The research to improve the data quality of CAD model in original modeling stage is very significative both on theory and on practice.
提高初始建模阶段CAD模型数据交换质量的研究具有较强的理论意义和实用价值。
Feature modeling is the key technique in the new CAD system, it is the core technique of product model.
特征造型技术是新一代CAD系统的关键技术，是产品模型技术的核心。
Furthermore, a new method that combines CAD modeling software and finite analysis software to solve the engineering questions is set forth in the article.
同时，提出了CAD造型软件与有限元分析软件相结合解决工程实际问题的方法。
A new CAD technology-hybrid modeling was stated.
论述了CAD复合建模新技术。
All the research work mentioned above is derived from practical background of reverse engineering CAD modeling and it owns strong applied value.
以上所有的研究内容都是从反求工程CAD建模的实际工程背景出发，具有很强的工程应用价值。
Based on CAD, automatic mesh generation and AI reasoning techniques, the problem solving framework for finite element modeling (FEM) of aeronautical thin wall structures is introduced.
介绍了利用CAD、网格自动剖分和人工智能技术相结合进行航空薄壁结构有限元建模的问题求解框架。
In this dissertation, networked information releasing technology was applied to part design in CAD system, brought forward a new three dimensional modeling method by networked parameter drive.
本文将网络化信息发布技术应用于CAD系统的零件设计，提出了通过网络化参数驱动建立三维模型的新方法。
So, the feature modeling technique is thought as an unique method of CAD/CAM integration.
因此，特征建模技术被认为是实现CAD/CAM集成化的唯一途径。
According to the analysis for the feature and requirement of testing fixture design, the general designing and modeling methods of testing fixture based on conventional CAD software is presented.
在分析了检具设计的特点和要求的基础上，提出了在通用CAD软件平台上进行检具设计建模的一般方法。
This paper has described the rigorous methods of both design and geometric modeling, which can be used in the CAD for heavy casting and forging as well as heavy machinery.
本文介绍了严密精确的设计和几何造型方法，可用于大型铸锻件和重型机械的CAD和计算机辅助设计。
This paper introduces the CAD techniques for the power MMIC. The main factors are the power FET large signal modeling, power MMIC design methodology and process oriented CAD.
从功率FET大信号建模、功率MMIC设计方法以及CAD同工艺因素的结合等方面论述了功率单片电路的CAD应用技术。
In collaborative design systems based on message communications, it is key issue to study the inner conflicts while communicating and maintaining CAD modeling data.
在由消息通信实现的协同设计中，认识和理解其内在的冲突，是CAD模型数据通信和维持数据一致的关键性问题。
Local B-spline surface designing strategy, a surface coincided technology, is proposed entirely originated from practical requirements in reverse engineering CAD modeling.
样条曲面的局部设计是完全根据反求工程CAD建模的实际需求而提出的一种局部区域曲面设计方案。
The feature modeling technology provides a new way for the integration of CAD/CAPP.
特征建模技术为实现CAD／CAPP集成开辟了新的道路。
After comparing several common CAD modeling methods, the cubic parameter-spline curve is used to approach and interpolate discrete contour of usual and complicated rocket jet.
通过对几种常用的CAD造型方法的比较，对常用而复杂的喷管离散点型轮廓段的拟合插值采用三次参数样条曲线来完成。
The difficulty of integration of CAD/CAPP and the disadvantage of several feature modeling were analyzed, and levels of feature model were brought forward based on the thinking of feature conversion.
分析了CAD/CAPP集成技术的难点和当前特征建模的不足，基于特征转换思想提出了分层次建立特征模型的方法。
The proposed method can be used for CAD model reconstruction of 3d objects and free smooth shape modeling.
这种方法可以用于3d物体的CAD模型重构和自由光滑曲面模拟。
The main idea of this paper is to find a way to reduce the work of development of solid modeling for FEA software by exchanging information with CAD software.
研究的具体思路为：利用专业三维CAD软件进行实体建模，然后通过与CAD软件进行信息交换来得到实体信息并进行实体重现，以找到一种替代实体建模的方法。
The technology of parametric graphic modeling has been one of the research focuses in CAD field study.
参数化图形建模技术一直是CAD领域的研究热点之一。
The local fitting method is a common method of measure and geometric modeling systems for complicated curved surface because of its mathematical model the same as that of current CAD system.
局部拟合因其具有与通用CAD系统相同的数学模型，所以它是复杂曲面测量几何造型系统的常用方法。
ABSTRACT The product analysis and CAD modeling is one of the research contents of the reverse engineering technology.
产品反求和CAD建模是逆向工程研究的重要内容之一。
The product CAD modeling and implementing technology based on the Axiomatic Design and knowledge driven are put forward.
提出了基于公理化与知识驱动的产品CAD模型建立方法及实现技术。
Such porous scaffolds can be designed by CAD modeling method, and fabricated by rap - id prototyping technology.
仿生支架可以采用CAD建模方法设计内部结构，并采用快速成形加工制备仿生支架实体。
A measuring modeling technique is presented for obtaining solid model from material product based on CAD modeling technique in reverse engineering.
在反求工程CAD建模技术的基础上，介绍了一种从实物样件获取产品实体模型的测量造型技术。
The complexity of compressor's blisk of turbine engines caused difficulties in the precise Computer Aided Design(CAD) modeling and Computer Numerical Control(CNC) machining.
整体叶轮型面的复杂性，导致造型和数控编程都有一定的难度。
All the research work mentioned above is derived from background of reverse engineering CAD modeling and it has strong applied value.
以上所有的研究内容都是从反求工程CAD建模的实际工程背景出发，具有很强的工程应用价值。
Compared with the common CAD modeling, the reverse engineering modeling based-on physical model is very different in such as design idea, routing and technology etc.
基于实物模型的反求工程造型在设计依据、设计思路、处理方法与造型技术等方面与通常的CAD造型比较，存在明显区别。
Basic theory and procedure of NC machining for free-form surface based on reverse engineering were introduced. Digital measure and CAD modeling as well as tool path generating were analyzed.
介绍了以反求工程为技术支撑的自由曲面数控加工的基本原理和全过程，并对其中的数字化扫描、CAD建模及刀具轨迹生成等关键技术作了进一步的分析。
Based on the analysis of flush toilet modeling that is one of the typical ceramic, with UG as software platform, flush toilet parametric CAD system is developed.
本文在对典型的卫生瓷产品—坐便器造型分析的基础上，以UG软件为平台开发了坐便器参数化CAD造型模块。
Based on the analysis of flush toilet modeling that is one of the typical ceramic, with UG as software platform, flush toilet parametric CAD system is developed.
本文在对典型的卫生瓷产品—坐便器造型分析的基础上，以UG软件为平台开发了坐便器参数化CAD造型模块。
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