拉深方向确定之后，对汽车覆盖件进行工艺补充。
After the drawing direction has been created, the addendum of auto-body panels will be added.
本文首先对汽车覆盖件的形状和工艺特征进行分类，建立覆盖件的工艺特征表达模型。
Firstly, the process and shape features of panels were classified, and the process representation model was presented in this paper.
本文对汽车覆盖件冲压成形有限元数值仿真技术进行了研究，并对某型轿车前翼子板进行了冲压成形仿真。
In this thesis, the finite element simulation technology of automobile panel stamping forming is researched, and an automobile front fender stamping forming is simulated.
对汽车覆盖件模具数控加工的质量分析表明，曲面造型和刀具运动轨迹的生成，是数控编程加工中的两大关键性技术。
From the quality analysis of NC machining of pressing dies of the motor vehicle covering parts, it shows that styling of the curved surface and cutter paths creating are two critical techniques.
以典型汽车覆盖件为例，对实现覆盖件冲压方向的优化系统进行了理论验证。
With a typical automotive outer panel as the example, theoretic verification for the outer panel pressing direction optimization system is carried out.
汽车覆盖件作为汽车车身的主要零件，其质量对整车的性能及外形美观至关重要，质量要求高。
As an important part of the auto-body, automobile panel, decides the automobile performance and the appearance quality, therefore enjoys high demands for its quality.
阐述了目前国内外汽车覆盖件模具CAD的现状及应用中存在的问题，并对其未来可能的发展趋势进行了分析和探讨。
The status quo and problems of application of automotive panel die CAD domestic and abroad have been expounded as well as future developing tendency of such analysed and explored.
对铸铁的离子渗氮技术进行了综合评述，讨论了大型汽车覆盖件模具服役条件、材料选择和铸铁离子渗氮工艺。
The plasma nitriding process, the service condition, the selection of material and the plasma nitriding processing of the large-scale automobile cast iron dies were reviewed and discussed.
为了快速、准确地制造汽车车身覆盖件，对大型汽车覆盖件材料的屈服极限、强化模式以及失效模式进行了分析。
To make automobile panel rapidly and accurately, the yield limit, hardening modes and invalidation modes of materials for large automobile panels were analyzed.
覆盖件拉延模设计制造周期的长短和质量对新车型的开发周期、汽车产品的质量和竞争力有着直接影响。
The design and manufacturing time and quality of panel dies have direct effect on the development period, quality and competitive capability of new car.
通过CAE的平台，对某典型汽车内覆盖加强件的冲压成形工艺方案研究，得出了一般大型板料冲压成形方案制定的方法。
A general method has been put out by discussing the stamping process of a strengthening panel based on CAE platform.
通过对某汽车前翼子板等实际覆盖件边界的光顺验证了算法的可行性。
The feasibility of techniques was proved by creating the smooth surface on the contour of practical parts.
利用作者已开发的汽车覆盖件成形预测系统，针对一汽车车门内板的成形过程进行了模拟分析，并对其在试模过程中可能出现的破裂问题进行了预测。
A forming process of the inner panel of automobile door was simulated by means of a developed prediction system. The cracking prediction of the panel during its forming process was given.
本文通过对汽车尾灯支架及其它一些覆盖件的研究找出了覆盖件有限元模型建立及模拟的基本流程和方法；
This thesis find the basis paths and methods of automobile panel simulation and finite element model building by researches of taillight supporter and other auto panels;
通过应用逻辑DFC图对产品开发的过程模型进行图示化描述，应用并行工程的活动分解方法对过程进行分解，建立了汽车覆盖件模具设计的过程模型。
Describing the process model of product development by logic DFC, planning the process by methods of concurrent engineering activity planning, the process model of auto panel die design is developed.
通过应用逻辑DFC图对产品开发的过程模型进行图示化描述，应用并行工程的活动分解方法对过程进行分解，建立了汽车覆盖件模具设计的过程模型。
Describing the process model of product development by logic DFC, planning the process by methods of concurrent engineering activity planning, the process model of auto panel die design is developed.
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