Preface前言 Chapter 1Introduction绪论1 11General Information机械总论2 12Teaching Content and Object of the Course机械原理课程的研究对象与内容6 13Purpose of This Course学习机械原理课程的目的8 Chapter 2Structural Analysis of Planar Mechanisms平面机构的结构分析11 21Kinematic Chain and Mechanisms运动链与机构12 22Kinematic Diagram of Mechanisms机构运动简图16 23Degree of Freedom of Mechanisms机构自由度的计算22 24Mechanism Analysis and Innovation机构分析与创新30 Chapter 3Kinematic Analysis of Planar Mechanisms平面机构的运动分析41 31Introduction 平面机构运动分析概述42 32Velocity Analysis with Instantaneous Center用速度瞬心法对机构进行速度分析44 33Kinematic Analysis by Graphical Method用相对运动图解法对机构进行运动分析48 34Kinematic Analysis by Analytical Method用解析法对机构进行运动分析60 Chapter 4Force Analysis of Planar Mechanisms平面机构的力分析67 41Introduction平面机构力分析概述68 42Force Analysis Including Inertia Forces in Mechanisms计入惯性力的机构力分析68 43Force Analysis Including Friction in Mechanisms计入摩擦的机构力分析76 44Friction and Design of Selflocking Mechanisms摩擦与自锁机构的设计88 Chapter 5Synthesis of Planar Linkages平面连杆机构及其设计95 51Characteristics and Types of Planar Linkages平面连杆机构的特点与基本型式96 52Fundamental Features of Fourbar Linkages平面连杆机构的基本性质104 53Synthesis of FourBar Linkages平面连杆机构的设计112 54Introduction of Compliant Mechanisms柔顺机构概述134 55Introduction of Biomechanisms仿生机构概述146 Chapter 6Design of Cam Mechanisms凸轮机构及其设计165 61Introduction凸轮机构概述166 62Basic Types of Follower Motion and Design从动件的运动规律及其设计172 63Cam Profile Synthesis凸轮轮廓曲线的设计184 64Sizes of Cam Mechanisms凸轮机构基本尺寸的设计192 65ComputerAided Design of Cam Mechanisms计算机辅助凸轮设计198 目录Theory of Machines and Mechanisms (Bilingual)Chapter 7Design of Gear Mechanisms齿轮机构及其设计205 71Classification of Gear Mechanisms齿轮机构的分类206 72Fundamental Law of Gearing齿廓啮合基本定律208 73Involute Properties and Involute Tooth Profiles渐开线齿廓及其啮合特点210 74Nomenclatures of Standard Spur Gear and Gear Sizes 渐开线标准直齿圆柱齿轮的基本参数和几何尺寸214 75Meshing Drive of Standard Spur Gears渐开线直齿圆柱齿轮机构的啮合传动220 76Forming and Undercutting of Gear Teeth渐开线圆柱齿轮的加工及其根切现象230 77Nonstandard Spur Gears变位齿轮概述236 78Parallel Helical Gears平行轴斜齿圆柱齿轮机构240 79Worm and Worm Gears蜗杆传动机构248 710Bevel Gears锥齿轮机构254 Chapter 8Design of Gear Trains轮系及其设计261 81Classification of Gear Trains轮系及其分类262 82Ratio of Ordinary Gear Trains定轴轮系传动比的计算264 83Ratio of Epicyclic Gear Trains周转轮系传动比的计算270 84Ratio of Combined Gear Trains混合轮系传动比的计算274 85Some Considerations for Design of Planetary Gear Train周转轮系设计中的若干问题278 86Introduction of Miscellaneous Planetary Gear Trains其他类型的周转轮系简介286 Chapter 9Introduction of Screws, Hooks Couplings and Intermittent Mechanisms 螺旋机构、万向联轴器和间歇运动机构简介293 91Screw Mechanisms螺旋机构294 92Universal Joints万向联轴器296 93Ratchet Mechanisms棘轮机构298 94Geneva Mechanisms槽轮机构302 95Indexing Cam Mechanisms凸轮式间歇运动机构306 96Intermittent Gear Mechanisms不完全齿轮机构308 Chapter 10Spatial Mechanisms and Robotic Mechanisms 空间连杆机构及机器人机构概述313 101Introduction of Spatial Mechanisms空间连杆机构概述314 102Introduction of Robotic Mechanisms机器人机构概述320 Chapter 11Design of Mechanism Systems机构系统设计327 111Introduction of Mechanism Systems机构系统设计概述328 112Harmonization Design of Mechanism Motions机构系统的运动协调设计330 113Combined Methods of Mechanism Systems机构系统的组合方法332 Chapter 12Fluctuation and Regulation in Speed of Machines 机械系统的运转及速度波动的调节341 121Operating Analysis of Machinery机械运转过程分析342 122Equivalent Kinetic Model of Mechanism Systems机械系统的等效动力学模型346 123Kinetic Equat
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This textbook is written for students majoring in mechanical engineering to study the course“theory of machines and mechanisms”or professional English It is based on the basic teaching requirement of the theory of machines and mechanisms issued by the Ministry of Education, it emphasizes the cultivation of basic theories, methods, and skills, while taking design as the main line and highlighting the cultivation of innovative consciousness and innovative design abilityThe bilingual textbook not only reflects the content and characteristics of the textbooks in China, but also aligns with those abroad Since the second publication in 2016, some schools chose this textbook as the teaching material for undergraduate courses in theory of machines and mechanismsIt was taught in Chinese, with the English content provided as a referenceOther schools used it as the English textbook for theory of machines and mechanisms courses and taught it in English, with the Chinese content provided as a referenceSome schools with bilingual teaching programs chose it as the bilingual teaching material for undergraduate courses in theory of machines and mechanismsThe teaching was conducted in both English and Chinese, with the content available for comparison and referenceSome schools selected it as the textbook for theory of machines and mechanisms courses for foreign students studying in China The third edition incorporates much of the feedback received from faculty and students who used the first two editions and author’s selfchecks, resulting in multiple revisions, supplements, and improvements Following are some distinctive features of this book: 1)Explanations have been provided to facilitate alignment between Chinese and foreign teaching materialsFor example, in Chapter 2, the term local degree of freedom and virtual constraint in the Chinese version are translated as redundant degree of freedom and redundant constraint in the English version, respectivelyPreserving these differences is beneficial 2)Corresponding examples have been added to Chapter 5They will be of value in the comprehensive content of planar linkages with a new method introduced 3)A sixslot Geneva wheel has been used in explaining the motion characteristics of Geneva mechanism instead of a fourslot Geneva wheel, making it is easier to understand the turning angle relationship between the driving pin wheel and driven Geneva wheel, and to comprehend the motion coefficients of Geneva mechanism 4)Examples have also been added to Chapter 13 on balance of machinery 5)English pronunciations of formulas and symbols related to the course content have been included in the appendix to address the issue of some faculty being unable to read formulas or professional symbols 6)The latest developments in mechanical engineering have been added in this revision, such as the compliant mechanisms and biomechanismsThese additions continuously enhance and develop the course content of theory of machines and mechanisms 7)Problems reflecting fundamental concepts, theories, and methods have been added to each chapter, presented in the form of QR codesReaders can simply scan the QR code use wechat app to answer the questions 8)QR code has been introduced for the corresponding animated image of the mechanismReaders can simply scan the QR code next to the illustration with their mobile phone, which enhances the readability of this book In the end, the purpose of any textbook is to guide students through a learning experience in an effective mannerWe sincerely hope that this book will fulfill this intention The authors of the English version are as follows:Zhang Ying of Beijing University of Technology compiled and translated Chapters 1, 2, 3, 4, 5, 6, 7, 8 and 9;Zhao Ziqiang compiled and translated Chapters 10 and 11;Zhang Ziqiang compiled and translated Chapters 12 and 13 The authors of the Chinese version are as follows:Zhang Chunlin (Chapter 1, 2 and 3); Zhao Ziqiang (Chapter 4, 5 and 6); Li Zhixiang (Cha