Research on Design Principles to CAD/CAM Geometric Platform Based on STEP/AP203
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摘要: 介绍在STEP/AP203标准语义模型共享为基础的CAD/CAM系统集成中,一般几何表示的设计原理与方法.STEP标准提供了以面向对象为基础的软组件结构实现的可能,因而,扩大了CAD/CAM集成系统在面向需求变化中的开放性.文中给出了一般框架, 允许采用不同的图形包几何表达AP203语义模型.Abstract: The approaches and the design principles to the CAD/CAM geometric platform based on shared standard semantic models of STEP/AP203 in the CIMS environment are expounded in this paper. STEP gives the possibility of developing software component architecture in terms of object-oriented technology. Therefore, the more flexible and open properties can be provided by the CAD/CAM integrated system to meet requirement oriented changes. These properties are the key elements to support the future integrated manufacturing business and concurrent engineering ect.. A general purpose geometric platform frame which is independent of specific graphics systems is given in this paper. The frame is fit for different kinds of specific graphics systems. The advantage for the approaches shows that the software design of CAD/CAM is independent from specific graphics systems. Within the scope of some powerful graphics system, the CAD software can be run on these graphics systems by plugging the systems' APIs in the correspondent API (Applicatin Programme Interface) sockets.
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1 .孙家广,杨长贵.计算机图形学.北京:清华大学出版社,1995.57~80 2. International Organization for Standardization.ISO 10303—21 Clear Test Encoding of the Exchange Structure.Gaitherburg:National Institute of Standards and Technology,1992 3. International Organization for Standardization.ISO/DIS 10303—11 Product Data Representation and Exchange —Part 11: The Express Language Reference Manual.Gaitherburg:National Institute of Standards and Technology,1992 4. International Organization for Standardization.ISO/DIS 10303—203 Product Data Representation and Exchange—Part 203: Application Protocol: Configuration Controlled Design.Gaitherburg:National Institute of Standards and Technology,1993 5. International Organization for Standardization.ISO 10303—42 Integrated Resources: Geometry and Topology Representation.Gaitherburg:National Institute of Standards and Technology,1993 6. ACIS geometric modular programmers reference.Boulder,Colorado:Spatial Technology Inc,1995 7. 魏菊霞.基于STEP/AP203的CAD/CAM图形资源的研究与实现:[学位论文].北京:北京航空航天大学计算机科学与工程系,19978 魏菊霞,任爱华,邓家提.STEP/AP203工具包的研究与开发.计算机集成制造系统(CIMS),1996,2(4):45~48
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