吉林大学学报(工学版) ›› 2021, Vol. 51 ›› Issue (4): 1182-1189.doi: 10.13229/j.cnki.jdxbgxb20200807

• 车辆工程·机械工程 • 上一篇    

工艺参数对汽车防护梁绕弯成形的截面变形影响

金文明1,2(),梁田1,2,梁策1(),李义1,李俊涛1,3,梁继才1,2   

  1. 1.吉林大学 材料科学与工程学院，长春 130022
    2.吉林大学 辊锻工艺研究所，长春 130022
    3.长春富维安道拓汽车饰件系统有限公司，长春 130033
  • 收稿日期:2020-10-16 出版日期:2021-07-01 发布日期:2021-07-14
  • 通讯作者: 梁策 E-mail:j.wm@163.com;liangce@jlu.edu.cn
  • 作者简介:金文明（1962-），男，副教授. 研究方向：材料加工. E-mail： j.wm@163.com
  • 基金资助:
    吉林省发展和改革委员会项目(2019C046-2);吉林省科技厅自然科学基金项目(20190201110JC)

Influence of process parameters on cross-sectional deformation of rotary draw bending forming of automobile protective beams

Wen-ming JIN1,2(),Tian LIANG1,2,Ce LIANG1(),Yi LI1,Jun-tao LI1,3,Ji-cai LIANG1,2   

  1. 1.College of Materials Science and Engineering，Jilin University，Changchun 130022，China
    2.Roll Forging Institute，Jilin University，Changchun 130022，China
    3.Changchun Faway Adient Automotive System Co. ，Ltd. ，Changchun 130033，China
  • Received:2020-10-16 Online:2021-07-01 Published:2021-07-14
  • Contact: Ce LIANG E-mail:j.wm@163.com;liangce@jlu.edu.cn

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摘要：

针对“日”字截面型材在绕弯成汽车防护梁过程中产生的截面变形缺陷，基于自主研发的绕弯装置，利用有限元分析软件ABAQUS和正交试验模拟方法，探究了工艺参数中绕弯半径，芯棒的芯头数及芯模间隙对截面变形的综合影响规律。结果表明：最大变形截面位置受芯头个数的影响；截面的各变形量都随绕弯半径和芯头个数的增加而减小，随芯模间隙先减小后增大；工艺参数组合为绕弯半径600 mm，芯头数为2，间隙为0.75 mm的防护梁成形方案减轻截面变形效果较好，并且通过试验验证了模拟结果的有效性。

关键词: 材料成形与加工, 绕弯成形, “日”字截面型材, 截面变形缺陷, 正交试验

Abstract:

To solve the cross-section deformation defects in the process of rotary draw bending the profile with “日”-shaped into the automobile protective beam, based on the self-developed bending device, the finite element analysis software ABAQUS and the orthogonal test simulation method are used. The comprehensive influences of the process parameters on the cross-section deformation, including bending radius, number of cores and core mold gap are investigated. The results show that the position of the maximum deformation section is affected by the number of cores, each deformation of the section decreases with the increase of the bending radius and the number of cores, first decreases and then increases with the die gaps. When the bending radius is 600 mm, the number of cores is 2, and the gap is 0.75 mm, the effect of reducing cross-section deformation is better, and the validity of the simulation results is verified by experiments.

Key words: manterial synthesis and processing, rotary draw bending forming, profile with “日”-shaped section, sectional deformation defects, orthogonal experiment

中图分类号: 

  • TG356

图1

型材横截面示意图及尺寸"

图2

绕弯装置有限元模型及工作原理示意图"

图3

活动压模参考点D的运动轨迹图"

图4

截面变形图及型材截面的变形量的描述"

表1

因素和水平"

水平因 素
半径/mm间隙/mm芯头数
14000.250
25000.751
36001.252
41.75

图5

测量截面及节点位置"

图6

绕弯半径对各截面变形量的影响"

图7

芯头个数对各截面变形量的影响"

表2

工艺参数组合"

试验半径/mm间隙/mm芯头数
16000.252
26000.752
36001.252
46001.752

图8

间隙对各截面变形量的影响"

图9

绕弯机及防护梁半成品"

图10

实验中的各变形量"

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