中文摘要：

基于UGNX平台开发了汽车覆盖件翻边成形与运动仿真系统FFAW（Flanging Forming Analysis Wizard）。该系统采用模具曲面自动离散小平面技术，在NX建模环境下实现了汽车覆盖件翻边成形模拟的模具装配，避免了在NX装配环境下更新保存速度慢和零件切换显示复杂。同时，利用离散的小平面体实现了翻边过程仿真，解决了翻边成形工艺工具体的装配和干涉问题。FFAW系统充分考虑了翻边冲压方向、斜楔运动方向、驱动角以及翻边行程等工艺参数，能够反映真实冲压环境下的翻边成形过程，并通过工具体的装配定位、测距和动画显示等功能对其运动情形进行检查。最后通过某汽车零件的实例分析，证明了系统的有效性和实用性。

英文摘要：

The FFAW （Flanging Forming Analysis Wizard） system of flanging and motion simulation of automobile panel based on NX was developed. The automatic discrete facet technology of die surface was applied, and die assembly of flanging simulation of automobile panel in NX modeling environment was realized to avoid slow saving and updating and the complex switching process in NX assembly envi- ronment. With the discrete facet body, flanging simulation was applied to solve the problems of assembly and interference in the flanging process tools. Technological parameters such as stamping direction of flanging, moving direction of the wedge, driving angle and flange stroke were considered comprehensively in this system. The flanging process in real - time stamping environment was displayed and the die movement was checked by the function of assembly position, distance measurement and animation display. Finally, a particular example of auto parts was given to illustrate the effectiveness and usefulness of this system.