汽车覆盖件逆向设计及其模具设计

汽车覆盖件逆向设计及其模具设计汽车车门外板计算机辅助逆向设计 中国石油大学（华东）毕业设计 中国石油大学（华东）本科毕业设计 摘 要 本文所讨论的汽车覆盖件的数字化建模，在现代汽车制造业中起到了非常重要的作用。本文以富康牌小轿车左后门作为讨论对象，进行了车门的曲面逆向重构及车门覆盖件模具设计。 文章对车门外板利用三维激光扫描仪进行三维坐标测量得到点云数据，对所得点云数据使用逆向工程软件 CATIA 进行预处理。包括点云的抽稀、修剪、补洞、形成三角网格等；用 CATIA 软件对其进行逆向工程加工，即进行曲面重构，得到重构出的车门曲面；以重构出的曲面为基础，对车门外板的拉伸模具进行结构设计，在 SolidWorks 软件中做出凸模、凹模和压料圈等结构；在此基础上，计算拉伸模具的冲压过程中模具的受力情况，利用 SolidWorks 软件中的Simulation 对拉伸模具进行有限元分析。 关键词：汽车覆盖件；逆向工程；拉伸模具；有限元分析 中国石油大学（华东）本科毕业设计 ABSTRACT This task is about the Digitized Modeling of the automobile panels, which plays an important role in the Automobile Manufacture in modern times. In this article, we select the left back door to carry on a series of investigation including surface reconstruction and drawing dies. In this thesis, we use the Three-dimensional to scan the car door panels, and we achieve the point cloud. Then we choose CATIA, which is a high-class software of Inverse Engineering, to process the data. Next ，it’s the processing of the point cloud and surface reconstruction. As the surface finished, the drawing dies need to be modeled. To meet the challenge, we construct them by the software of SolidWorks. There are three parts in the drawing dies, which are punch, die and blank-holder. On the basic of the drawing dies, we need to analyze the load-carrying capability of the drawing dies. As a result, there is some CAE Analysis by SolidWorks Simulation. Keywords: Automobile Panels, Inverse Engin...