一个基于知识的二维模具CAPP／CAM系统MEKCAM

ＣＡＤ／ＣＡＰＰ／ＣＡＭ系统的一体化是计算机智能制造管理系统和计算机集成制造系统等的核心部分和重要研究课题，本文论述一个基于知识的柔性电路板模具ＣＡＰＰ／ＣＡＭ系统－ＭＥＫＣＡＭ。首先讨论ＭＥＫＣＡＭ的结构及功能，然后介绍该系统所使用的有关知识和算法，最后，我们给出ＭＥＫＣＡＭ的实现方法及系统评价。     

CAD／CAPP／CAM系统中的产品数据管理开发策略

产品数据管理是集成化ＣＡＤ／ＣＡＰＰ／ＣＡＭ系统的关键，首先介绍一个基于ＳＴＥＰ标准的ＣＡＤ／ＣＡＰＰ／ＣＡＭ系统的开发情况，然后介绍其中数据管理软件的开发策略，系统结构与特点及在集成系统中应用的一些问题，最后给出一个应用实例。     

机械CAD软件精品XTMCAD

机械ＣＡＤ软件精品ＸＴＭＣＡＤ公司产品ＸＴＭＣＡＤ特征化参数化集成机械ＣＡＤ／ＣＡＰＰ／ＣＡＭ系统板金ＣＡＤ／ＣＡＰＰ／ＣＡＭ系统模具ＣＡＤ／ＣＡＭ冷冲模ＣＡＤ／ＣＡＭ数控冲床、铣床、线切割图形自动编程系统图纸光栅、矢量混合编辑及矢量化系统工程图纸光...     

面向应用协议的CAD／CAM集成模式

本文提出以ＳＴＥＰ为核心，直接支持ＣＡＤ后续各应用系统的特征造型方法和ＣＡＤ／ＣＡＭ集成模式，不仅在一般意义上实现基于ＳＴＥＰ的信息集成，而且是对于ＳＴＥＰ利用应用协议实现ＣＡＤ／ＣＡＰＰ／ＣＡＭ信息集成方法的拓展。     

CIM环境下的CAD／CAPP／CAM

ＣＡＤ／ＣＡＰＰ／ＣＡＭ是计算机集成制造系统中的关键环节，集中体现了物质流和信息流的集成。本文首先讨论了ＣＡＤ／ＣＡＰＰ／ＣＡＭ系统开发的几种类型然后对三个子系统进行功能分析，最后着重介绍了上前开发ＣＡＤ／ＣＡＰＰ／ＣＡＭ系统的重点技术，即并行工程哲理的运用和实现信息集成和共享的产品模型数据交换标准。     

CIM环境下的CAD／GAPP／GAM技术

ＣＡＤ／ＣＡＰＰ／ＧＡＭ是计算机集成制造系统中的关键环节，集中体现了物质流和信息流的集成。本文首先讨论ＣＡＤ／ＣＡＰＰ／ＣＡＭ系统开发的几种类型，然后对三个子系统进行功能分析，最后着重介绍了目前开发ＣＡＤ／ＣＡＰＰ／ＣＡＭ系统的重点技术，即并行工程哲理的运用和实现信息集成和共享的产品模型数据交换标准。     

STEP信息集成软件工具的设计和实现

ＳＴＥＰ是国际标准化组织ＩＳＯ正在组织开发的应用于计算机集成制造系统（ＣＩＭＳ）信息集成的产品数据表达与交换标准，ＳＴＥＰ不仅是一种规范，更是一种信息集成技术，本文以ＣＡＤ／ＣＡＰＰ／ＣＡＭ系统集成为背景，提出了ＳＴＥＰ信息集成支持工具ＥｘＴｒａ的设计和实现技术，该软件工具已成功且有效地应用于ＣＡＤ／ＣＡＰＰ／ＣＡＭ系统集成中。     

OLE Automation技术在CAD/CAPP集成中的应用

ＣＡＤ、ＣＡＰＰ系统之间的数据通信与共享及ＣＡＤ／ＣＡＰＰ集成环境与界面是设计ＣＡＰＰ软件的两项关键技术。采用了ＯＬＥ Ａｕｔｏｎａｔｉｏｎ技术来实现ＣＡＤ／ＣＡＰＰ之间的通信与共享。并通过ＯＬＥ Ａｕｔｏｍａｔｉｏｎ技术在Ｄｅｌｐｈｉ环境下开发一个既可以充分利用数据管理系统的优点,又可以实现图形与属性集成化的ＣＡＰＰ软件。     

管材弯曲柔性加工单元自动编程系统

本文比较系统地介绍了为管材弯曲柔性加工单元开发的集ＣＡＤ、ＣＡＰＰ、ＮＣ编程与过程模拟于一体的自动编程系统，实现ＣＡＤ／ＣＡＭ一体化。     

基于STEP的CAD/CAPP集成工具的研究

长期以来,ＣＡＤ／ＣＡＰＰ信息集成一直是ＣＩＭＳ系统的难点之一,且没有得到较好的解决。ＳＴＥＰ标准的发展和应用,使其成为ＣＡＤ／ＣＡＰＰ／ＣＡＭ系统信息集成的基础。随着越来越多的ＣＡＤ系统支持ＳＴＥＰ标准,开发基于ＳＴＥＰ的ＣＡＤ／ＣＡＰＰ集成工具成为当务之急。     

以OOEDB为核心的集成化CAD/CAPP/CAM 系统GS-ICCC的设计与实现

ＧＳ－ＩＣＣＣ是一个以自行研制开发的面向对象工程数据库管理系统ＯＳＣＡＲ为核心的集成化ＣＡＤ／ＣＡＰＰ／ＣＡＭ系统，它的主要特点是按照ＳＴＥＰ标准在全局产品数据模型基础上实现ＣＡＤ，ＣＡＰＰ，ＣＡＭ的信息集成，本文围绕着这一原则介绍了ＧＳ－ＩＣＣＣ的系统总体结构，ＯＳＣＡＲ功能组织，全局产品数据建模框架以系统集成的设计与实现。     

基于CAPP平台下的3C集成技术

介绍了CAPP平台下的3C集成技术的概念,分析了国内外CAD/CAPP/CAM应用现状,阐述了CAD/CAPP/CAM集成技术的技术原理,强调了CAPP平台下的3C集成技术与其他3C集成技术的区别,展望了该技术在科研、生产中的应用前景。     

基于STEP的CAD/CAPP/CAM集成系统的研究

CAD／CAM／CAPP系统集成的关键是CAD、CAM、CA：PP系统间数据的交换和共享。STEP作为新一代的产品数据交换标准,正在被越来越多的CIMS系统所青睐。文章介绍了基于STEP的两种主要的集成方式：基于中性文件的集成方式和基于共享数据库的集成方式,最后分析了系统集成技术的发展趋势。     

CATC — A Computer Aided Tolerance Control system

Computer utilization in manufacturing systems is increasing at a rapid rate. Developments thus far have been disjointed. Much work needs to be done in the area of integrating computer aided design and computer aided manufacturing (CAD/CAM). Tolerance control is an important component in the integration of CAD and CAM. Selection of design tolerances affects the build-ability of a product. The selection of manufacturing processes and sequence of processes affects process tolerance stacking. Unexamined process tolerance stacking leads to scrap and rework. A computer aided tolerance control (CATC) system is presented in this paper. This system is based on the tolerance chart technique. The CATC system is interactive and uses computer graphics for information display. The system can be used for computer aided process planning (CAPP) and for CAD/CAM integration.     

An integrated CAPP/CAM system for stamping die pattern machining

Since the early 1980s, CAPP has been expected to bridge the gap between CAD and CAM. Though numerous research works on CAPP have been reported, it is not easy to find a commercial CAPP system applicable to complicated objects with freeform shapes such as mold and die. The dependency on CAM system is holding one leg of CAPP, while the complexity of the solution space in freeform shape machining has a tight grip on the other. This paper exemplifies that these obstacles on the CAPP bridge can be overcome by the integration with CAM and by focusing on a specific application area. Major components of a staming die for the car body panel are manufactured by machining the raw stock castings, which are usually made by the lost foam casting process. Die pattern is the lost foam pattern made of Styrofoam for the raw stock casting. The industry trend is to build die patterns by CNC machining. In this paper, a highly specialized CAPP/CAM integrated system, called Generative Pattern Machining (GPM), for automatic tool paths generation to cut die pattern from the CAD model of the stamping die is described. The overall structure and the detailed steps of GPM are explained. GPM is being used by DaimlerChrysler pattern shop very successfully.     

An integrated intelligent machining system for axisymmetric parts using PC-based CAD and CAM software packages

Machining process planning involves the formation of a set of directions describing the machining operations required to transform raw stock into a finished part. Conventional process planning, performed manually, relies on the knowledge and competence of an experienced process planner and tends to be time consuming and error prone. In the past two decades, much effort has been spent on improving process planning by utilizing the power of a computer to emulate the capabilities of an experienced planner. During the same period, computer-aided design (CAD) and computer-aided manufacturing (CAM) software has been developed to enhance design productivity and to assist the NC code generation facets of the machining process. The entire planning process may be automated be integrating CAD and CAM using computer-aided process planing (CAPP). The research described in this paper outlines the design and development of an intelligent CAPP system integrating two commercial CAD and CAM software packages, Autocad and Mastercam.     

基于UG的五轴数控机床加工仿真

目前多数五轴数控机床仿真系统，一般只提供二维的动画仿真，而且仿真系统的几何造型功能十分有限，零件和机床模型需要在其他CAD软件中进行建模，然后导人数控仿真系统。由于文件格式的转化，零件的CAD模型将会产生误差，降低了仿真精度。该文利用UGCAD／CAM软件造型功能建立五轴数控机床和零件模型，读取数控代码对机床各部件进行三维运动仿真，并对加工过程中机床运动部件之间的干涉及工件过切进行检查，建立干涉实体，为刀具轨迹的修改提供依据，同时免除了文件格式的转化产生的误差。     

一个基于NOVELL网的实时监控平台的设计与实现

通过对ＤＯＳ的多任务环境和网络实时点一点通讯的研究，作者提出并实现了基于ＮＯＶＥＬＬ网的网络实时监控平台，该平台可以方便地由一台工作站实时监控其它工作站，与其它此类系统相比，该系统具有速度快，功能强，使用方便，功能便于扩充等优点，本文就共实现技术作了详细介绍。     

并行工程在汽车车身开发与制造上的应用

本文分析了常规车身ＣＡＤ／ＣＡＭ技术所存在的弊病,提出了采用并行工程的原理进行车身开发及车身工装设计与制造的方法。重点介绍了实施车身并行工程要解决的关键性技术,诸如建立集成化的产品数据模型、ＣＡＤ／ＣＡＰＰ／ＣＡＭ集成技术、建立多功能小组、计算机技术支持等。