锻压技术

基于AutoForm模拟的汽车B柱加强板热冲压工艺分析与优化设计

英文标题：Analysis and optimization design on hot stamping process for automobile B-pillar reinforcement plate based on AutoForm simulation

作者：梁发周钟圣滔

单位：南昌航空大学科技学院机械材料学部

关键词：B柱加强板法兰边起皱热冲压工艺拉延槛拉延筋

分类号：TH162

出版年,卷(期):页码：2022,47(12):75-80

摘要：

利用AutoForm软件对B柱加强板热冲压过程进行成形工艺模拟，并针对分析过程中出现的起皱现象，分析其起皱原因后对零件模面进行调整、优化，通过在法兰边处增加拉延槛和拉延筋以及优化下模压料板的压料间隙值来解决B柱法兰边起皱以及侧壁局部减薄的问题，对结果进行优化设计、对比优化前后的分析结果，选出最优的设计方案。通过分析和优化改进，采用B柱大头端上模压料板的压料力为60 kN、中间压料板的压料力为20 kN、下模压料板的压料间隙为1.4 mm、保压力为3000 kN、保压时间为7 s的工艺参数进行拉延成形仿真模拟，得到的零件无开裂和起皱缺陷，表面质量较好，满足加工工艺要求，可有效缩短模具的开发周期和成本。

The hot stamping process of B-pillar reinforcement was simulated by software AutoForm, and for the phenomenon of wrinkling in analysis process, the causes of wrinkling were analyzed. Then, the die surface of part was adjusted and optimized, and the problems of wrinkling at the flange edge for B-pillar and local thinning of the side wall were solved by adding edge-bead and draw bead at the flange edge and optimizing the pressing gap value of lower die pressing plate. Furthermore, the results were optimized and designed by comparing the analysis results before and after optimization, and the best design scheme was chosen. Through analysis and optimization, the drawing simulation was carried out by using the process parameters that the pressing force of upper die pressing plate in the big end of B-pillar is 60 kN, the pressing force of middle pressing plate is 20 kN, the pressing gap of lower die pressing plate is 1.4 mm, the holding pressure is 3000 kN and the holding time of 7 s. The parts are obtained without cracking and wrinkling defects, and the surface quality is good, which meets the requirements of process and effectively shortens the development cycle and cost of die.

基金项目：

江西省教育厅科技项目（GJJ218703）

梁发周（1975-），男，硕士，讲师 E-mail：471057366@qq.com

参考文献：

[1]方昕. 基于全电伺服压力机及多层箱式加热炉的热冲压成形生产线整体解决方案[J].锻压装备与制造技术,2018,53(2):23-26.

Fang X. Brief discussion on overall solution of hot stamping production line based on all-electromechanical servo press and multi-layer box heating furnace [J].China Metalforming Equipment & Manufacturing Technology,2018,53(2):23-26.

[2]李春友. 基于Autoform的加强板冲压工艺仿真与优化设计[J].热加工工艺,2013,42(3):90-93.

Li C Y. Simulation and optimization design on stamping process of reinforcing plate based on Autoform software[J]. Hot Working Technology,2013,42(3):90-93.

[3]朱帅, 孙福臻,曹晓擎,等.基于AutoForm模拟的热冲压工艺优化设计[J].模具工业,2019,45(11):1-5.

Zhu S, Sun F Z, Cao X Q, et al. Optimization design of hot stamping process based AutoForm simulation[J]. Die & Mould Industry,2019,45(11):1-5.

[4]朱帅, 孙福臻,张泉达,等.基于AUTOFORM模拟的顶盖前边梁加强板热冲压工艺[J].精密成形工程,2020,12(4):146-151.

Zhu S, Sun F Z, Zhang Q D, et al. Hot stamping process for the front side beam strengthening plate of the roof based on AUTOFORM[J]. Journal of Netshape Forming Engineering,2020,12(4):146-151.

[5]陈学健, 黄昭明.车身覆盖件拉延模面优化与成形仿真[J].韶关学院学报,2018,39(6):57-60.

Chen X J, Huang Z M. Optimization and forming simulation of drawing die for a body panel [J]. Journal of Shaoguan University,2018,39(6):57-60.

[6]陈泽中, 李响,刘欢,等.基于Dynaform的SUV汽车B柱热冲压成形仿真分析与工艺研究[J].塑性工程学报,2019,26(4):113-119.

Chen Z Z，Li X, Liu H, et al. Simulation analysis and process research of hot-stamped SUV B-pillar based on Dynaform[J]. Journal of Plasticity Engineering,2019,26(4):113-119.

[7]李建军. 拉延筋与拉延槛的设计方法[J].客车技术,2009，(5):35-36.

Li J J. Design method of drawbead and edge-bead[J]. Bus & Coach Technology,2009，(5):35-36.

[8]李飞舟. 基于Autoform的汽车覆盖件成形有限元分析[J].热加工工艺,2010,39(15):111-113.

Li F Z. Analysis of forming simulation for automotive panel based on Autoform[J]. Hot Working Technology,2010,39(15):111-113.

[9]周志伟, 龚红英,赵小云,等.基于RSM与GA的汽车后备箱盖板成形工艺参数多目标优化[J].锻压技术,2021,46(3):75-81.

Zhou Z W,Gong H Y,Zhao X Y,et al. Multi-objective optimization on process parameters for automobile trunk cover based on RSM and GA[J]. Forging & Stamping Technology, 2021,46(3):75-81.

[10]赵运运. 汽车B柱加强板热成形工艺研究[D]. 合肥: 合肥工业大学,2017.

Zhao Y Y. Research on Hot Forming Process of Automobile B-pillar reinforcing Plate[D]. Hefei: Hefei University of Technology,2017.

[11]尤彬波, 林楷,谢育涛,等. A柱加强板热成形拐角开裂起皱优化[J]. 锻压技术,2021,46(3):105-110.

You B B，Lin K，Xie Y T，et al. Optimization on wrinkle and crack at corner of A-pillar reinforcement panel in thermoforming [J]. Forging & Stamping Technology，2021,46(3):105-110.

[12]王章忠, 巴志新,李琦,等.热冲压工艺参数对22MnB5马氏体钢汽车B柱性能影响的有限元模拟[J].金属热处理,2020,45(5):221-228.

Wang Z Z,Ba Z X, Li Q,et al. Finite element simulation of influence of hot stamping process parameters on properties of 22MnB5 martensitic steel for automobile B-pillar[J]. Heat Treatment of Metals,2020,45(5):221-228.

服务与反馈：

【文章下载】【加入收藏】