中文摘要：

汽车板料包边质量的好坏直接影响汽车的外形美观和板料之间装配，而板料包边产生的边界缩进决定着汽车板料包边质量，因此对板料包边边界缩进控制的是汽车生产中的关键问题之一。将田口方法应用于汽车板料包边稳健性设计中，根据生产经验和积累数据初步设定影响板料包边后缩进值的设计参数，利用有限元分析软件LS—DYNA建立汽车板料包边的有限元模型。采用正交矩阵试验方案，通过该方案确定对包边缩进值的敏感参数，并提出了最优化设计方案，使得板料边界缩进量减少了43．9％。试验结果表明：田口方法结合有限元方法能够在较短时间内，利用少量的试验次数为汽车板料包边缩进值的控制提供一种快速和可靠的解决方案。

英文摘要：

The quality of automobile sheet metal hemming directly influence the vehicle styling and assembling of different sheet metals, and the edge roll-in is the main problem in the process of vehicle sheet metal hemming. We applied an innovative Taguchi＇s method to robust parameters design for sheet metal hemming. According to the ex- perience and data collected from the process of production, the design parameters are set preliminarily. Then, the finite element simulation software LS-DYNA was used to build the model. Orthogonal design was used to analyze the whole process of sheet metal hemming, and the sensitive controllable factors were identified. Finally, the optimal scheme was proposed, and the edge roll-in is decreased by 43.9%. From the results of these experiments, Taguchi＇s method combined with finite element method can provide a fast and reliable solution in shorter time and with fewer experiments.