锻压技术

针对激光切割实时回弹的修边线的研究

英文标题：Research on trimming line of real-time springback in laser cutting

作者：谢晖孟腾逸钟志华

单位：湖南大学

关键词：激光切割修边线回弹分块分析冲压

分类号：

出版年,卷(期):页码：2016,41(7):27-33

摘要：

激光切割过程中制件会不断出现应力释放的现象，从而产生持续变化的回弹，受此影响，工件的形状会随切割过程的进行产生变化，导致激光切割完成时制件与设计零件产生较大的偏差。针对这一问题，提出一种根据激光切割修边时序分步考虑回弹的更新修边线方法。将制件按切割次序分块计算回弹量并沿着切割方向依次对修边线进行相应的补偿处理，以解决修边时实时发生回弹影响制件精度的问题。以宝钢某车身零件的激光切割修边线确定为算例，验证了方法的可行性。

The phenomenon of stress release occurs continuously in parts during laser cutting process, which results in a continuous change of springback. Therefore, the shape of parts changes with the cutting process, and a large deviation between the laser cutting parts and initial design parts occurs. In order to solve this problem, a method of updating trimming line was put forward according to laser cutting timing sequence and considering springback step by step. The part precision affected by real-time springback trimming process was improved by calculating the springback block by block according to the cutting sequence, and then compensating the corresponding trimming line along the cutting direction. The above method was verified by the determination on a trimming line of laser cutting for Baosteel body parts.

基金项目：

国家科技重大专项“铝合金车身零部件典型成形工艺及关键装备技术研究”（2014ZX04002-071）

谢晖（1971-），男，博士，教授，博士生导师

参考文献：

[1]赵蓓．产业群嵌入性和竞争力：计量分析[J].厦门大学学报，2005，44(2)，98-106.

Zhao B. Industrial cluster embedding and competitiveness: quantitative analysis[J]. Journal of Xiamen University, 2005,44（2）:98-106.

[2]Yi Dongbao，Hoon Huh.Optimum design of trimming line by one-step analysis for auto body parts[J].Journal of Material Processing Technology，2007，187-188：108-112.

[3]聂昕，成艾国，钟志华，等.比例因子法在冲压件外轮廓线优化中的应用[J].中国机械工程，2007，18(1)：90-94.

Nie X,Cheng A G，Zhong Z H，et al.Application of scale coefficient method in the optimization of sheet metal part profile[J].China Mechanical Engineering，2007，18(1)：90-94.

[4]曹颖，李大永，李峰，等.翻边过程成型性预示及修边线位置确定[J].武汉工业大学学报，2000，22(4)：43-45,64.

Cao Y，Li D Y，Li F，et al.Prediction of flanging and determination of trimming line[J].Wuhan Industry University Press，2000，22(4)：43-45，64.

[5]周军，马闯，钟志华.基于计算机仿真技术的薄板冲压成型毛坯形状和尺寸反算[J].计算机仿真，2002，19(1)：86-89，110.

Zhou J, Ma C, Zhong Z H. The shape and size of sheet metal stamping forming based on computer simulation technology [J]. Computer Simulation, 2002, 19 (1):86-89,110.

[6]周军.车身覆盖件冲压成形 CAE 专用后处理系统的开发 [D]. 长沙: 湖南大学,1999.

Zhou J. The Development of Special Purpose Postprocessing System for Stamping Forming of Automobile Body Panels [D]. Changsha: Hunan University, 1999.

[7]Wang C T,Gary Kinzel,Taylan Altan.Wrinkling criterion for an anisotropic shell with compound curvatures in sheet forming[J]. Int. J. Mech. Sci., 1974,36(5): 945-960.

[8]Wang C T, Serdar Tufekci,Taylan Altan,et al. Investigation of shrink flanging-prediction of wrinkling and experimental verification[J].SAE Paper, 1994,21(9):3-9.

[9]Wang N M. Large plastic deformation of a circular sheet caused by punch stretching[J]. Journal of Applied Mechanics, 1970, 37(1):431-440 .

[10]Wang N M, Tang S C.Analysis of bending effects in sheet forming operation[A]. Proceeding of NUMIFORM86[C]. Rotterdam，1986.

[11]Wang N M, Budiansky B.Analysis of sheet metal stamping by a finite element method[J]. Journal of Applied Mechanics, ASME,1978,100(2):77-86.

[12]陈炜.冲压成形数值模拟在车身制造中的应用研究[D].苏州：江苏大学，2003.

Chen W. Application Research of Numerical Simulation of Stamping Process in Automobile Body Manufacturing[D]. Suzhou: Jiangsu University,2003.

[13]Manach P Y,Thuillier S, Menezes L F, et al. Experimental and numerical investigation of springback influence of the work hardening model[A]. 5th International Conference and Workshop on Numerical Simulation of 3D Sheet Forming Processes Numisheet 2002[C]. Korea:Jeju Island，2002.

[14]廖代辉，成艾国，钟志华.复杂零件切边线的计算方法及其应用[J].计算机仿真，2007，24（1）：250-253，294.

Liao D H，Cheng A G，Zhong Z H. Calculation method of complex parts cutting line and its application [J]. Computer Simulation，2007，24（1）：250-253，294.

[15]廖代辉.汽车覆盖件修边线计算方法研究及工程应用[D].长沙：湖南大学，2006.

Liao D H. Trimming Line Calculation Study and Engineering Application of Automobile Covering Method [D]. Changsha: Hunan University，2006.

[16]杨光，胡平，吴志强.板材冲压切边回弹有限元模拟中的切边处理技术[J].塑性工程学报，2004，11（5）：5-8.

Yang G，Hu P，Wu Z Q. The finite element simulation of springback in sheet metal stamping process [J]. Plastic Engineering Journal，2004，11（5）：5-8.

服务与反馈：

【文章下载】【加入收藏】