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THOUSANDS OF DRAWINGS AND DESCRIPTIONS COVER INNOVATIONS IN MECHANICAL ENGINEERING
Fully revised throughout, this abundantly illustrated reference describes proven mechanisms and mechanical devices. Each illustration represents a design concept that can easily be recycled for use in new or modified mechanical, electromechanical, or mechatronic products. Tutorials on the basics of mechanisms and motion control systems introduce you to those subjects or act as a refresher.
Mechanisms and Mechanical Devices Sourcebook, Fifth Edition, contains new chapters on mechanisms for converting renewable energy into electrical power, 3D digital prototyping and simulation, and progress in MEMS and nanotechnology based on carbon nanotubes. A new chapter on stationary and mobile robots describes their roles in industry, science, national defense, and medicine. The latest advances in rapid prototyping are also discussed. This practical guide will get you up to speed on many classical mechanical devices as well as the hot new topics in mechanical engineering.
COMPREHENSIVE INDEX MAKES IT EASY TO FIND SUBJECTS OF INTEREST
GLOSSARIES OF TERMS ON: CAMS, GEARS, MECHANICS, MOTION CONTROL, ROBOTICS, WIND TURBINES, PUMPS, AND 3D DIGITAL PROTOTYPING AND SIMULATION
COVERAGE OF MOBILE ROBOTS THAT EXPLORE MARS, PERFORM MILITARY DUTIES AND PUBLIC SERVICE, HANDLE AUTOMATED DELIVERY, CONDUCT SURVEILLANCE FROM THE AIR, AND SEARCH UNDER THE SEA
DETAILS ON THE MECHANISMS IN RENEWABLE-ENERGY AND WIND-TURBINE AND SOLAR-THERMAL FARMS AND WAVE-MOTION POWER PLANTS
Mechanisms and Mechanical Devices Sourcebook, Fifth Edition, covers:
Basics of mechanisms * Motion control systems * New stationary and mobile robots * New mechanisms for renewable power generation * Drives and mechanisms with linkages, gears, cams, genevas, and ratchets * Clutches and brakes * Latching, fastening, and clamping devices and mechanisms * Chains, belts, springs, and screws * Shaft couplings and connections * Motion-specific devices * Packaging, conveying, handling, and safety mechanisms and machines * Torque, speed, tension, and limit control systems * Instruments and controls: pneumatic, hydraulic, electric, and electronic * New 3D digital prototyping and simulation techniques * New rapid prototyping methods * New directions in mechanical engineering
|Publisher:||McGraw-Hill Professional Publishing|
|Edition description:||New Edition|
|Product dimensions:||8.58(w) x 10.96(h) x 1.30(d)|
About the Author
Neil Sclater switched his career from engineering in the military/aerospace industry to writing and editing in the field of electromechanical and electronic technology. After years as a staff editor for engineering magazines, he set up his own consulting firm in technical communications. Mr. Sclater contributed hundreds of articles to various engineering publications. He has authored or co-authored 11 McGraw-Hill Professional books, including two earlier editions of this book.
Table of Contents
Chapter 1. Basics of Mechanisms
Chapter 2. Motion Control Systems
Chapter 3. Stationary and Mobile Robots
Chapter 4. Mechanisms for Renewable Power Generation
Chapter 5. Linkages: Drives and Mechanisms
Chapter 6. Gears: Devices, Drives, and Mechanisms
Chapter 7. CAM, Geneva, and Ratchet Drives and Mechanisms
Chapter 8. Clutches and Brakes
Chapter 9. Latching, Fastening, and Clamping Devices and Mechanisms
Chapter 10. Chain and Belt Devices and Mechanisms
Chapter 11. Spring and Screw Devices and Mechanisms
Chapter 12. Shaft Couplings and Connections
Chapter 13. Motion-Specific Devices, Mechanisms, and Machines
Chapter 14. Packaging, Conveying, Handling, and Safety Mechanisms and Machines
Chapter 15. Torque, Speed, Tension, and Limit Control Systems
Chapter 16. Instruments and Controls: Pneumatic, Hydraulic, Electric, and Electronic
Chapter 17. 3D Digital Prototypes and Simulation
Chapter 18. Rapid Prototyping
Chapter 19. New Directions in Mechanical Engineering
Nevertheless, the many diagrams of mechanisms and mechanical devices along with the descriptions of how they work will be attractive to anyone with an interest in mechanical objects who enjoys browsing through well-illustrated books for ideas, inspiration, or pleasure.
As was true of the first edition, emphasis has been placed on mechanical designs with universal applications. Most of the information in this book cannot be found either in textbooks or standard handbooks of machine design and mechanical engineering. Because the book includes drawings and descriptions of so many crucial designs and concepts that have emerged over hundreds of years, it provides a historical record of man's progress in the mechanical arts. 'Me book also includes diagrams and descriptions of higher-order systems that have evolved from those simple mechanisms and devices, but they are now likely to be combined with hydraulic or pneumatic systems and electrical or electronic circuits.
While notintended as a textbook, this sourcebook contains a lot of practical design tips and equations that are difficult to find elsewhere. It assumes that the reader is familiar with common mechanical terminology gained either from practical experience or formal training, or both. This book developed out of Nicholas Chironis's belief that the mass-circulation mechanical engineering magazines contain vast amounts of practical information that will be lost if they are not collected in a single volume because of the difficulties in storing and retrieving articles months or years after publication. Mr. Chironis selected articles from many different sources over many years that, in his opinion, were both well illustrated and offered practical design information of long-term value not found in the more conventional engineering books.
In revising the first edition, the text and illustrations were carefully reviewed and edited. Many of the articles that appeared there were discarded because they no longer represent the most cost-effective and efficient design solutions or they discussed products or projects that are now obsolete. Their deletion left room for newer, more informative articles. Illustrations that were unclear were redrawn or deleted, and the text was uniformly edited to conform to current editorial practice. However, there was no change in the original concept of the book. The new articles discuss design trends and directions that have emerged since the first edition was published.
The origins of many of the devices and mechanisms iscusse an back to the Greek and Roman civilizations. Others can be traced only to the Renaissance or the industrial revolution, but many have taken on the status of classics. Such significant inventions as the water pump, the mechanical clock, the cotton gin, and the steam engine owe their existence to each inventor's ability to seek out and integrate classical mechanical concepts into new ways to accomplish practical objectives.
Few, if any, of the inventors of the past worked in a vacuum; most had access to the designs and descriptions of their predecessors. Even the inventive geniuses of the past owe a debt of gratitude to those earlier and often anonymous inventors. Many of the "building block" inventions on which our modern technological civilization rests are the work of unknown artisans, millwrights, instrument makers, and mechanics who, over the centuries, made improvements or changes in even earlier designs and left sketches, descriptions, and even working models as their legacy.
When the "building blocks" of the past are integrated by creative and imaginative minds, they become sophisticated inventions whose functions and utility far exceed the sum of their parts. One need only to look to such watershed inventions of this century-thc airplane, the helicopter, the jet engine, and the satellite, to mention a few-to verify this observation.
Some have said that the age of mechanical invention is over, and that from now on the really significant inventions will be in electronics, communications, and computers. They point to the demise of such outstanding mechanical inventions of their day as the typewriter, mechanical clock, cash register, and calculator. However, anyone making that assertion would have failed to recognize the importance of mechanical devices and mechanisms in today's wonder products which are more recognizable as computer systems, communications apparatus, or home entertainment products than machines.
Some of the outstanding recent examples of machine design (combined with other technologies) include antilock brakes, the videocassette recorder, the laser printer, and the computer hard-disk memory drive. Close examination of these products reveals new applications for gears, racks, pinions, splines, cams, leadscrews, springs, and other mechanical components.
Yet another example of the growing interdependence of technologies that have emerged in the last quarter century is the industrial robot. It has integrated the accumulated knowledge base of machine design, electrical motors, hydraulics, pneumatics, electronics, and computer science. Today's inventor must be well versed in all of these specialties.
Another factor that has changed machine design is materials. Historically the traditional materials for building machines have been iron, steel, copper, brass, and aluminum. But changes have been driven by the twin demands of improved producibility and cost savings. In addition, new concepts have called for new materials. Plastics and composites have displaced the more traditional materials; such exotic materials as silicon, titanium, and even superconductive alloys are gaining in importance.
The media have made much of the changing scale of products. Designs for 500-passenger aircraft are being evaluated while 100,000-ton cruise ships that can accommodate 5,000 passengers are under consideration. By contrast, some mechanisms have shrunk to microscopic dimensions. Microactuators and microsensors smaller than pinheads are now in production. These products, best seen only under microscopes, have exploited proven semiconductor photolithographic processes.
Today, designers continue to learn from the kinds of illustrations in this book. No doubt videocassettes and CD-ROMs will replace many live instructors and textbooks in the future, but it is unlikely that "hard drawings" or pencil sketches will ever disappear. Engineering workstations and 3-D graphics have already revolutionized the practice of drafting and made the drawing board obsolete. Ink jets have replaced pens in producing large drawings, and laser and ink-jet printers are making smaller ones.
The computer has revolutionized mathematical computation, stress and thermal analysis, and simulation. It has also made possible rapid prototyping and the manufacture of micrometer-scale sensors and machines. While computers will continue to usurp many of the traditional duties of machines and mechanisms in aircraft, ships, cars, the factory, and even the home, the basic mechanisms will never become obsolete.
More than 500 years ago Leonardo da Vinci produced engineering drawings and sketches that have stood the test of time both as technology and art. They remind us that not all of the concepts dreamed up by forward-looking geniuses can be realized during their lifetimes. Hundreds of years passed and new materials and processes had to be developed before many of da Vinci's brilliant ideas could become practical realities. But without the printed page those ideas would have been lost to posterity.
This editor gratefully acknowledges the permission granted by the staff of NASA Tech Briefs magazine to reprint some of its recent articles on mechanics and machinery. These articles were selected on a basis of their applications beyond the immediate needs of America's space program. The names of their inventors and the NASA facilities where the work was performed have been retained in each article. Readers wishing to know more about these developments can write directly to the NASA centers stated in the articles for a technical support package (TSP) that will provide additional information on the concepts or inventions described.