| 基于板料网格变形的翻边工序修边线确定方法 |
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| 引用本文： | 刘迪辉,申光举,李光耀,陈卓.基于板料网格变形的翻边工序修边线确定方法[J].机械工程学报,2010,46(8). |
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| 作者姓名： | 刘迪辉 申光举 李光耀 陈卓 |
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| 作者单位： | 1. 湖南大学汽车车身先进设计制造国家重点实验室,长沙,410082
2. 重庆长安汽车股份公司汽车研究院,重庆,401124 |
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| 基金项目： | 国家杰出青年科学基金(50625519);;长江学者和创新团队发展计划(IRT0718);;汽车车身先进设计制造国家重点实验室自主课题青年基金(70873004)资助项目 |
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| 摘 要： | 车身零件翻边前一般有修边工序,需要准确的修边线,否则翻边后零件达不到零件尺寸要求。为减少修边模的开发周期和成本,提出一种基于板料网格变形的修边线确定方法。在零件毛坯上蚀刻上正方形网格,进行翻边前的一些工序;根据估计的修边线,得到翻边前的零件形状,测量出翻边前在修边区域上各网格点的坐标;对零件进行翻边,测量出翻边前后在修边区域上各网格点的坐标;根据翻边前后的零件网格以及翻边后零件的边缘线,通过翻边前后网格比例变形关系确定出翻边前修边线位置。如果试冲零件边缘线有误差,可反复采用这种方法优化修边线。这种方法可在模具调试或在仿真中采用。采用一个汽车地板零件的修边线确定算例,验证了上面提出的方法的可行性。
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| 关 键 词： | 冲压 修边线 网格 车身 |
New Method to Obtain the Trimming Line in Flanging Process Based on Blank Grid Deformation |
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| LIU Dihui,SHEN Guangju,LI Guangyao,CHEN Zhuo.New Method to Obtain the Trimming Line in Flanging Process Based on Blank Grid Deformation[J].Chinese Journal of Mechanical Engineering,2010,46(8). |
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| Authors: | LIU Dihui SHEN Guangju LI Guangyao CHEN Zhuo |
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| Affiliation: | 1.State Key Laboratory of Advanced Technology for Vehicle Body Design & Manufacturing/a>;Hunan University/a>;Changsha 410082/a>;2.Research Institute of Chang'an Automotive Manufacturing Co.Ltd./a>;Chongqing 401124 |
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| Abstract: | Before flanging auto-body panels,a feasible trimming line should be obtained,otherwise the final part shape after flanging cannot meet the dimensional requirement.To reduce the cost and lead time of developing a trimming die,a method to obtain the trimming line in flange process is proposed on the basis of blank grid deformation.The blank is etched with square grid,and the processes before flanging are carried out.Based on the estimated trimming line,the part shape is obtained,and the coordinates of mesh po... |
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| Keywords: | Stamping Trimming line Grid Car body |
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