EBOOK - Mechanisms and Mechanical devices sourcebook 5th (Neil Sclater)

EBOOK - Tài liệu về cơ học và thiết bị cơ khí - Tác giả: Neil Sclater (561 Trang).

This is the fifth edition of a one-of-a-kind engineering reference book covering the past, present, and future of mechanisms and mechanical devices. It includes clear illustrations and straightforward descriptions of specific subjects rather than the theory and mathematics found in most engineering textbooks. You will find that this book contains hundreds of detailed line drawings that will hold your interest regardless of your background in mechanical engineering. The text accompanying the illustrations is intended to help you to understand the basic concepts of subjects that may or may not be familiar to you.
You will find drawings and illustrations that are simply interesting and informative and perhaps others that could spur your creativity and prompt you to recycle them into your new designs or redesigns. They may offer solutions you had not previously considered because they were not visible inside contemporary products unless the product is disassembled. Solid state electronics and computer circuitry have displaced many earlier mechanical solutions, no doubt improving product reliability and efficiency while reducing their price.
Nevertheless, many of those displaced mechanical components have lives of their own and may very well turn up in other products in different form performing different functions after undergoing dimensional and material transformations. Classical, proven mechanisms and mechanical devices may seem to disappear only to reappear in other forms and applications. Anyone who believes that all mechanisms will be replaced by electronics need only examine the sophistication of the latest self-winding mechanical watches, digital cameras, gyro-stabilized vehicles, and navigational systems.
This book illustrates the ongoing importance of classical mechanical devices as well as the latest mechatronic devices formed by the merger between mechanics and electronics.
It is a must addition to your personal technical library, and it offers you a satisfying way to “get up to speed” on new subjects or those you may have studied in the past but have now faded from your memory. Moreover, it is hoped that this book will encourage you to refresh your knowledge of these and other topics that interest you by accessing the many related Web sites on the Internet.

CHAPTER 1 BASICS OF MECHANISMS 1
Introduction 2
Physical Principles 2
Efficiency of Machines 2
Mechanical Advantage 2
Velocity Ratio  3
Inclined Plane 3
Pulley Systems 3
Screw-Type Jack 4
Levers and Mechanisms 4
Levers 4
Winches, Windlasses, and Capstans  5
Linkages 5
Simple Planar Linkages 5
Specialized Linkages 6
Straight-Line Generators 7
Rotary/Linear Linkages 8
Specialized Mechanisms 9
Gears and Gearing 10
Simple Gear Trains 11
Compound Gear Trains 11
Gear Classification  11
Practical Gear Configurations 12
Gear Tooth Geometry 13
Gear Terminology 13
Gear Dynamics Terminology 13
Pulleys and Belts  14
Sprockets and Chains 14
Cam Mechanisms  14
Classification of Cam Mechanisms 15
Cam Terminology 17
Clutch Mechanisms 17
Externally Controlled Friction Clutches  17
Externally Controlled Positive Clutches 17
Internally Controlled Clutches 18
Glossary of Common Mechanical Terms 18

CHAPTER 2 MOTION CONTROL SYSTEMS 21
Motion Control Systems Overview 22
Glossary of Motion Control Terms 28
Mechanical Components Form Specialized Motion-Control Systems 29
Servomotors, Stepper Motors, and Actuators for Motion Control 30
Servosystem Feedback Sensors 38
Solenoids and Their Applications 45


CHAPTER 3 STATIONARY AND MOBILE ROBOTS 49
Introduction to Robots 50
The Robot Defined 50
Stationary Autonomous Industrial Robots 50
Some Robot History 51
The Worldwide Robot Market 51
Industrial Robots 51
Industrial Robot Advantages 52
Industrial Robot Characteristics 53
Industrial Robot Geometry 53
Four Different ABB Industrial Robots 56
IRB 2400 57
IRB 6400RF 57
IRB 6640 57
IRB 7600 57
Autonomous and Semiautonomous Mobile Robots 58
Options for Communication and Control 58
Land-based Mobile Robots Can Scout and Retrieve 58
Submersible Mobile Robots Can Search and Explore 58
Robotic Aircraft (Drones) Can Search and Destroy 58
Planetary Exploration Robots Can Examine and Report 59
Laboratory/Scientific Robots Can Mimic Human Behavior 59
Commercial Robots Can Deliver and Retrieve Goods 59
Consumer Robots Clean Floors and Mow Lawns 59
Some Robots Entertain or Educate 59
Seven Mobile Autonomous and Semiautonomous Robots 60
Two Robots Have Explored Mars for Six Years 60
This Robot Will Carry on the Work of Spirit and Opportunity 61
This Robot Responds to Civil Emergencies 62
Robot Delivers Hospital Supplies 62
A Military Remotely-Piloted Aircraft Can Observe and Attack the Enemy 63
Submarine Robot Searches for Underwater Mines and Obstructions 64
This System Offers Less Intrusive Surgery and Faster Recovery 65
Glossary of Robotic Terms 66
Modified Four-Limbed Robot Is a Better Climber 68
Six-Legged Robot Crawls on Mesh in Lunar Gravity 69
Two Robots Anchor Another Traversing Steep Slopes 70
Six-Legged Robot Can Be Steered While Hopping 71

CHAPTER 4 MECHANISMS FOR RENEWABLE POWER GENERATION 73
Overview of Renewable Energy Sources 74
Nuclear: The Unlikely Prime Renewable 74
Alternative Renewable Energy Sources 75
Baseload and Baseload Demand Power Plants 75
Windmills: Early Renewable Power Sources 75
Wind Turbines: Descendents of Windmills 76
Where Are Wind Turbines Located? 77
Concentrating Solar Thermal (CST) Systems 78
Parabolic Trough Mirror Solar Thermal (CST) Plants  78
Power-Tower Solar Thermal (CST) Plants 79
Linear Fresnel Reflector Thermal (CST) Plants 80
Parabolic Dish Stirling Solar Thermal (CST) Plants 81
How a Stirling Engine Works 82
The Outlook for CST Renewable Energy  83
Harnessing Moving-Water Power 84
Tidal Electric Power Generation  84
Ocean-Wave Power Generation 84
Another Possible Mechanical Hydropower Solution 84
The Relative Costs of Renewable Energy 85
Glossary of Wind Turbine Terms 86
Renewable Energy Resources 87

CHAPTER 5 LINKAGES: DRIVES AND MECHANISMS 89
Four-Bar Linkages and Typical Industrial Applications 90
Seven Linkages for Transport Mechanisms 92
Five Linkages for Straight-Line Motion 95
Six Expanding and Contracting Linkages 97
Four Linkages for Different Motions  98
Nine Linkages for Accelerating and Decelerating Linear Motions 99
Twelve Linkages for Multiplying Short Motions 101
Four Parallel-Link Mechanisms 103
Seven Stroke Multiplier Linkages 103
Nine Force and Stroke Multiplier Linkages 105
Eighteen Variations of Differential Linkage 107
Four-Bar Space Mechanisms 109
Seven Three-Dimensional Linkage Drives 111
Thirteen Different Toggle Linkage Applications 116
Hinged Links and Torsion Bushings Soft-Start Drives 118
Eight Linkages for Band Clutches and Brakes 119
Design of Crank-and-Rocker Links for Optimum Force Transmission 121
Design of Four-Bar Linkages for Angular Motion 124
Multibar Linkages for Curvilinear Motions 125
Roberts’ Law Helps to Design Alternate Four-Bar Linkages 128
Design of Slider-Crank Mechanisms 129
CHAPTER 6 GEARS: DEVICES, DRIVES, AND MECHANISMS 131
Gears and Eccentric Disk Provide Quick Indexing 132
Odd-Shaped Planetary Gears Smooth Stop and Go 133
Cycloid Gear Mechanism Controls Pump Stroke 136
Gears Convert Rotary-to-Linear Motion 137
.....

LINK DOWNLOAD

EBOOK - Tài liệu về cơ học và thiết bị cơ khí - Tác giả: Neil Sclater (561 Trang).

This is the fifth edition of a one-of-a-kind engineering reference book covering the past, present, and future of mechanisms and mechanical devices. It includes clear illustrations and straightforward descriptions of specific subjects rather than the theory and mathematics found in most engineering textbooks. You will find that this book contains hundreds of detailed line drawings that will hold your interest regardless of your background in mechanical engineering. The text accompanying the illustrations is intended to help you to understand the basic concepts of subjects that may or may not be familiar to you.
You will find drawings and illustrations that are simply interesting and informative and perhaps others that could spur your creativity and prompt you to recycle them into your new designs or redesigns. They may offer solutions you had not previously considered because they were not visible inside contemporary products unless the product is disassembled. Solid state electronics and computer circuitry have displaced many earlier mechanical solutions, no doubt improving product reliability and efficiency while reducing their price.
Nevertheless, many of those displaced mechanical components have lives of their own and may very well turn up in other products in different form performing different functions after undergoing dimensional and material transformations. Classical, proven mechanisms and mechanical devices may seem to disappear only to reappear in other forms and applications. Anyone who believes that all mechanisms will be replaced by electronics need only examine the sophistication of the latest self-winding mechanical watches, digital cameras, gyro-stabilized vehicles, and navigational systems.
This book illustrates the ongoing importance of classical mechanical devices as well as the latest mechatronic devices formed by the merger between mechanics and electronics.
It is a must addition to your personal technical library, and it offers you a satisfying way to “get up to speed” on new subjects or those you may have studied in the past but have now faded from your memory. Moreover, it is hoped that this book will encourage you to refresh your knowledge of these and other topics that interest you by accessing the many related Web sites on the Internet.

CHAPTER 1 BASICS OF MECHANISMS 1
Introduction 2
Physical Principles 2
Efficiency of Machines 2
Mechanical Advantage 2
Velocity Ratio  3
Inclined Plane 3
Pulley Systems 3
Screw-Type Jack 4
Levers and Mechanisms 4
Levers 4
Winches, Windlasses, and Capstans  5
Linkages 5
Simple Planar Linkages 5
Specialized Linkages 6
Straight-Line Generators 7
Rotary/Linear Linkages 8
Specialized Mechanisms 9
Gears and Gearing 10
Simple Gear Trains 11
Compound Gear Trains 11
Gear Classification  11
Practical Gear Configurations 12
Gear Tooth Geometry 13
Gear Terminology 13
Gear Dynamics Terminology 13
Pulleys and Belts  14
Sprockets and Chains 14
Cam Mechanisms  14
Classification of Cam Mechanisms 15
Cam Terminology 17
Clutch Mechanisms 17
Externally Controlled Friction Clutches  17
Externally Controlled Positive Clutches 17
Internally Controlled Clutches 18
Glossary of Common Mechanical Terms 18

CHAPTER 2 MOTION CONTROL SYSTEMS 21
Motion Control Systems Overview 22
Glossary of Motion Control Terms 28
Mechanical Components Form Specialized Motion-Control Systems 29
Servomotors, Stepper Motors, and Actuators for Motion Control 30
Servosystem Feedback Sensors 38
Solenoids and Their Applications 45


CHAPTER 3 STATIONARY AND MOBILE ROBOTS 49
Introduction to Robots 50
The Robot Defined 50
Stationary Autonomous Industrial Robots 50
Some Robot History 51
The Worldwide Robot Market 51
Industrial Robots 51
Industrial Robot Advantages 52
Industrial Robot Characteristics 53
Industrial Robot Geometry 53
Four Different ABB Industrial Robots 56
IRB 2400 57
IRB 6400RF 57
IRB 6640 57
IRB 7600 57
Autonomous and Semiautonomous Mobile Robots 58
Options for Communication and Control 58
Land-based Mobile Robots Can Scout and Retrieve 58
Submersible Mobile Robots Can Search and Explore 58
Robotic Aircraft (Drones) Can Search and Destroy 58
Planetary Exploration Robots Can Examine and Report 59
Laboratory/Scientific Robots Can Mimic Human Behavior 59
Commercial Robots Can Deliver and Retrieve Goods 59
Consumer Robots Clean Floors and Mow Lawns 59
Some Robots Entertain or Educate 59
Seven Mobile Autonomous and Semiautonomous Robots 60
Two Robots Have Explored Mars for Six Years 60
This Robot Will Carry on the Work of Spirit and Opportunity 61
This Robot Responds to Civil Emergencies 62
Robot Delivers Hospital Supplies 62
A Military Remotely-Piloted Aircraft Can Observe and Attack the Enemy 63
Submarine Robot Searches for Underwater Mines and Obstructions 64
This System Offers Less Intrusive Surgery and Faster Recovery 65
Glossary of Robotic Terms 66
Modified Four-Limbed Robot Is a Better Climber 68
Six-Legged Robot Crawls on Mesh in Lunar Gravity 69
Two Robots Anchor Another Traversing Steep Slopes 70
Six-Legged Robot Can Be Steered While Hopping 71

CHAPTER 4 MECHANISMS FOR RENEWABLE POWER GENERATION 73
Overview of Renewable Energy Sources 74
Nuclear: The Unlikely Prime Renewable 74
Alternative Renewable Energy Sources 75
Baseload and Baseload Demand Power Plants 75
Windmills: Early Renewable Power Sources 75
Wind Turbines: Descendents of Windmills 76
Where Are Wind Turbines Located? 77
Concentrating Solar Thermal (CST) Systems 78
Parabolic Trough Mirror Solar Thermal (CST) Plants  78
Power-Tower Solar Thermal (CST) Plants 79
Linear Fresnel Reflector Thermal (CST) Plants 80
Parabolic Dish Stirling Solar Thermal (CST) Plants 81
How a Stirling Engine Works 82
The Outlook for CST Renewable Energy  83
Harnessing Moving-Water Power 84
Tidal Electric Power Generation  84
Ocean-Wave Power Generation 84
Another Possible Mechanical Hydropower Solution 84
The Relative Costs of Renewable Energy 85
Glossary of Wind Turbine Terms 86
Renewable Energy Resources 87

CHAPTER 5 LINKAGES: DRIVES AND MECHANISMS 89
Four-Bar Linkages and Typical Industrial Applications 90
Seven Linkages for Transport Mechanisms 92
Five Linkages for Straight-Line Motion 95
Six Expanding and Contracting Linkages 97
Four Linkages for Different Motions  98
Nine Linkages for Accelerating and Decelerating Linear Motions 99
Twelve Linkages for Multiplying Short Motions 101
Four Parallel-Link Mechanisms 103
Seven Stroke Multiplier Linkages 103
Nine Force and Stroke Multiplier Linkages 105
Eighteen Variations of Differential Linkage 107
Four-Bar Space Mechanisms 109
Seven Three-Dimensional Linkage Drives 111
Thirteen Different Toggle Linkage Applications 116
Hinged Links and Torsion Bushings Soft-Start Drives 118
Eight Linkages for Band Clutches and Brakes 119
Design of Crank-and-Rocker Links for Optimum Force Transmission 121
Design of Four-Bar Linkages for Angular Motion 124
Multibar Linkages for Curvilinear Motions 125
Roberts’ Law Helps to Design Alternate Four-Bar Linkages 128
Design of Slider-Crank Mechanisms 129
CHAPTER 6 GEARS: DEVICES, DRIVES, AND MECHANISMS 131
Gears and Eccentric Disk Provide Quick Indexing 132
Odd-Shaped Planetary Gears Smooth Stop and Go 133
Cycloid Gear Mechanism Controls Pump Stroke 136
Gears Convert Rotary-to-Linear Motion 137
.....

LINK DOWNLOAD

Chuyên mục: C. Bài giảng C. Bài giảng chuyên ngành Cơ khí - Chế tạo máy (Mechanical & Manufacturing Engineering) C. Bài giảng kỹ thuật