基于SolidWorks机加工工艺规程的工序图自动生成的研究

工序图的自动生成是CAPP系统实用化、标准化的关键技术,分析了工序图自动生成的基础及零件属性生成的现状,详细介绍了基于SolidWorks对零件进行三维建模,应用程序语言Visual Basic 6.0实现参数化设计,并在此基础上应用配置功能实现了零件工序图的自动生成的方法。     

汽车回转类零件CAPP系统的研究

介绍大批量生产环境下的汽车回转类零件CAPP RPCAP系统的结构、功能及特点 ,重点讨论零件信息输入、工艺规程生成等关键技术问题。该系统可实现工序内容和工序图的自动生成     

基于CAD/CAPP集成环境的工序图自动生成技术研究

基于三维特征建模技术,研究了零件工序模型和工序图的自动生成技术,采用扩展实体、特征回退、配置管理技术,运用加工工艺信息,采用逆向重构法生成零件工序模型和工序图。基于Solidworks平台,自动生成了轴套类零件按照加工逆序排列的工序模型和2D工序图,对缩短产品工艺设计周期,提高CAD/CAPP集成系统的实用性具有重要意义。     

CAD/CAPP集成环境下叶片泵类零件工序图的自动生成

介绍了一种以CAD/CAPP集成环境下基于三维叶片泵类零件模型的工序图自动生成技术.该技术利用基于特征的理论,采用逆向重构法生成各道工序图.主要论述了叶片泵类零件工序图自动生成技术的设计思想、原理及方法,并给出实例,为解决叶片泵类零件工序图的自动生成提供了一条新的途径.     

CAD/CAPP环境下基于三维模型的工序图逆向生成

介绍了一种CAD/CAPP集成环境下基于三维模型的工序图自动生成系统。该系统充分利用已有的信息,采用逆 向动态生成法生成各道工序图。分析了系统的信息流向及信息需求,讨论了自动生成过程中遇到的难点,利用三维图形 处理技术和参数修改法解决零件模型的动态修改和自动生成。为解决工序图的自动生成提供了一条新的途径。     

轴类零件工序图自动生成的逆向工程

主要介绍了根据CAPP系统中基于图形的理论,利用逆向工程的设计思想,处理轴类零件工序图自动生成的一种设计方法。     

面向拨叉类零件的CAPP系统的构建

介绍面向拨叉类零件CAPP系统的构建过程,讨论了系统规划中的关键技术问题,从零件信息处理方法、工艺决策原理、工序图的生成和工程数据库开发方面叙述了该系统的工作原理和特色。     

三维零件的半智能化工序图生成系统

介绍了一种三维零件的半智能化工序图生成方法。通过采用中介信息元作为形位公差、表面粗糙度、加工基准及定位基准等非几何信息描述的载体，实现CAD与CAPP系统之间的信息共享；以零件的设计尺寸为起点，以CAPP系统中推理的零件加工工序表作为指导，通过逆向推理的方法获得中间各道工序的零件尺寸及相应中介信息元的信息；利用SolidWorks二次开发，实现根据三维几何模型生成二维图形及尺寸和公差的标注。最后给出系统的整体流程图。     

面向多种零件的CAPP系统的规划

本文介绍了一个面向多种机加工零件的CAPP系统,讨论了系统规划中的关键技术问题,从信息处理方法、工艺决策原理、工序图的生成和工程数据库开发方面叙述了该系统的工作原理和特色.     

派生式CAPP系统工序图的生成方法研究

在CAPP系统研究与开发中,工序简图绘制模式是重要内容之一,通过对工序图的特点及常用生成方法分析,提出了一种基于OLE技术的派生式CAPP系统工序图的生成机理,并给出工作实例。     

基于SolidWorks二次开发的工序图自动生成方法研究

以底孔扫描规为例,以三维软件SolidWorks为平台,采用面向制造设计技术,通过二次开发技术,配合软件自身的配置功能的方法,对工序图的自动生成进行研究,实现工序图的自动生成。该方法既能应用于现实生产实践,又能实现工序图的参数化,有助于三维CAPP技术中工序图自动生成的深入研究。     

以工序为特征的曲轴CAD/CAPP系统的研究和开发

在分析曲轴加工工艺特点的基础上,提出以加工工序作为特征,以VB、ACCESS、AutoCAD作为工具进行曲轴的CAD/CAPP系统的研究和实用系统开发,实现曲轴零件图形的快速绘制和加工工序的自动生成及工艺信息的管理,提高工作效率。     

基于工序特征的曲轴CAD／CAPP系统的研究与开发

在分析曲轴加工工艺特点的基础上,提出以加工工序作为特征,以VB、ACCESS、AutoCAD作为工具进行曲轴的CAD/CAPP系统的研究和实用系统开发,实现曲轴零件图形的快速绘制和加工工序的自动生成及工艺信息的管理,提高工作效率.     

CAPP中轴类零件工序图自动生成技术研究

工序图是工艺设计结果的图形表达形式,其绘制的自动化程度低,是CAPP技术进步的主要瓶颈之一。针对运用AutoLISP二次开发工具以及数据库技术实现工序图自动绘制过程中,计算机对各个图元的自动识别、编辑和操作的要求,提出了一种轴类零件工序图自动生成的新方法,在参数化绘制预处理零件图的过程中,通过给各个图元重新命名完成了零件几何特征信息的存储,并将零件加工工艺信息代码化,采用逆序修改特征的方法实现了轴类零件工序图生成的自动化。研究结果表明,由计算机生成的一套工序图可以准确地反映出零件在从毛坯到成品的制造过程中,零件的形状和尺寸变化情况以及加工工序中的各个工艺要素,对其他类型零件的工序图自动生成也具有一定的参考价值。     

Algorithms for computer-aided generative process planning

Process planning is the function within a manufacturing facility that establishes the machining processes and parameters to be used so as to convert a piece-part from its initial form to the final form predetermined on an engineering drawing. Computer-aided process planning (CAPP) has become a major focus of manufacturing automation as it forms the interface between computer-aided design (CAD) and computer-aided manufacturing (CAM). Issues in CAPP include part representation, process selection, alternative process-plan generation, intermediate surface and tolerance determination, and operation sequencing. This paper focuses on quantitative models for determining cutting dimensions and tolerances for intermediate surfaces, and on a heuristic for sequencing cutting operations.     

CAD与CAPP之间信息共享的实现方法

实现CAPP与CAD之间的信息共享、无缝连接，一直是CAPP系统开发过程中的一个难点。这里对该问题进行了研究与探索，并介绍了一种关于怎样获取CAD图纸界面上零件总体信息及将CAPP系统处理后的数据库信息写到CAD图纸界面上的方法。     

组件结构的可集成CAPP系统的开发

为了适应CAPP的可集成性要求，采用COM组件技术和．NET技术实现C／S与B／S形式混合的CAPP系统，该系统实现了在XML基础上的与PDM、ERP系统的无缝集成。同时，该系统在COM组件封装的基础上包含了传统的CAPP系统的工艺查询、工艺派生、工艺管理、工艺简图设计等功能。以该系统在某企业的应用为例，说明了系统与PDM、ERP的集成和实际应用状况。     

Computer-aided process planning for NC tool path generation of complex shoe molds

This paper presents a computer aided process planning (CAPP) system for numerical control tool path generation of complex shoe molds. This CAPP system includes both the automation of auxiliary boundary curve generation and machining strategies. The automation of auxiliary boundary curve generation and machining strategies make tool path generation more accurately and efficiently. Traditional shoe mold making is a very tedious process. Even with the utilization of computer-aided design and computer-aided manufacturing (CAD/CAM), the CAM process requires long hours of tool path programming and debugging. It would also take a long time to calculate (sometimes several hours) the tool path for complex athletic footwear. In order to reduce the tool path editing and programming time, this paper proposes the use of CAPP to reduce processing time and increase efficiency. It is difficult, if not impossible, to develop a generic CAPP system that can generate a process plan to solve general production problems. However, it is quite possible to capture the domain knowledge of a certain production process and embed that knowledge into a CAPP system. We prove, by using such a system, that a very complicated process planning problem can be overcome by a knowledge-based CAPP approach. With such an approach, the traditional manufacturing process of shoe molds can be converted to an automatic manufacturing process with the CAPP system. In fact, shoe molds for real production have been created using the developed CAPP system, demonstrating the effectiveness of this approach. In this paper, we show that several complex and different shoe molds and their machining strategies were automatically planned by the proposed CAPP system. The result of a comparison between the CAPP system with the traditional approach is presented and discussed.     

基于VC＋＋的轧辊制造工艺CAPP系统开发

以制造轧辊的生产工艺为研究对象,利用计算机辅助工艺规程设计技术,实现自动编制制造轧辊的生产工艺.选用VC＋＋6.0软件开发工具,对轧辊的生产工艺过程进行编制,使其自动生成毛坯图、机械工艺卡片、工艺设计说明书,实现对制造轧辊的计算机辅助工艺过程设计,形成轧辊制造CAPP系统.     

A Surface Area Calculation and CAPP System for Non-Axisymmetric Deep Drawing Products

In this paper a surface area calculation for non-axisymmetric deep drawing products of elliptical shape was constructed for the design of blank shapes of deep drawing products by using an AutoLISP function in AutoCAD software. A computer-aided process planning (CAPP) system for rotationally symmetric deep drawing products has been developed. In this study, a CAPP system for non-axisymmetric deep drawing products of elliptical shape was constructed using process sequence design. The system developed consists of four modules. The first is the recognition of shape module for recognising non-axisymmetric products. The second is a 3D modelling module for calculating the surface area for non-axisymmetric products. The third is a blank design module for creating an oval-shaped blank with an identical surface area. The fourth is a process planning module based on production rules that play the most important role in an expert system for manufacturing. The production rules are generated and upgraded by interviewing field engineers. The drawing coefficient, the punch and die radii for elliptical shape products are considered as the main design parameters. The suitability of this system was verified by applying it to a real deep drawing product. This surface area calculation and CAPP system should be very useful for reducing the lead-time for manufacturing and for improving the accuracy of products.