本书为《机械零件设计》第8版的缩编本，内容包括机械设计概论、基本应力分析和失效理论、轴的设计、弹簧、螺栓连接和螺旋传动、带传动、离合器、制动器和链传动、润滑、滚动轴承、直齿圆柱齿轮、斜齿轮、锥齿轮和蜗杆传动等。

本教材缩编自M.F.Spotts，T.E.Shoupand L.E.Hornberger编写的《Design of Machine Elements》（8fhEdition）。该书内容丰富，大部分内容适合我国机械类本科生的教学要求。原教材共15章，不仅包括典型机械零部件的设计方法，而且还包括工程力学、工程材料、形状综合原理和塑料零件的设计等内容。为和我国目前高校机械基础课程体系中机械设计课程的内容相衔接，以便于各类读者使用，编者对教材进行了重新组织和缩编。现包括9章内容，包括机械设计概论、基本应力分析和失效理论、轴的设计、弹簧、螺栓连接和螺旋传动、带传动、离合器、制动器和链传动、润滑、滚动轴承、直齿圆柱齿轮、斜齿轮、锥齿轮和蜗杆传动。从删减的内容看，其内容或是与我们的课程关系不大，或是在其他课程里已经学过。对于原书中丰富的习题，根据保留的基本内容进行了相应的删减。另外，原教材为读者提供了一些基本的工程力学计算、典型零部件的设计程序。为与纸质教材相关内容相一致，没有改变原程序中的模块编号。本教材可以作为英文或双语教学用机械设计课程的教材，也可供机械工程专业本科生、研究生或其他从事机械设计工作的专业人员参考。

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序

Preface

Introduction

 I-1　ProblemSolvingandDesign

 I-2　TheDesignProcess

 I-3　StagesofDesign

 I-4　FindingandUsingInformationinMachineDesign

 I-5　RecognizedStandardsforDesign

 I-6　ComputationalToolsforMachineDesign

 I-7　Conclusions

References

CHAPTER 1 WORKINGSTRESSESANDFAILURETHEORIES

 1-1　FailureandPhenomenologicalFailureTheories

 1-2　StressConcentrationCausedbySuddenChangeinForm

 1-3　DesignforCyclicLoading

 1-4　Conclusions

 References

 Problems

CHAPTER 2 DESIGNOFSHAFTS

 2-1　TorsionofCircularShaft

 2-2　MaximumStaticShearingStress

 2-3　DesignofShaftsforFluctuatingLoads

 2-4　Keys

 2-5　StressConcentration

 2-6　Couplings

 2-7　BendingLoadsinTwoPlanes

 2-8　DeflectionofShaftofNonuniformDiameter

 2-9　MaterialsUsedforShafting

 References

 Problems

CHAPTER 3 SPRINGS

 3-1　HelicalSprings

 3-2　PropertiesofSpringMaterials

 3-3　Hot-FormedSprings

 3-4　HelicalSpringofMinimumVolumeofMaterial-StaticLoad

 3-5　OptimumDesignofHelicalSpring

 3-6　FatigueofSprings

 3-7　DesignforFluctuatingLoads

 3-8　BucklingofCompressionSprings

 3-9　EffectofEndTurnsforCompressionSprings

 3-11　HelicalSpringswithTorsionalLoading

 3-12　LeafSprings

 3-13　BellevilleSpring

 3-14　RubberSprings

 References

 Problems

CHAPTER 4 SCREWS

 4-1　KindsofThreads

 4-2　EffectofInitialStress

 4-3　AdditionalDesignConsiderations

 4-4　PowerScrews

 4-5 Torque Required to Produce Desired Clampling Force

 4-6 Friction of Screws

 4-7 Stress Concentration

 4-8 Locknuts

 4-9 Materials and Methods of Manufacture

 4-10 Stress Due to Impact Load

 4-11 Relaxation

 References

 Problems

CHAPTER 5 BELTS,  CLUTCHES,  BRAKES AND CHAINS

 5-1 V-belts

 5-2 Center Distance for V-beh Drive

 5-3 Design of V-belts

 5-4 Other Types of Belts

 5-5 Disk or Plate Clutch

 5-6 Roller Chains

 5-7 Design Capacity of Roller Chains

 5-8 Galling of Roller Chains

 5-9 Polygonal Action

 5-10 Silent Chain

 References

 Problems

CHAPTER 6 LUBRICATION

 6-1 Viscosity and Newton's Law

 6-2 Petroff's Bearing Equation

 6-3 Load-Carrying Journal Bearing

 6-4 Load and Friction Curves for Journal Bearings

 6-5 Power Lost in Friction

 6-6 Designing for Film Temperature and Minimum Film Thickness

 6-7 Viscosity Index

 6-8 The Zn/P Curve

 6-9 Bearing Materials

 6-10 Bearing Loads

 6-11 Construction of Bearings

 6-12 Clearance and Oil Grooves

 6-13 Dry Friction

 6-14 Boundary or Thin-Film Lubrication

 6-15 Mixed or Semifluid Lubrication

 References

 Problems

CHAPTER 7 BALL AND ROLLER BEARINGS

 7-1 Construction and Types of Ball Bearings

 7-2 Selection of Ball Bearings

 7-3 Effect of Axial Load

 7-4 Design for Variable Loading

 7-5 Static Capacity

 7-6 Design for Different Confidence Levels

 7-7 Friction and Lubrication of Ball Bearings

 7-8 Bearing Materials and Surface Finish

 7-9 Mounting of Bail Bearings

 7-10 Permissible Misaiignment

 7-11 Relative Advantages of Rolling Element Bearings

 7-12 Roller Bearings

 7-13 Contact Stress between Spheres and Cylinders

 References

 Problems

CHAPTER 8 SPUR GEARS

 8-1 Introduction

 8-2 Load on Gear Tooth from Power Transmitted

 8-3 Determination of Beating Loads

 8-4 Materials for Gears

 8-5 Lubrication and Mounting of Gears

 8-6 Design of Gears to Prevent Failures

 References

 Problems

CHAPTER 9  HELICAL, BEVEL, AND WORM GEARS

 9-1 Helical Gears

 9-2 Tooth Loads of Helical Gears

 9-3 Design of Parallel Shaft Helical Gears to Prevent Failures

 9-4 Loads on Bevel Gears

 9-5 Design of Bevel Gears to Prevent Failures

 9-6 Forces in Worm Gear Sets

 9-7 Design of Worm Gear Sets

 References

 Problems

APPENDIX

中英文词汇对照表

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