameters of shallow spherical shell and reduce the production cost and improve the design level.
|
|
基金项目：
|
|
中国工程物理研究院精密实验室资助项目(K848-13-JSS)
|
|
作者简介：
|
|
杨文华(1988－)，男，硕士，工程师
E-mail： ywh060962@126.com
|
|
参考文献：
|
［1］卢志文, 沈祥智, 张洪峰. 镁合金手机外壳的冲压工艺研究
［J］. 材料导报, 2006, 20(7): 147-149.
Lu Z W,Shen X Z,Zhang H F. Study on stamping technology of magnesium alloy mobile telephone case
［J］. Materials Review, 2006, 20(7): 147-149.
［2］李慧琴, 陈刚, 丁国,等. 板料拉深过程中起皱的实验研究
［J］. 包头钢铁学院学报, 2004, 23(7): 283-285.
Li H Q,Chen G,Ding G,et al. The experimental study of wrinking in sheet drawing
［J］. Journal of Baotou University of Iron and Steel Technology, 2004, 23(7): 283-285.
［3］张海龙, 刘劲松, 王守东, 等. 304L碟形封头冲压回弹研究
［J］. 锻压技术,2016, 41(1): 43-47.
Zhang H L, Liu J S, Wang S D, et al. Research on springback of dished head 304L
［J］. Forging & Stamping Technology, 2016, 41(1): 43-47.
［4］龚志辉, 兰典, 钟剑, 等. 汽车覆盖件回弹逆向补偿过程中回弹量的精确计算
［J］. 锻压技术,2017, 42(2): 21-27.
Gong Z H, Lan D, Zhong J, et al. Precise calculation of springback for reverse compensation of auto-body panel
［J］. Forging & Stamping Technology, 2017, 42(2): 21-27.
［5］白雪, 胡建华, 樊浩森, 等. 汽车后围板拉深成形过程中的回弹预测
［J］. 锻压技术,2017, 42(9): 42-45.
Bai X, Hu J H, Fan H S, et al. Springback prediction in deep drawing of automobile back panel
［J］. Forging & Stamping Technology, 2017, 42(9): 42-45.
［6］周朝辉, 曹海桥, 吉卫, 等. Deform有限元分析系统软件及其应用
［J］. 热加工工艺, 2003, 32 (4): 51-52.
Zhou C H，Cao H Q，Ji W，et al. Application of Deform limitedliability analysis system software
［J］. Hot Working Technology, 2003, 32(4): 51-52.
［7］陈小芳, 扶名福, 袁志军. Dynaform数值模拟技术在汽车覆盖件成形中的应用
［J］. 热加工工艺, 2009, 38 (11): 89-92.
Chen X F, Fu M F, Yuan Z J. Application of Dynaform numerical simulation in automobile covering parts forming process
［J］. Hot Working Technology, 2009, 38(11): 89-92.
［8］周海龙, 张亚岐, 穆传坤, 等. 热轧厚板件冲压成形与回弹分析
［J］. 锻压技术,2017, 42(9): 51-55.
Zhou H L, Zhang Y Q, Mu C K, et al. Analysis on stamping and springback of hot rolled thick plate
［J］. Forging & Stamping Technology, 2017, 42(9): 51-55.
|
|
服务与反馈：
|
|
【文章下载】【加入收藏】
|
|
|
|
