It is significative to import uml to the developing of special mechanical cad system and to research the application of uml in special mechanical cad system . it will quick the developing of object - oriented cad system , accelerate the application of object - oriented method in engineering software , promote the expansion and maintenance of software 将uml引入专用机械cad系统开发，研究uml在专用机械cad中的应用，对于加快面向对象cad系统发展，促进面向对象方法在工程软件中的应用，提高软件可维护性和可扩充性等具有重要意义。
The third chapter expounds the software development theory and realization method based on component , analyzes the pivotal technique that the cad system development based on component , and discusses the effect of the component - bank management system . in the thesis the innovation significance depends on the component software parameterization that the mechanical cad system has been realized 第三章详细地阐述了基于组件的软件开发理论和实现方法，分析研究了基于组件的cad系统开发的关键技术，讨论了组件库管理系统的作用，创新意义在于实现了机械产品cad系统的组件软件参数化，明确指出这是机械cad软件中的基本问题。
The principle and theory of concurrent design is detailedly discussed , the model method is built . and it puts forward a kind of the implementation course and the system structure suiting the mechanical cad that the system is concurrently developed on the foundation existing to concurrent design and the model study at present 详细地讨论了并行设计的原理、理论与建模方法，在对目前已有的并行设计模型进行研究的基础上，提出了一种适合于机械cad系统并行开发的实施方法，为建立组件的并行开发体系结构奠定了基础。
Based on special - purpose robot for hydraulic turbine repair , aimed at extremely complicated configuration of the robot , using pro / engineer software who acts for new standard in the mechanical cad field at present , the paper establishes configuration model of the robot and accurately creates all components and assemblies of the robot 本文基于水轮机修复专用机器人，针对其本体结构极其复杂的特点，利用代表目前机械cad领域新标准的参数化设计软件pro / engineer来建立机器人本体结构模型，基于pro / e软件对机器人本体结构的主要零部件进行准确的创建。
