序
中文版前言
Preface
Chapter 1AutoCAD Basics1
1.1Starting to Draw1
1.1.1Creating a New Drawing1
1.1.2Saving Drawing File3
1.1.3Closing a Drawing and Exiting AutoCAD4
1.2Using Commands4
1.2.1User Interface5
1.2.2Command Line and Dynamic Input8
1.2.3Command Techniques9
1.2.4Drawing Units11
相关词汇注解12
Chapter 2Drawing in Two Dimensions13
2.1Drawing Simple Lines13
2.1.1Using the Line Command13
2.1.2Drawing Rectangles14
2.1.3Drawing Polygons15
2.2Drawing Curves and Points17
2.2.1Drawing Circles17
2.2.2Drawing Arcs17
2.2.3Creating Ellipses and Elliptical Arcs19
2.3Viewing Your Drawing20
2.3.1Regenerating and Redrawing20
2.3.2Panning20
2.3.3Zoom Command21
2.4Editing Drawing with Basic Tools22
2.4.1Basics of Object Selections23
2.4.2Erasing Objects23
2.4.3Moving Objects23
2.4.4Copying Objects24
2.4.5Copying and Moving Objects from Other Drawings25
2.4.6Rotating Objects25
2.4.7Scaling Objects25
2.4.8Change Command26
2.5Editing Drawing with Advanced Tools27
2.5.1Copying and Moving Objects27
2.5.2Construction Commands34
2.6Layers，Colors，Linetypes，and Lineweights in Drawing36
2.6.1Layers37
2.6.2Creating New Layers38
2.6.3Naming Layer39
2.6.4Assigning Color39
2.6.5Assigning Linetype40
2.6.6Assigning Lineweight41
2.6.7Using Layers41
相关词汇注解42
Chapter 3Basic Drawing44
3.1Introduction44
3.2National Standards for Mechanical Drawing44
3.2.1Sheet Sizes and Layouts44
3.2.2Scales47
3.2.3Basic Conventions for Lines49
3.2.4Lettering50
3.3Sketching51
3.3.1Sketching Techniques51
3.3.2Isometric Sketches53
3.3.3Oblique Sketches54
相关词汇注解54
Chapter 4Orthographic Projection55
4.1Introduction55
4.2Projection Theory and Characteristics55
4.2.1Orthographic Projection55
4.2.2Characteristics of Orthographic Projection56
4.2.3Three-Projection-Plane System57
4.2.4Projections of Points in Three-Projection-Plane System57
4.2.5Projections of Lines in Three-Projection-Plane System58
4.2.6Projections of Planes in Three-Projection-Plane System60
4.3Three Views of Basic Geometric Solids61
4.3.1Projection Rules between Views62
4.3.2Three Views of Basic Geometric Solids63
4.4Intersections67
4.4.1Plane-Intersections67
4.4.2Plane-Intersections of Plane Geometric Solid Surfaces67
4.4.3Plane-Intersections of Cylindrical Surfaces70
4.4.4Plane-Intersections of Conic Surfaces72
4.4.5Plane-Intersections of Spherical Surfaces75
4.4.6Space-Intersections of Plane Solid and Revolving Solid76
4.4.7Space-Intersections of Intersecting Cylinders78
4.4.8Space-Intersections of Intersecting Cone and Cylinder80
4.5Three Views of Composite Solids81
4.5.1Creating Three Views of Composite Solid82
4.5.2Visualizing Composite Solid from Three Views84
相关词汇注解89
Chapter 5Representation of Drawings90
5.1Introduction90
5.2Views90
5.2.1Principal Views and Reference Arrow Views90
5.2.2Local Views91
5.2.3Inclined Views92
5.3Sectional Views93
5.3.1Visualizing a Sectional View93
5.3.2Cutting Plane Lines94
5.3.3Sectioning Symbols95
5.3.4Full Sectional Views96
5.3.5Half Sectional Views97
5.3.6Local Sectional Views98
5.3.7Inclined Sectional Views98
5.3.8Offset Sectional Views99
5.3.9Aligned Sectional Views101
5.4Cross-Sections101
5.4.1Removed Cross-Sections102
5.4.2Revolved Cross-Sections103
5.5Local Enlarged Views103
5.6Conventional Breaks104
5.7Ribs in Section105
相关词汇注解106
Chapter 6Dimensioning107
6.1Introduction107
6.2Basic Rules for Dimensioning107
6.3Dimension Terms108
6.4Dimensioning of Common Size108
6.5Dimensioning of Basic Geometric Solids114
6.6Dimensioning of Composite Solids115
相关词汇注解119
Chapter 7Tolerances120
7.1Introduction120
7.2Dimensional Tolerances120
7.3Fits122
7.4Creating Dimensional Tolerances in AutoCAD125
7.5Geometric Tolerances128
7.6Creating Geometric Tolerances in AutoCAD132
相关词汇注解134
Chapter 8Standard Parts and Commonly Used Parts136
8.1Introduction136
8.2Threads136
8.2.1Formation of Threads136
8.2.2Structural Elements of Threads137
8.2.3Classification of Threads138
8.2.4Conventional Representation of Threa
內容試閱：
This book is prepared as an innovative and comprehensive textbook for international and domestic undergraduates to learn“Mechanical Drawing”or“Engineering Drawing”courses in full English or bilingual Chinese-English settings.The course design is innovative in sense that it has been developed based on the comparison，absorption，and enhancement of the Engineering Drawing courses in top engineering universities and colleges worldwide.The book is aligned with the National Standard of Mechanical Drawing in China，and it covers technical drawing skills to inspire students’ interests in computer aided design（CAD）and make their learning experience more interactive and rewarding.
The features of this book are as follows：
1）In introducing the mechanical drawing theory，this book emphasizes on the integration of CAD theory with hand-on skill training of using CAD software tools；the teaching materials are prepared to cultivate students’ engineering intuition，awareness and desire for creativity.
2）The book has a clear course structure and a full coverage of theory and practice of engineering drawing.In each chapter，the key concepts are highlighted，and the teaching methods are designed to include the contents at different levels of difficulty for effective learning.Many examples are included to illustrate the concepts and drawing methods，and the project assignments are presented in some chapters to help students to learn and master knowledge through teamwork.
3）The book adopts the two-way method instead of the one-way method in traditional teaching，the information is expected to be exchanged between instructors and students in both ways.It requires that the use of each concept needs students to illustrate in CAD environment.Transforming one-way into two-way teaching mode allows instructors and students to be interactive and learning from each other effectively.
Wang Xiaoqin，Wu Fenxiang and Qiu Yafeng，three associate professors of Nanjing University of Science and Technology，wrote the main content of this book.Chapter 1，2 were compiled by Qiu Yafeng.Chapter 3～8 were written by Wang Xiaoqin.Chapter 9 and 10 were compiled by Wu Fenxiang.Deng Jiayi and Xia Tianyuan contributed to three-dimensional drawings in Chapter 4，5，6，7.Yan Wuling compiled the appendix.
We would like to express our sincere appreciation to the leaders and colleagues at School of Mechanical Engineering of Nanjing University of Science and Technology for their great support and collaboration.We would like to thank Professor Bi Zhuming at Department of Civil and Mechanical Engineering of Purdue University Fort Wayne for constructive proofreading of the manuscript.Finally，We cordially welcomes and appreciates all comments and suggestions from readers.
Wang XiaoqinContents
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