摘要

车门作为一个综合的转动部件和车厢一起构成了乘员舱的空间界面，设计的车门应具有足够大的强度、刚度和良好的振动特性，以满足车门闭合时耐冲击性及与侧碰时的耐撞性等各项性能的要求。本设计在参考了多种车门结构形式的基础上，具体设计了一个分体式前车门。

基于CATIA软件的 “数字化外形编辑器”模块可以快速、方便地对测量点云进行处理，勾勒出零件原型的轮廓特征线。“快速曲面重建”模块可以在点云上建立并处理特征线，拟合出满足一定要求的曲面，“创成式曲面设计”模块可以在已建立的轮廓特征线及基本曲面上进一步进行处理，生成更高质量的曲面。从而完成汽车前门内板的逆向设计。

关键词：分体式；轿车前车门内板；逆向设计

Abstract

The door, as an integrated rotating component and carriage, forms the space interface of the cabin. The door should be designed with enough strength, stiffness and good vibration characteristics. In order to meet the door closure impact resistance and side impact resistance and other performance requirements. On the basis of referring to many kinds of door structure, a separate front door is designed.

The "Digital shape Editor" module based on CATIA software can process the measurement point cloud quickly and conveniently, and draw out the contour feature line of the part prototype. The "fast surface reconstruction" module can set up and process the feature lines on the point cloud and fit the surfaces that meet certain requirements. The "creating surface design" module can be further processed on the established contour feature lines and basic surfaces. Creates higher quality surfaces. Thus, the reverse design of the front door panel is completed.

Key words: split type; car front door panel; reverse design

2.1传统前门内板逆向设计、车身工装设计和制造的工作流程 6

2.2 基于逆向工程的车身总体设计流程 6

2.2.1逆向工程系统概述 6

2.2.2基于逆向工程的车身总体设计 7