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。     

浅谈服装CAPP系统模式构建

当前阶段,解决服装设计问题主要靠CAD系统,解决服装生产的问题需要服装计算机辅助工艺设计。服装CAPP系统对优化服装工艺设计方面具有很多优势,如:提高生产能力,缩短生产周期,提高服装质量,加快服装企业信息化管理速度。本文结合本人实际工作经验,重点阐述了服装CAPP的发展历程及服装CAPP系统模式的构建。     

轴类零件CAPP典型工艺系统开发及应用

主要介绍作者开发的轴类零件CAPP典型工艺系统 .通过对CAPP系统多种形式工作原理的分析 ,总结出开发CAPP典型工艺系统的必要性 ;同时介绍了本系统的开发过程及工作原理、系统的特点和系统的应用情况 ;以及今后CAPP的发展方向 .     

工艺设计自动化理论及CAPP系统开发工具的研究——工艺设计自动化理论研究之三

本文作者通过分析传统开发CAPP系统存在的问题,阐述了研究面向CIMS环境的新一代CAPP系统必须以发展工艺设计自动化理论为前提的重要意义,强调了在工艺设计自动化中应用基元化理论的必要性和研制CAPP系统开发工具的迫切性,并讨论了基元化理论在工艺设计自动化中的应用和CAPP系统开发工具的结构模型。     

LS—CAPP—M系统的工艺决策规则的设计方法

本文通过对兰州石油化工机械加工零件计算机辅助工艺过程设计系统(LS—CAPP—M)的工艺设计方法的介绍,对单件小批生产型企业,在开发实用的CAPP系统时,如何进行工艺设计,从其总体思想、工艺设计的特点,具体的工艺路线、工序内容设计方法以及相应的工艺决策规则的制定等方面做了较详细的论述。     

工厂开发CAPP的准备工作

CAPP是把成组技术和计算机技术结合起来应用于工艺过程设计的一门技术。CAPP不仅解决了工艺过程设计的标准化和自动化(半自动化)问题,而且是工厂建立CIMS的核心技术。在国内外,该项技术正处于飞速发展的阶段,各种型式的CAPP不断涌现。国内不少工厂同大专院校、研究所、设计院相结合,取得了许多CAPP的成果,有些工厂己开始用于实际。     

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。     

面向企业生产实际的LKYMCAPP系统

本文介绍了作者在开发面向企业生产实际的CAPP系统过程中所遇到的各种问题及解决问题的方法——按企业产品的类型分别建立各系列产品的CAPP系统。 洛矿计算机辅助窑、磨类产品工艺过程设计(LKYMCAPP)系统即是针对作者所在企业的建材产品:大型水泥回转窑、球磨机、自磨机等开发的一个CAPP系统。该系统克服了以往一般CAPP系统的机助工艺覆盖率低、实用性差等缺陷,在工艺决策模块中采用专家系统中的先进知识表达方式——产生式规则,对于窑、磨类产品中的回转类零件、非回转类简单件及各种特殊专用件等均可自动进行工艺过程设计,整台品的机助工艺覆盖率高达70％以上。     

基于WEB的航空航天环形锻件CAPP系统开发

目的 设计并实现基于B/S架构模式的航空航天环形锻件CAPP系统,提升航空航天环形锻件的工艺设计效率,保证产品工艺设计的一致性,实现环形锻件工艺设计的自动化、智能化。方法 根据环形锻件工艺设计理论,结合实际生产过程中环形锻件工艺的设计要求,分析环形锻件工艺设计流程,提炼环形锻件的工艺设计规则。根据环形锻件工艺设计需求和用户需求设计环形锻件CAPP系统架构,选取C#作为系统后端开发语言,利用HTML、CSS和JavaScript技术开发系统界面。选用SQL Server开发系统数据库,配合MVC框架进行CAPP系统各功能模块的开发。结果 设计并实现了环形锻件CAPP系统,系统包含工艺编制、环件信息管理、知识库管理、用户管理4个系统功能模块。在工艺编制模块中导入新增环件信息后可以选择基于规则或基于机器学习2种设计模式进行环形锻件的工艺编制,能够自动生成标准化工艺卡片,与人工设计相比,工艺设计时间缩短了90%。结论 环形锻件CAPP系统具备良好的环形锻件工艺设计能力,能够显著提高环形锻件的工艺设计效率及一致性。     

客户化CAPP系统的研制与开发

根据我国企业的生产现状，讨论了CAPP存在的问题，提出了“以产品数据为基础，以交互式设计为手段，以工艺知识库为核心，以实现企业需求为己任，以尽善尽美为目标，以集成化、智能化、工具化、模块化、网络化和实用化为指导思想”的CAPP系统开发模式，改变了过去盲目追求高度自动化的系统开发理念，研制并开发了高度客户化的模块式CAPP系统．     

Integration and application of feature recognition and mould manufacturing planning navigating process

Plastic injection mould manufacturing is diverse and complex. Traditional mould manufacturing planning often relied on experience and techniques. Therefore, in order not to affect the operation or even cause some loss of the enterprises, geometry information of computer-aided design (CAD) should be converted into manufacturing information of computer-aided process planning (CAPP) and CAM for automatic feature recognition to shorten the lead time. This study is the secondary development in a CAD environment creating a network plastic injection mould manufacturing navigating system and CAD/CAPP for integration and application. As part design is feature-based, each processing step can be regarded as a feature. By applying the hybrid recognition technology of the graph-based approach, the rule-based approach and hint-based approach in the analysis of part feature appearances, it can automatically categorise all the manufacturing features of the part and convert them into corresponding processes. The CAPP developed in this study can convert the part manufacturing features into corresponding processes and plan the part process sequence according to the process priority constraint relations. As proved by the case studies, the use of CAPP in this study can reduce planning time by 87%. It can provide users with a reference regarding process sequence, and speed up the part planning progress. Coupled with the mould manufacturing navigating process, it can achieve automatic design and manufacturing.     

A modular architecture for rapid development of CAPP systems for agile manufacturing

Current manufacturing planning software systems, such as computer aided process planning (CAPP) systems, are general and in a closed form. It is very difficult to modify these systems to respond to a user's dynamically changing needs. These systems are no longer suitable for agile manufacturing. This paper presents research aimed at developing a novel architecture for the rapid development of CAPP systems. The architecture supports the construction of CAPP systems from prepackaged, plug-compatible software components. Specifications of the architecture and its building blocks are defined. Several important issues in architecture implementation are discussed, and an experimental system is illustrated. Finally, an Internet-based distributed CAPP system architecture is presented as a preview of next generation CAPP system development.     

水蒸汽喷射式真空泵CAD/CAPP集成系统的开发

介绍了水蒸汽喷射式真空泵CAD/CAPP集成系统总体结构,论述了尺寸设计CAD模块、CAPP模块和数据管理模块的主要功能,实现了从设计到制造工艺的全过程自动化.     

OPPS-PRI 2.0: an open and optimized process planning system for prismatic parts to improve the performance of SMEs in the machining industry

The needs of customers are now highly specific and continually changing, although they still want to have high-quality and low-cost products. Companies must respond rapidly to the demands of customers and improve their productivity. They must also provide a suitable product variety in order to survive and be competitive in the market. They attempt to find strong and flexible solutions to this problem. One of the keys for improving productivity and responsiveness is computer-aided process planning (CAPP). The automatic generation or preparation of effective and optimal process plans within a short period of time is vitally important in manufacturing, since small- and medium-sized enterprises (SMEs) have recently become a central part of the manufacturing industry of developing countries. The use of new technology and CNC machine tools has dramatically increased in developing countries, while complete CAD/CAM integration through CAPP is still not seen as ‘realizable’. The productivity and responsiveness of SMEs are the two fundamental issues to be improved to provide qualitative success as well as quantitative success and competitiveness. CAPP is the key technology for the increased productivity and responsiveness in SMEs, which are very sensitive to the diffusion of process planning know-how. SMEs have started to believe that it is necessary to use CAPP systems to improve the productivity of their CNC machine tools and systems. Therefore, the main objective of this research is to focus on the development of an open process planning system that can produce optimal process plans and machining codes for SMEs in the machining industry. The present paper introduces the updated version of a process planning system called OPPS-PRI 2.0 (Optimised Process Planning System for PRIsmatic parts) which was developed for SMEs.     

关于CAPP的实践与思考

制造底层信息化是制造业信息化的薄弱环节，计算机辅助工艺规划（CAPP）不仅是制造底层信息化的重要研究领域之一，也是联系底层信息化与上层信息化的桥梁。工艺设计具有范围广、内容多以及个性化强等特点，因此难以实现通用化及商品化；而工艺设计是许多制造活动的交汇点，是与其他信息系统集成困难的主要原因之一。文章介绍了在CAPP方面的研究特色，包括应用框架技术实现开放式CAPP平台，通过BOM转换实现集成化，以及通过解决行业问题加强CAPP的推广实施等；指出了定量化CAPP、基于3D模型的CAPP能主车间级CAPP将是CAPP的重要发展方向。     

箱体零件CAD／CAPP／CAM集成系统的研究与实践

在ＣＩＭＳ环境下，针对箱体零件ＣＡＤ、ＣＡＰＰ、ＣＡＭ信息集成的功能需求，在基于特征的箱体零件信息模型、工艺计划模型与服务于工艺设计的制造环境模型的支持下，开发出了特征造型，工艺设计及加工过程仿真与ＮＣ编程等子系统，从而完成了一个集成化的箱体零件ＣＡＤ／ＣＡＰＰ／ＣＡＭ系统。     

Automated extraction of dimensional inspection features from part computer-aided design models

Metrological inspection planning is among the least explored computer-aided process planning (CAPP) domains. This paper examines the basic issues involved in automated dimensional inspection planning that works within an environment of a generic CAPP support system. A new algorithmic approach based on multi-attributed spatial graphs is developed for extracting inspection features. The features of specific interest to the planner are selected by applying a sequential filtering method. The method is capable of extracting many common types of inspection features (polyhedral, cylindrical and free-form) found in industrial practice.     

并行工程在CAD／CAM中的应用

在CIMS中应用并行工程，可以加快新产品开发速度，本文主要介绍CAD／CAPP并行工程系统和实现它的关键技术。     

A CAPP framework with optimized process parameters for rotational components

Process planning, as a critical stage integrating the design and manufacturing phase in a manufacturing environment, has been automated to meet the needs for higher productivity and lower production cost. Being an input to various systems such as scheduling and routing, process planning results are of great importance in the manufacturing stage. Though feature extraction and sequence optimization have been given much attention, the process parameters are rarely dealt with. This paper focuses on the development of a new generative computer aided process planning (CAPP) framework for rotational components. The developed framework includes modules for feature extraction based on CAD application programming interfaces, determination of the optimum sequence and generation of optimum process parameters. The optimization of the machining operations is achieved using the evolutionary technique. The approach resulted in the reduction and prediction of machining time and cost. The framework is demonstrated with a case study.