面向用户的综合式CAPP系统

开发了一种综合式计算机辅助工艺规程设计系统（SI－CAPP2000），系统以企业对CAPP实际需求为出发点，将人机交互式、典型工艺式、智能式工艺规程设计有机地结合起来，由用户根据实际情况自主选择零件，系统还首次将工艺文件数据管理作为系统重要组成部分，使系统集设计与管理于一身，从而满足企业对CAPP新需求。     

结构件CAPP系统的开发研究

根据结构件CAPP研究的现状，分析了结构件CAPP的特点，介绍了CAPP系统开发模式、总体结构，探讨了结构件CAPP系统开发中涉及到的若干关键技术及解决方案。     

一种CAPP变异式生成工具

一、前言随着计算机水平不断提高,计算机在机械加工领域得到了广泛的应用。企业应用CAD、CAPP、CAM已成为提高产品设计制造效率的主要手段之一。由于CAPP系统的特殊性,CAPP在开发、应用中仍存在诸多问题:(1)CAPP系统开发周期长。(2)CAPP应用范围狭窄,企业设计CAPP系统一般都依据本企业产品特点、加工习惯、设备限制等因素,因此企业设计的CAPP系统移植到其它企业中可能根本不能使用。     

适用于CAPP源程序的高级语言TRUE BASIC的介绍

近年来,越来越多的工厂企业对计算机辅助工艺(即CAPP)产生了很大的兴趣。许多工厂已经开始这方面的工作,但是结合我国现状,采用一种什么微机系统软件来开发CAPP呢?这对CAPP系统的功能、结构和维护,对开发人员的水平要求以及所需的资金都是很重要的。作者根据在工厂从事成组技术和使用TRUE—BASIC高级语言编写CAPP源程序的一些经验,向欲从事开发CAPP的工艺人员简单介绍用TRUE—BASIC开发CAPP的优点。从资料上介绍,我们知道发达国家开发的CAPP系统之中,多半都是在大中型计算机上使用高级语言完成的,其中以FORTRAN语言为多。而在我国绝大多数的厂矿企     

必须重视CAPP系统的实用性

自80年代初以来,我国有关CAPP的科学研究和开发工作越来越活跃了。近年来大学,工厂、院、所相继开发了不少CAPP系统,一大批CAPP的优秀论文已在有关杂志上刊登或在有关学术会议上交流,CAPP软件系统的功能正在逐步完善,其中不少CAPP系统已经通过部、省市级组织的评定或鉴定,有的已进入实用阶段。说明开发CAPP系统的重要意义已被人们所认识,各项CAPP技术从研究到应用已受到国内成组技术学术界的高度重视,CAPP的理论和应用水平已有很大的提高。总之,我国在CAPP领域中已取得了令人可喜的成果。 但是,调查已研制出的CAPP系统中,真正能够或者已经在企业中实际应用的还是为数不多,     

浅述CAPP系统中工艺规程的建立

近年来计算机辅助工艺规程设计在机械行业引起了广泛的兴趣,各种形式的CAPP系统相继出现,并在继续发展和完善,但CAPP系统的开发工作时间长,过程复杂。本文浅述了CAPP受重视的原因,CAPP系统与工艺规程的关系以及派生式CAPP系统工艺规程的建立方法。供从事CAPP系统开发的人员参考,以提高工作效率,缩短系统开发时间。     

面向产品综合式CAPP系统的开发研究

根据现代企业对CAPP系统的要求 ,开发了一种“杭汽轮叶片工艺计算机辅助规程设计系统”(以下简称HTC -YPCAPP) ,通过分析整个产品零件的工艺设计过程 ,介绍了该系统的开发思路和设计要点 ,提出开发CAPP的一种理念———“面向产品的综合式CAPP系统”     

武工GT-CAD系统的结构及其特点

武工GT-CAD系统是武汉工学院结合某企业轴类零件开发的软件。本文着重介绍了该系统的研究方法、系统的结构及其主要功能特点。该系统以成组技术(GT)为基础,建立了CAD数据库和相似零件库;以Auto CAD系统为底层功能进行特征参数造型,系统输出的CAD特征模型数据和文件,可直接为后续CAPP系统利用,它是CAD/CAPP/CAM集成系统的重要组成部分。     

中小企业CAPP工具系统的研究与开发

针对中小企业的生产类型,分析了中小企业CAPP系统应具备的特点,并在此基础上,开发了一个基于特征和资源定制的CAPP系统,该系统集工艺设计和工艺管理于一体,从而较好地满足企业对CAPP的需求.     

基于派生式并具有自学习能力的CAPP原型系统研究

分析了派生式CAPP系统存在的局限性以及开发完全创成式CAPP系统尚待解决的问题,将基于实例推理的CAPP原理与传统派生式CAPP相结合,提出了一种新型的、具有自学习能力的混合型CAPP原型系统.这一系统继承了派生式CAPP的优点,同时克服了派生式CAPP系统的一些局限性,例如适应性和通用性差,即当制造资源发生变化时,原有的CAPP系统不再适用,这就导致现有的CAPP系统没有通用性.详细论述了基于派生式并具有自学习能力的CAPP原型系统的工作模式和原理,为开发具有通用性和实用性的CAPP软件提供原型和理论基础.     

人工神经网络技术与智能化CAPP

人工神经网络技术在目前得到了高度的重视和迅猛的发展，研究此技术在智能化ＣＡＰＰ中的应用是一项很朋意义的工作，本文介绍了人工神经网络的研究内容、主要应用领域及构成原理；分析了在智能化ＣＡＰＰ中应用人工神经网络技术的必要性；讨论了符号逻辑方法ＣＡＰＰ与人工神经网络ＣＡＰＰ的区别；提出了采用多种技术相结合构造智能化ＣＡＰＰ的思想；文中还分析了应用人工神经网络技术开发智能化ＣＡＰＰ的研究现状。     

基于多自治体的服装集成制造系统

提出了一种基于多自治体智能节点的,构成信息化服装集成制造系统的新方法,这种方法采用Servlet技术,采用请求——响应的Web服务模式来进行网络数据库的访问,将服装制造过程各单元,诸如服装CAD系统、计算机控制的自动裁床、智能吊挂生产系统等自动孤岛集成起来,构成一个分布式多自治体的服装制造系统．本文还具体阐述了制造系统中多自治体的基本结构和多自治体之间的组织方式．这种技术的应用可以实现了服装设计、裁剪、缝制及其余管理各个子系统达到真正的无缝集成．     

基于PDM和组件技术的CAPP系统研究

组件技术的应用可提高软件系统的可重构性和柔性,便于系统维护和二次开发,同时,产品数据管理系统(PDM)作为平台可以支持快速地构建出像CAPP这样的应用系统.本文研究了基于组件技术的CAPP系统的设计思想,讨论了基于PDM系统和组件技术的CAPP系统的组件划分模型、体系结构和接口模型,并给出了基于PDM系统TeamCenter的组件化CAPP系统的构建实例.     

A generative process planning system for parts produced by rapid prototyping

This paper presents a generative process planning system for parts produced by the rapid prototyping process (i.e. fused deposition modelling–FDM). The proposed process planning involves optimal selection of orientating the model with a proper support structure and then provides an intelligent slicing methodology, such as direct or adaptive, to minimise the built up time, keeping the geometry and cusp height errors in control. Pre- and post-slicing processes have been used to minimise the sliced data error. The Computer Aided Process Planning (CAPP) model has been arranged into five modules: orientation, support structure generation, slicing, path planning and Numerical Control (NC) program generation, and model build up. The CAPP model has been implemented in C language having a unique methodology consisting of 42 simplified steps. The CAPP model has been tested for several examples and shows satisfactory results.     

Automated process planning for parametric parts

The available automated CAPP solutions are mostly academic research or specific applications, which cannot be used in different environments. This paper presents a solution for automated process planning for parametric parts included in one CAPP environment with many other software components. It meets the planning requirements of any parts and products in a real industrial environment. This paper provides a brief overview of CAPP and a definition of the parametric parts used. The requirements of the CAPP environment are discussed and its concept and design characteristics are presented. A practical application of the CAPP environment is described in order to validate the proposed solution.     

General information model for representing machining features in CAPP systems

Today, the generality of computer-aided process planning (CAPP) systems and their standardization do not achieve satisfactory standards levels for industry. One of the major causes here is the difficulty of integration with computer-aided design applications, due mainly to the product model used. It is therefore necessary to identify models that are general with regard to the products, but at the same time suitable for CAPP. A product model suitable for CAPP must represent the product conceptually, enabling the development of process planning functions that operate with manufacturing concepts. It is therefore necessary to develop product information models using this philosophy. The present paper focuses on this problem and proposes an information system for representing the product for internal CAPP use. It is geared towards representing all of the part information (necessary for manufacturing) integrally with the machining features and under the same concept as these features. To this end, one of the main characteristics of the model is the absence of conventional geometric entities. The application domain of the model proposed is the assignment of processes and machines in machined parts. The GF-CAPP system has revealed that the advantages of using this type of product model in CAPP are its generality with regard to the product and the ease of developing functional procedures that are general, simple and independent.     

AI-Based Process Planning for Electronic Assembly

Diversity of electronic products, lack of human expertise, and inconsistency among manually generated process plans increase the necessity of developing Computer Aided Process Planning (CAPP) systems for electronic assembly. Artificial Intelligence (AI) offers a few techniques to develop CAPP systems which would behave in a 'knowledgeable' manner. Two rule-based CAPP systems, a backward-chaining system developed in M. 1 shell and a forward-chaining system developed in OPS 5, and an object-oriented system developed in Objective-C are discussed. The CAPP systems generate processes and select a set of machines to perform the generated processes for a given product. In the rule-based CAPP systems, product characteristics and bill of components are stored in working memory and capabilities of the available machines are stored as rules. In the object-oriented CAPP system, product as well as the available machines are represented as objects. A central decision module which does pattern matching and sends messages to appropriate machines (objects) is developed     

面向CAD/CAPP集成的零件信息描述方法的研究

零件信息的描述及其数据的处理是实现CAD/CAPP集成的关键.文中论述基于特征的零件信息描述方法,对于回转体零件以形体特征描述为主导,对于箱体零件以基于零件典型实例的特征形面描述为依据,从而为实现CAD与CAPP的顺利集成奠定基础.在分析基于实例和特征的零件信息描述方法的基础上,结合具体的应用系统阐明该方法的应用过程.