tailieunhanh - Bearing Design in Machinery - Phần 1

Moving parts in machinery involve relative sliding or rolling motion. Examples of relative motion are linear sliding motion, such as in machine tools, and rotation motion, such as in motor vehicle wheels. Most bearings are used to support rotating shafts in machines. Rubbing of two bodies that are loaded by a normal force (in the direction normal to the contact area) generates energy losses by friction and wear. Appropriate bearing design can minimize friction and wear as well as early failure of machinery. | ISBN 0-8247-0703-6 This book is printed on acid-free paper. Headquarters Marcel Dekker Inc. 270 Madison Avenue New York NY 10016 tel 212-696-9000 fax 212-685-4540 Eastern Hemisphere Distribution Hutgasse 4 Postfach 812 CH-4001 Basel Switzerland tel 41-61-260-6300 fax 41-61-260-6333 World Wide Web http com The publisher offers discounts on this book when ordered in bulk quantities. For more information write to Special Sales Professional Marketing at the headquarters address above. Copyright 2003 by Marcel Dekker Inc. All Rights Reserved. Neither this book nor any part may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying microfilming and recording or by any information storage and retrieval system without permission in writing from the publisher. Current printing last digit 10 987654321 PRINTED IN THE UNITED STATES OF AMERICA Copyright 2003 by Marcel Dekker Inc. All Rights Reserved. To Renana Amir and Alon Copyright 2003 by Marcel Dekker Inc. All Rights Reserved. Preface Most engineering schools offer senior courses in bearing design in machinery. These courses are offered under various titles such as Tribology Bearings and Bearing Lubrication and Advanced Machine Design. This book is intended for use as a textbook for these and similar courses for undergraduate students and for self-study by engineers involved in design maintenance and development of machinery. The text includes many examples of problems directly related to important design cases which are often encountered by engineers. In addition students will find this book useful as a reference for design projects and machine design courses. Engineers have already realized that there is a need for a basic course and a textbook for undergraduate students that does not focus on only one bearing type such as a hydrodynamic bearing or a rolling-element bearing but presents the big picture an overview of all bearing types. This course should cover .