锻压技术

防止座盆拉延件开裂的工艺改进

英文标题：Improvement of stamping process to prevent drawing parts of car cushion from cracking

作者：刘驰

单位：柳州职业技术学院

分类号：TG386

出版年,卷(期):页码：2014,39(3):20-24

摘要：

由于汽车座盆型面复杂，拉延成形中极易产生破裂等缺陷。针对某车型座盆拉延工序两处开裂问题，在不改变零件材料的前提下，通过改进冲压工艺解决了开裂问题。该工艺改进方法为：在拉延模上增加刺破刀，并介绍了两种刺破刀，使裂纹只存在于工艺补充或是待切除的部位，确保了制件的成品率；在拉延工序放大过渡圆角，修边冲孔后在翻边整形工序成形出产品圆角，产品成形后没有出现开裂缺陷。生产实验表明，改进后的成形工艺所生产的汽车座盆拉延件符合零件的技术要求，所设计的拉延模具能满足大批量生产的需要。

Because the car cushion has many complex model surfaces，the fracture defects are often produced in drawing process. Aiming at the uneasy control of cracks for the car cushion in drawing process at two sites, the crack problem was solved by improved stamping process on the condition that part material must not be changed.The improved approach is that adding cracking punch on the drawing die which makes the cracks only exist in the parts of processing supplement or to be cutting,then the yield of products was assured,moreover, two types of cracking punch were introduced. By amplifying the round corner radius in drawing process, the part radius without crack is achieved finally in flanging and sizing process after trimming and piercing process.It is indicated by production practice that the drawing part of car cushion meets the technical requirements after the improvement of stamping process. At last，the good yield product was got, the validity of improvement was verified by the field production．

基金项目：

2012年度广西高等学校一般资助科研项目（201203YB196）;柳州职业技术学院科研项目（2007A02）

参考文献：

［1］高崇晖, 赵震,李玉强,等.汽车覆盖件自动冲压生产线虚拟仿真技术研究[J]. 锻压技术, 2010,35(1):146-148.Gao Chonghui, Zhao Zhen,Li Yuqiang, et al. Research and application of virtual simulation of automatic press line for automobile panel [J]. Forging & Stamping Technology, 2010，35(1): 146-148.
［2］段磊,蔡玉俊 ,莫国强, 等. 汽车覆盖件成形回弹仿真及模面优化研究[J]. 锻压技术, 2010,35(2):34-38.Duan Lei, Cai Yujun, Mo Guoqiang, et al. Research on spring-back simulation and die surface optimization of automotive panel forming process [J]. Forging & Stamping Technology, 2010，35(2): 34-38.
［3］刘罡,程迎潮,江谷明,等.后盖外板上部冲压工艺改进[J]. 锻压技术,2009，34(6): 56-61.Liu Gang, Cheng Yingchao, Jiang Guming, et al. Stamping process improvement of rear cover outer top[J]. Forging & Stamping Technology, 2009，34(6): 56-61.
［4］周宇明. 破裂刀在汽车保险杠拉深模中的应用[J]. 锻压技术, 2011,36(1):108-110.Zhou Yuming. Punch application in truck bumper drawing die[J].Forging & Stamping Technology, 2011,36(1):108-110.
［5］郑宇锋,苏传义,谢文才，等. CAE分析在产品设计阶段的应用[J]. 锻压技术, 2012,37(2):51-54.Zheng Yufeng, Su Chuanyi, Xie Wencai, et al. Application of CAE in the stage of production design[J].Forging & Stamping Technology, 2012,37(2):51-54.
［6］李毅 ,张火土, 李延平,等. 基于正交试验法的车用侧墙板冲压成形工艺参数分析[J]. 锻压技术, 2012,37(2):21-24.Li Yi, Zhang Huotu, Li Yanping, et al. Analysis of stamping process parameters on formability of automotive sidewall plate based on orthogonal experiment[J].Forging & Stamping Technology, 2012,37(2):21-24.
［7］冯杨，刘毅，阮锋.板料弯曲的变薄系数[J].锻压技术, 2009,34(3):51-52.Feng Yang, Liu Yi, Ruan Feng. Thinning coefficient of sheet metal bending[J].Forging & Stamping Technology,2009,34(3):51-52.
［8］李钦生,陈炜,黄振荣,等.汽车顶盖拉延成形研究及工艺参数优化[J].锻压技术,2011,36(5):19-22.Li Qinsheng,Chen Wei,Huang Zhenrong,et al.Research on forming process of automobile cover and technological parameter optimization[J].Forging & Stamping Technology,2011,36(5):19-22.
［9］郑晖,于利凯.汽车前底板冲压工艺分析与拉深模设计[J].锻压技术,2009,34(3):103-105.Zheng Hui,Yu Likai.Analysis of stamping technology and design of drawing die for car front floor boarding[J].Forging & Stamping Technology,2009,34(3) :103-105.
［10］向小汉,汤耀年. 汽车冲压零件材料成本控制的应用与探索[J].模具工业,2012,38(1): 45-49.Xiang Xiaohan,Tang Yaonian. Material cost control of automotive stampings[J].Die & Mould Industry,2012,38(1): 45-49.
［11］周杰, 程丹,阳德森,等. 汽车后轮罩板冲压工艺方案的改进[J]. 汽车工程,2008,30(7):635-638.Zhou Jie,Cheng Dan,Yang Deseng,et al. Improvement of stamping process scheme for vehicle rear wheel arch [J].Automotive Engineering,2008,30(7):635-638.
［12］向小汉. 侧围外板冲压工艺分析[J]. 热加工工艺,2013,42（1):78-81.Xiang Xiaohan.Analysis of stamping process for side wall outer panel [J]. Hot Working Technology,2013,42（1):78-81.
［13］王春香.弹簧卡多工位级进模设计[J]. 锻压技术,2010,35(3): 124-127.Wang Chunxiang.Design of multi-station progressive die for spring clinch[J].Forging & Stamping Technology,2010,35(3): 124-127.

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