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本教材是根據(jù)教育部提出的“面向21世紀教學內(nèi)容和課程體系改革計劃”的基本思想，以滿足新世紀教學改革和教材改革為指導思想進行編寫的，全書以培養(yǎng)機械系統(tǒng)方案創(chuàng)新設計能力為目標，在內(nèi)容編排上貫穿了以設計為主線的思想，將全書內(nèi)容進行了有機的組合，共分為十章，主要內(nèi)容包括；機構的結構分析，機構的性能分析，平面連桿機構、凸輪機構、齒輪機構、輪系及其設計，其他常用機構及其設計，機構系統(tǒng)動力學設計，機械系統(tǒng)的運動方案及機構的創(chuàng)新設計。為了方便讀者掌握重點內(nèi)容和拓寬知識面，每章后均有“知識要點與拓展”的內(nèi)容。本書在注重培養(yǎng)學生邏輯思維能力的同時，還配有多媒體教學軟件，為開發(fā)學生手形象思維能力創(chuàng)造了條件。本書主要作為普通高等院校機械類專業(yè)的教學用書，也可作為非機械類專業(yè)學生及有關工程技術人員的參考書。

This book has been written for mechanical engineering students who are beginning to study the theory of machines and mechanisms or professional English.Since the book was published in 2012, some universities take it as Chinese textbook of theory of machines and mechanisms for undergraduates, some universities take it as English textbook of theory of machines and mechanisms for undergraduates, some universities take it as bilingual education textbook of theory of machines and mechanisms, some universities take it as foreign students textbook of theory of machines and mechanisms,and some universities take it as international class students textbook of theory of machines and mechanisms. Such students will have acquired a set of mechanical engineering knowledge and the ability to use English language to express themselves in spoken and written forms.This edition has been influenced by changes in engineering education, suggestions by colleagues and users, and the author’s checkup.The major revisionary works for publishing this new edition are as follows.Effort has been made to remove all sorts of errors and misprints as far as possible.We adopt a simple mathematical manner for easy comprehension by students in Chapter 5, but there are not any examples to describe the new methods. So many examples have been added in Chapter 5.Geneva wheel with 6 slots will be more helpful to understand the action ratio, so we use a Geneva wheel with 6 slots instead of Geneva wheel with 4 slots.Some of examples have been added in Chapter 13 too.Twodimensional codes are added in this edition to describe the mechanisms animated figures.I acknowledge the efforts of professor He Cencheng of Beijing University of Technology for revisionary and compiled works for this edition.Zhao Jiaheng of Beijing Institute of Technology compiled some examples.Finally, I make an affectionate acknowledge to my PhD doctors team for their support.I am grateful to all readers who pointed out errors and mistakes of the previous edition and gave valuable suggestions.Zhang Chunlin本教材是為機械工程專業(yè)的學生學習機械原理課程或?qū)I(yè)英語編寫的。

本教材于2012年出版后，一些學校選其作為本科生機械原理課程的中文教材，教學時講授中文，英語內(nèi)容作為參考；一些學校選其作為機械原理課程的英文教材，教學時講授英文，中文內(nèi)容作為參考；一些開設雙語教學的學校，選其作為本科生的英漢雙語教學機械原理課程教材，教學時有時用英文講授，有時用中文講授，中、英文內(nèi)容可用來對比和參考。一些學校選其作為外國留學生的機械原理課程教材，也有一些學校選其作為國際班的機械原理課程教材。本教材不但使學生獲得機械原理的基本知識，還可以提高學生英語的口語和寫作能力。

經(jīng)過幾年的使用，根據(jù)作者自查和用戶意見反饋，對其進行了修改、補充和完善，如在平面連桿機構的綜合內(nèi)容中，引入了新方法，但缺少例題佐證。所以，本次修改增加了相應例題；在說明槽輪機構的運動特性時，采用了六槽槽輪代替四槽槽輪，這樣就容易理解主動銷輪和從動槽輪的轉(zhuǎn)角關系，更容易理解槽輪機構的運動系數(shù)。在機械平衡設計一章中也增加了例題。

本次修訂還更正了一些文字錯誤和語法錯誤，并引入了二維碼技術，讀者只要用手機掃描插圖旁的二維碼，就可以觀看相應機構的動畫，增強了本教材的可讀性。

北京工業(yè)大學的何岑成老師參與了本次修訂工作和英語教材的編審工作，北京理工大學的趙嘉珩為本教材增編了例題。

感謝我的博士生團隊為本書的修訂所做的工作。

由于編者水平有限，書中難免存在錯誤和疏漏之處，歡迎廣大讀者批評指正。

張春林Along with the rapid development of science and technology, the higher education will speed up internationalization. So it is necessary to compile a compatible textbook which not only has Chinese feature, but also makes for globalization. This is a new object that the teaching reform of China s higher education is faced with. On the one hand, the direct adoption of the foreign classical textbooks does not suit the actual state of our teaching in Chinese universities; on the other hand, the Chinese language textbooks cannot be brought in line with the international practice. Therefore, we will compile a bilingual textbook on “theory of machines and mechanisms” with the support of China Machine Press.This book is based on the basic teaching r

Preface to the Second Edition（第2版前言） Preface to the first Edition（第1版前言） Chapter 1Introduction緒論1 11General Information機械總論2 12Teaching Content and Object of the Course機械原理課程的研究對象與內(nèi)容6 13Purpose of This Course學習機械原理課程的目的8 Chapter 2Structural Analysis of Planar Mechanisms平面機構的結構分析11 21Kinematic Chain and Mechanisms運動鏈與機構12 22Schematic Diagram of Mechanisms機構運動簡圖16 23Degree of Freedom of Planar Mechanisms機構自由度的計算22 24Mechanism Analysis and Innovation機構分析與創(chuàng)新30 Chapter 3Kinematic Analysis of Planar Mechanisms平面機構的運動分析41 31Introduction 平面機構運動分析概述42 32Velocity Analysis with Instantaneous Center用速度瞬心法對機構進行速度分析44 33Kinematic Analysis by Graphical Method用相對運動圖解法對機構進行運動分析48 34Kinematic Analysis by Algebraic Method用解析法對機構進行運動分析60 Chapter 4Force Analysis of Planar Mechanisms平面機構的力分析67 41Introduction平面機構力分析概述68 42Force Analysis Including Inertia Forces in Mechanisms計入慣性力的機構力分析68 43Force Analysis Including Friction in Mechanisms計入摩擦的機構力分析76 44Friction and Design of SelfLocking Mechanisms摩擦與自鎖機構的設計88 Chapter 5Synthesis of Planar Linkages平面連桿機構及其設計95 51Characteristics and Types of Planar Linkages平面連桿機構的特點與基本型式96 52Fundamental Features of Fourbar Linkages平面連桿機構的基本性質(zhì)104 53Synthesis of FourBar Linkages平面連桿機構的設計112 Chapter 6Design of Cam Mechanisms凸輪機構及其設計137 61Introduction凸輪機構概述138 62Basic Types of Follower Motion and Design從動件的運動規(guī)律及其設計144 63Cam Profile Synthesis凸輪輪廓曲線的設計156 64Sizes of Cam Mechanisms凸輪機構基本尺寸的設計164 65ComputerAided Design of Cam Mechanisms計算機輔助凸輪設計170 目錄Theory of Machines and Mechanisms (Bilingual Edition)Chapter 7Design of Gear Mechanisms齒輪機構及其設計177 71Classification of Gear Mechanisms齒輪機構的分類178 72Fundamental Law of Gearing齒廓嚙合基本定律180 73Involute Properties and Involute Tooth Profiles漸開線齒廓及其嚙合特點182 74Nomenclatures of Standard Spur Gear and Gear Sizes 漸開線標準直齒圓柱齒輪的基本參數(shù)和幾何尺寸186 75Meshing Drive of Standard Spur Gears漸開線直齒圓柱齒輪機構的嚙合傳動192 76Forming and Undercutting of Gear Teeth漸開線圓柱齒輪的加工及其根切現(xiàn)象202 77Nonstandard Spur Gears變位齒輪概述208 78Parallel Helical Gears平行軸斜齒圓柱齒輪機構212 79Worm and Worm Gears蝸桿傳動機構220 710Bevel Gears錐齒輪機構226 Chapter 8Design of Gear Trains輪系及其設計233 81Classification of Gear Trains輪系及其分類234 82Ratio of Ordinary Gear Trains定軸輪系傳動比的計算236 83Ratio of Epicyclic Gear Trains周轉(zhuǎn)輪系傳動比的計算242 84Ratio of Combined Gear Trains混合輪系傳動比的計算246 85Some Considerations for Design of Planetary Gear Train周轉(zhuǎn)輪系設計中的若干問題250 86Introduction of Miscellaneous Planetary Trains其他類型的周轉(zhuǎn)輪系簡介258 Chapter 9Introduction of Screws, Hooks Couplings and Intermittent Mechanisms 螺旋機構、萬向聯(lián)軸器和間歇運動機構簡介265 91Screw Mechanisms螺旋機構266 92Universal Joints萬向聯(lián)軸器268 93Ratchet Mechanisms棘輪機構270 94Geneva Mechanisms槽輪機構274 95Indexing Cam Mechanisms凸輪式間歇運動機構278 96Intermittent Gear Mechanisms不完全齒輪機構280 Chapter 10Spatial Mechanisms and Robotic Mechanisms 空間連桿機構及機器人機構概述285 101Introduction of Spatial Mechanisms空間連桿機構概述286 102Introduction of Robotic Mechanisms機器人機構概述292 Chapter 11Design of Mechanism Systems機構系統(tǒng)設計299 111Introduction of Mechanism Systems機構系統(tǒng)設計概述300 112Harmonization Design of Mechanism Motions機構系統(tǒng)的運動協(xié)調(diào)設計302 113Combined Methods of Mechanism Systems機構系統(tǒng)的組合方法304 Chapter 12Fluctuation and Regulation in Speed of Machines 機械系統(tǒng)的運轉(zhuǎn)及速度波動的調(diào)節(jié)313 121Operating Analysis of Machinery機械運轉(zhuǎn)過程分析314 122Equivalent Kinetic Model of Mechanism Systems機械系統(tǒng)的等效動力學模型318 123Kinetic Equations of Mechanism Systems機械系統(tǒng)的運動方程及其求解326 124Periodic Speed Fluctuation and Regulation in a Machine周期性速度波動及飛輪設計330 125Aperiodic Speed Fluctuation and Regulation in a Machine非周期性速度波動及其調(diào)節(jié)338 Chapter 13Balance of Machinery機械的平衡設計343 131Introduction 機械平衡概述344 132Balance Design of Rigid Rotors剛性轉(zhuǎn)子的平衡設計346 133Balance Test of Rigid Rotors剛性轉(zhuǎn)子的平衡試驗356 134Balance of Planar Mechanisms平面機構的平衡簡介360 Appendix 附錄一362 Appendix 附錄二372 References 參考文獻379

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