CAD/CAM 原理与应用（英文版） CAD/CAM Principles and Applications—

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装订：平装

编辑：段晓雅

开本：16

出版日期： 2016-02-17

字数：304 千字

最新版印次：1-2

最新印次时间：2016-02-17

定价：39.5

cip：2015307968

图书简介

本书以实体模型、表面模型、特征及参数化模型的建模原理、CAD/CAM的集成问题、计算机集成制造系统为主线，阐述了CAD/CAM领域内技术原理及应用，并将CAD领域的另一分支逆向工程技术编入其中，以反映CAD技术的全貌，在CAD/CAM的集成方面引入了新的STEP-NC及特征的识别技术。

章节目录

Chapter 1An Overview of CAD/CAM1
1.1Concept of CAD/CAM1
1.2Process of ComputerAided Design2
1.3Process of ComputerAided Manufacturing5
1.4Integration of CAD/CAM6
1.5CAD Environment8
1.5.1CAD Hardware8
1.5.2CAD Software10
1.6Applications of CAD/CAM12
1.7History and Trends of CAD/CAM16
Assignments20
Chapter 2Solid Modeling22
2.1An Overview of Solid Modeling22
2.1.1Concept of Solid Modeling22
2.1.2Application of Solid Modeling22
2.1.3Advantages of Solid Modeling23
2.2Solid Model Representation24
2.3Wireframe Model25
2.4Surface Model26
2.4.1Introduction to Surface Model26
2.4.2Mathematic Representations of Curves26
2.4.3Introduction to Splines28
2.4.4Bézier Curves/Surfaces29
2.4.5Rational Bézier Curves31
2.4.6BSpline Curves/Surfaces31
2.4.7NURBS36
2.4.8Generalization of BSpline to NURBS38
2.4.9Intuitive Understanding of NURBS40
2.4.10Choosing a Representation44
2.4.11Smoothness45
2.4.12Applications of NURBS Curves/Surfaces47
2.4.13Surfaces Based on Triangle Meshes48
2.5Solid Model50
2.6Solid Model Creation Scheme51
2.7Constructive Solid Geometry Scheme51
2.8Boundary Representation (BRep) Scheme54
2.8.1Boundary Representation54
2.8.2The WingedEdge Data Structure55
2.8.3Faces Have Holes58
2.8.4Exact BRep and Faceted BRep58
2.8.5Advantages and Disadvantages of BRep59
ContentsCAD/CAM原理与应用（英文版）2.9Sweeping Scheme59
2.10Reverse Engineering61
2.10.1Introduction61
2.10.2Process of Reverse Engineering62
2.10.3Reverse Engineering Hardware63
2.10.4Point Cloud Data Processing65
2.10.5Reverse Engineering Software65
2.10.6Reverse Engineering Application67
2.10.7Reverse Engineering Modeling Method69
Assignments76
Chapter 3FeatureBased Modeling79
3.1Introduction to FeatureBased Design79
3.1.1Feature Definitions79
3.1.2How to Obtain Application Features81
3.1.3The Significance of FeatureBased Design83
3.2Parametric Modeling Technology84
3.3Extended Variational Technology84
3.4Main Features of Parametric FeatureBased CAD System85
3.4.1Modeling Based on Features85
3.4.2Modeling Based on History85
3.4.3Modeling Based on Parameters88
3.4.4Modeling Based on Constraints89
3.4.5Modeling Based on Design Intent92
3.4.6Modeling Based on Associativity94
3.5Trends of Solid Modeling95
3.5.1Direct Modeling97
3.5.2Synchronous Technology98
3.5.3Integrated Modeling Approach100
Assignments100
Chapter 4CAD/CAM Integration103
4.1Introduction103
4.2Initial Graphics Exchange Specifications104
4.2.1Introduction104
4.2.2Structure of IGES Files106
4.2.3Basic IGES Entities108
4.2.4An Example of IGES Files109
4.2.5Limitations of IGES110
4.3Standard for the Exchange of Product Model Data110
4.3.1Introduction110
4.3.2An Example of STEP Files111
4.4STEPNC113
4.4.1Introduction113
4.4.2Research and Development114
4.4.3STEPNC115
4.4.4STEPNC Data Model118
4.4.5STEPNC Application Case Study: SPAIM120
4.4.6Benefits of STEPNC 123
4.4.7Future Development124
4.5Feature Recognition125
4.5.1Introduction125
4.5.2Historical Perspective127
4.5.3Manufacturing/Machining Features127
4.5.4Feature Recognition129
4.5.5Automatic Feature Recognition133
4.5.6Commercial Feature Recognition Systems133
4.6Group Technology134
4.6.1Concept134
4.6.2The Role of Group Technology in CAD/CAM Integration134
4.6.3Ways to Identify Part Family135
4.6.4Benefits of a WellDesigned Classification and Coding System140
4.6.5Machine Cell Design—Types of GT Cells140
4.6.6Benefits of Group Technology140
4.6.7Problems in Group Technology140
4.7Benefits of Integrated CAD/CAM141
Assignments142
Chapter 5ComputerIntegrated Manufacturing System145
5.1Introduction145
5.2Key Challenges147
5.3Subsystems in ComputerIntegrated Manufacturing148
5.4Application149
5.5Flexible Manufacturing System149
5.5.1Introduction149
5.5.2Concept of Flexible Manufacturing System150
5.5.3Advantages and Disadvantages of Flexible Manufacturing System151
5.5.4Theory of Flexible Manufacturing System152
5.5.5Workstations154
5.5.6Flexibility and Its Type164
5.5.7Types of FMS165
5.5.8Five Types of FMS Layouts168
5.5.9Application of FMS170
5.5.10Recent Trends170
5.6Other Technologies172
5.6.1Lean Manufacturing172
5.6.2Just In Time173
Assignments176
Appendix179
References184
目录前言
第1章CAD/CAM概述1
1.1CAD/CAM的概念1
1.2计算机辅助设计过程2
1.3计算机辅助制造过程5
1.4CAD/CAM的集成6
1.5CAD软件8
1.5.1CAD硬件8
1.5.2CAD软件10
1.6CAD/CAM的应用12
1.7CAD/CAM的历史及未来发展趋势16
作业20
第2章实体建模22
2.1实体建模概述22
2.1.1实体建模的概念22
2.1.2实体模型的应用22
2.1.3实体建模的优点23
2.2实体模型的表示方法24
2.3线框模型25
2.4表面模型26
2.4.1表面模型简介26
2.4.2曲线的参数化表示26
2.4.3样条曲线简介28
2.4.4Bézier曲线/曲面29
2.4.5有理Bézier曲线31
2.4.6B样条曲线/曲面31
2.4.7NURBS（非圴匀有理样条曲线）36
2.4.8B样条曲线到NURBS曲线的泛化38
2.4.9直观理解NURBS40
2.4.10曲线/曲面表示方法选择44
2.4.11光顺性45
2.4.12NURBS曲线/曲面的应用47
2.4.13基于三角网格化的曲面48
2.5实体模型50
2.6实体模型的创建方案51
2.7CSG树51
2.8边界模型54
目录CAD/CAM原理与应用（英文版）2.8.1边界模型的表示法54
2.8.2翼边数据结构55
2.8.3有孔表面的边界模型58
2.8.4精确边界模型和近似边界模型58
2.8.5边界模型的优缺点59
2.9扫描/扫掠法59
2.10反求工程/逆向工程61
2.10.1简介61
2.10.2反求工程流程62
2.10.3反求工程硬件设备63
2.10.4点云数据的处理65
2.10.5反求工程软件65
2.10.6反求工程的应用67
2.10.7反求工程建模方法69
作业76
第3章参数化特征建模技术79
3.1特征设计简介79
3.1.1特征定义79
3.1.2特征的获取81
3.1.3特征设计的意义83
3.2参数化建模技术84
3.3变量几何技术84
3.4参数化特征CAD系统的主要特点85
3.4.1特征建模85
3.4.2基于历史的建模85
3.4.3参数化建模88
3.4.4约束建模89
3.4.5设计意图建模92
3.4.6关联建模94
3.5实体建模的发展趋势95
3.5.1直接建模97
3.5.2同步建模98
3.5.3集成建模方法100
作业100
第4章CAD/CAM集成技术103
4.1简介103
4.2初始图形交换标准104
4.2.1简介104
4.2.2IGES文件结构106
4.2.3基本的IGES实体108
4.2.4IGES文件实例109
4.2.5IGES的局限性110
4.3产品模型数据交换标准110
4.3.1简介110
4.3.2STEP文件实例分析111
4.4STEPNC113
4.4.1简介113
4.4.2研究和发展114
4.4.3STEPNC115
4.4.4STEPNC数据模型118
4.4.5STEPNC应用案例：SPAIM120
4.4.6STEPNC的好处123
4.4.7未来的发展124
4.5特征识别125
4.5.1简介125
4.5.2历史回顾127
4.5.3制造/加工特征127
4.5.4特征识别129
4.5.5自动特征识别133
4.5.6商用特征识别系统133
4.6成组技术134
4.6.1概念134
4.6.2成组技术在CAD/CAM集成中的作用134
4.6.3确定零件族的方法135
4.6.4设计良好的分类和编码系统的好处140
4.6.5加工单元设计——GT单元的种类140
4.6.6成组技术的好处140
4.6.7成组技术存在的问题140
4.7CAD/CAM集成的好处141
作业142
第5章计算机集成制造系统145
5.1简介145
5.2面临的主要问题147
5.3计算机集成制造子系统148
5.4应用149
5.5柔性制造系统149
5.5.1简介149
5.5.2柔性制造系统的概念150
5.5.3柔性制造系统的优缺点151
5.5.4柔性制造系统的理论152
5.5.5工作站154
5.5.6柔性及其类型164
5.5.7柔性制造系统的类型165
5.5.8五种柔性制造系统布局168
5.5.9柔性制造系统的应用170
5.5.10发展趋势170
5.6其他相关技术172
5.6.1精益制造172
5.6.2准时化生产173
作业176
附录179
参考文献184

前言/序言展开 + 收缩 —

comPrefaceCAD/CAM course is one of compulsory courses in mechanical engineering. In Chinese universities, courses related to CAD/CAM technology are open for undergraduate and graduate students majoring in Mechanical Engineering. Currently, one major trend in many universities is to promote internationalization of higher education. Education departments at all levels encourage and support universities to give lessons to students in bilingual way even in full English，and many universities recruit foreign students world widely. Therefore, textbooks in English, which act as the cornerstone in the process of internationalization of higher education, are urgently needed.This book is written based on the above reality demand. Teaching materials contained in the book were given to the domestic and international postgraduates in the form of handouts in past years, and went through several rounds of teaching trial. A lot of improvement and revision have been made. The book consists of 5 chapters. Chapter 1 provides a fundamental coverage of concepts, methods, principles and applications as well as future trends of CAD/CAM technology. The method and theory of solid modeling are discussed in Chapter 2. Chapter 2 focuses on exploring surface models mathematically. In addition, reverse engineering（RE）—another branch in CAD is presented in Chapter 2. Chapter 3 about featurebased parametric modeling technology, and the latest direct modeling, synchronous technology, as well as integrated modeling approach, are introduced from the perspective of application. CAD/CAM integration is explored in Chapter 4, and it involves in IGES, STEP, STEPNC, feature recognition and group technology. Computer integrated manufacturing system (CIMS) is introduced in Chapter 5.The Tocus of this chapter is flexible manufacturing system (FMS).The main features of this book are as follows:(1) Organizing teaching contents concisely and practicably, so that readers are able to master the basic concepts, principles and methods of CAD/CAM, which will build a good foundation for them to do more further research in CAD/CAM；(2) In order to help readers test the effect of learning, a number of assignments are provided at the end of each chapter；(3) Written in English with Chinese annotation of related words at the end of each chapter，the book may be used as a textbook for undergraduates and graduate students in bilingual or full English teaching practice, or used as a reference book for engineers engaged in the application of CAD/CAM.For teaching undergraduates, it is suggested that the teaching focus should be on the first three chapters. In Chapter 2, the mathematical principles behind the curves/surfaces should be introduced in detail, then give an assignment to students，for example,to construct complex surface model, such as human faces, shells of cars and planes etc. by using software involving NURBS function. In Chapter 3, it is suggested that a comprehensive assignment should be given to students, for example, to build 3D parametric models of a complicated product by using one of 3D design software, so that students could combine theory with practice.For teaching graduate students, it is suggested that programming assignments should be given to students in Chapter 2. For example, to write computer programs based on the algorithms mentioned in the book to create 3 degree Bézier/NURBS curves using programming language like C++ or Matlab, and students’ solutions are expected to have interactive user interfaces. Chapter 5 can be finished in the form of seminars. Four or five students form a collaborative learning group at the beginning of the class and an assignment is given to each group. Each group chooses a topic related to advanced manufacturing technology and does research work on it, then makes a presentation about their research,and presents it in the class during seminars.I would like to extend my hearty thanks to College of Mechanical and Electrical Engineering, Hohai University, which provides a lot of support for publishing the book at many levels. I would also like to thank Jiang Dan of Shanghai Jiao Tong University,who reviewed the book carefully and made valuable suggestions.Finally, I welcome and appreciate all comments and suggestions from readers so as to make further improvements to the book.Kang LanChapter 1An Overview of CAD/CAMCAD/CAM原理与应用（英文版）前言CAD/CAM课程是机械工程专业开设的一门学位课程，国内有机械工程专业的高等院校在本科生和研究生教育中都设有与CAD/CAM技术相关的课程。当前国内许多高校都在朝着教育面向国际化的方向发展，各级教育部门大力鼓励和支持有条件的高校在本科生及研究生教学中开展双语乃至全英文教学，许多高校面向全球招收留学生，因此急需全英文教材，全英文教材是高校向国际化教育发展的基石。本书正是基于以上的现实需求而编写的，其内容以讲义的形式已在留学研究生（全英文教学）及国内研究生（双语和全英文教学）中进行了几轮的教学试用，并经过了多次的修改与完善。本书的主要特点如下：（1）在内容编排上力求简练实用，使读者能掌握CAD/CAM技术领域的基本概念、原理和方法，为进一步深入学习和研究奠定基础。（2）每章最后有相应的课后练习，以辅助检验学习者的学习效果。（3）全英文编写，每章后有对相关词汇的中文注解，本书可作为高等工科院校机械工程及相关专业本科生及研究生的双语或全英文教学用书，也可作为从事CAD／CAM技术应用的工程技术人员的参考书。在本科生教学中，建议教学的侧重点放在前3章，第2章中应详细介绍曲线曲面背后的数学原理，之后以集成了NURBS曲线曲面功能的工程软件为平台，给学生布置大作业，将理论与实践相结合，应用软件完成一个复杂的表面模型的构建，如人脸、汽车、飞机外壳等。第3章中结合教材内容，给学生布置大作业，让学生利用参数化软件完成一个复杂产品的三维参数化建模设计。在研究生教学中，建议在曲线曲面部分给学生布置一项编程的综合作业，让学生根据教材中所讲的算法以Matlab或C++为平台完成三次贝塞尔曲线及NURBS曲线的生成，有界面并有一定的交互功能。第5章可以以研讨课的形式来开展，课程开始之时让学生4～5人组成一组，每组以先进的CAM技术为话题，课后进行深入的研究与学习，每组制作演示文稿，并在研讨课上进行讨论与交流。本书从撰写到出版得到了河海大学机电工程学院的大力支持，在此表示由衷的感谢！上海交通大学的蒋丹教授审阅了全部的书稿，在此表示由衷的感谢！最后，热忱欢迎各界读者提出批评和建议，以便以后进行改进。康兰 ContentsPreface

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