Guide to the Use of Tables and Formulas in Machinery’s ...

Guide to Machinery's Handbook 27th Edition

Guide to the Use of Tables and Formulas in

Machinery's Handbook 27th Edition

BY JOHN M. AMISS, FRANKLIN D. JONES, AND HENRY H. RYFFEL

CHRISTOPHER J. MCCAULEY, EDITOR RICCARDO HEALD, ASSOCIATE EDITOR MUHAMMED IQBAL HUSSAIN, ASSOCIATE EDITOR

2004 INDUSTRIAL PRESS INC.

NEW YORK

Copyright 2004, Industrial Press, Inc., New York, NY

Guide to Machinery's Handbook 27th Edition

COPYRIGHT 1931, 1939, 1951, 1954, ? 1959, ? 1964, ? 1968, ? 1971,? 1975, ? 1980, ? 1984, ? 1988, ? 1992, ? 1996, ? 2000, ? 2004 by Industrial Press Inc., New York, NY.

Library of Congress Cataloging-in-Publication Data

Amiss, John Milton, 1887-1968

Guide to the use of tables and formulas in Machinery's Handbook, 27th edition by John M. Amiss, Franklin D. Jones, and Henry H. Ryffel; Christopher J. McCauley, editor; Riccardo Heald, associate editor; Muhammed Iqbal Hussain, associate editor.

264 p. 12.1 ? 17.8 cm. Cover title: Machinery's handbook 27th guide.

Cover title: Machinery's handbook twenty seventh guide. This book should be used in conjunction with the twenty-seventh edition of Machinery's Handbook.

ISBN 0-8311-2799-6 ISBN 0-8311-2788-0 (electronic edition with math)

1. Mechanical engineering--Handbook, manuals, etc. I. Title: Machinery's handbook 27 guide. II. Machinery's handbook twenty seventh guide. III Jones, Franklin Day, 1879-1967 IV. Ryffel, Henry H. I920- V. McCauley, Christopher J. VI. Heald, Riccardo VII. Hussain, Muhammed Iqbal VIII. Machinery's Handbook. 27th edition. IX. Title.

TJ151.A445 2000 621.8'0212?dc 21

00-038881

INDUSTRIAL PRESS, INC. 200 Madison Avenue

New York, New York 10016-4078

MACHINERY'S HANDBOOK GUIDE 27th Edition First Printing

Printed and bound in the United States of America by National Publishing Company, Philadelphia, Pa.

All rights reserved. This book or parts thereof may not be reproduced, stored in a retrieval system, or transmitted in any form without permission of the publishers.

Copyright 2004, Industrial Press, Inc., New York, NY

Guide to Machinery's Handbook 27th Edition

THE PURPOSE OF THIS BOOK An engineering handbook is an essential part of the equipment of practically all engineers, machine designers, draftsmen, tool engineers and skilled mechanics in machine shops and toolrooms. The daily use of such a book, with its various tables and general data, saves a lot of time and labor. To obtain the full value of any handbook, however, the user must know enough about the contents to apply the tables, formulas, and other data, whenever they can be used to advantage. One purpose of this Guide, which is based on MACHINERY'S HANDBOOK, is to show by examples, solutions, and test questions typical applications of handbook information in both drafting rooms and machine shops. Another function is to familiarize engineering students or other users with the HANDBOOK'S contents. A third objective is to provide test questions and drill work that will enable the HANDBOOK user, through practice, to obtain the required information quickly and easily. MACHINERY'S HANDBOOK, as with all other handbooks, presents information in condensed form so that a large variety of subjects can be covered in a single volume. Because of this condensed treatment, any engineering handbook must be primarily a work of reference rather than a textbook, and the practical application of some parts will not always be apparent, especially to those who have had little experience in engineering work. The questions and examples in this book are intended not only to supplement some of the HANDBOOK material, but also to stimulate interest both in those parts that are used frequently and in the more special sections that may be very valuable even though seldom required.

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Copyright 2004, Industrial Press, Inc., New York, NY

Guide to Machinery's Handbook 27th Edition

THE METRIC SYSTEM

MACHINERY'S HANDBOOK contains a considerable amount of metric material in terms of texts, tables, and formulas. This material is included because much of the world now uses the metric system, also known as the Syst?me International (SI), and the movement in that direction continues in all countries that intend to compete in the international marketplace, including the United States.

An explanation of the SI metric system is found on Handbook pages 142 to 144 and 2544 to 2548. A brief history is given of the development of this system, and a description is provided for each of its seven basic units. Factors and prefixes for forming decimal multiples and submultiples of the SI units also are shown. Another table lists SI units with complex names and provides symbols for them.

Tables of SI units and conversion factors appear on pages 2549 through 2587. Factors are provided for converting English units to metric units, or vice versa, and cover units of length, area, volume (including capacity), velocity, acceleration, flow, mass, density, force, force per unit length, bending moment or torque, moment of inertia, section modulus, momentum, pressure, stress, energy, work, power, and viscosity. By using the factors in these tables, it is a simple matter of multiplication to convert from one system of units to the other. Where the conversion factors are exact, they are given to only 3 or 4 significant figures, but where they are not exact they are given to 7 significant figures to permit the maximum degree of accuracy to be obtained that is ordinarily required in the metalworking field.

To avoid the need to use some of the conversion factors, various conversion tables are given on pages 2550 through 2579. The tables for length conversion on pages 2550 to 2562 will probably be the most frequently used. Two different types of tables are shown. The two tables on page 2553 facilitate converting lengths

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Copyright 2004, Industrial Press, Inc., New York, NY

Guide to Machinery's Handbook 27th Edition

ix

up to 100 inches into millimeters, in steps of one ten-thousandth of an inch; and up to 1000 millimeters to inches, in steps of a thousandth of a millimeter.

The table starting on page 2554 enables converting fractions and mixed number lengths up to 41 inches into millimeters, in steps of one sixty-fourth of an inch.

To make possible such a wide range in a compact table, the reader often must take two or more numbers from the table and add them together, as is explained in the accompanying text. The tables starting on page 2556 and 2558 have a much more limited range of conversion for inches to millimeters and millimeters to inches. However, these table have the advantage of being direct-reading; that is, only a single value is taken from the table, and no addition is required.

For those who are engaged in design work where it is necessary to do computations in the fields of mechanics and strength of materials, a considerable amount of guidance will be found for the use of metric units. Thus, beginning on Handbook page 141, the use of the metric SI system in mechanics calculations is explained in detail. In succeeding pages, boldface type is used to highlight references to metric units in the combined Mechanics and Strength of Materials section. Metric formulas are provided also, to parallel the formulas for English units.

As another example, on page 213, it is explained in boldface type that SI metric units can be applied in the calculations in place of the English units of measurement without changes to the formulas for simple stresses.

The reader also should be aware that certain tables in the Handbook, such as that on page 71, which gives values for segments of circles for a radius = 1, can be used for either English or metric units, as is indicated directly under the table heading. There are other instances, however, where separate tables are needed, such as are shown on pages 1018 to 1021 for the conversion of revolutions per minute, into cutting speed in feet per minute on pages 1018 and 1019, and into cutting speed in meters per minute on pages 1020 and 1021.

Copyright 2004, Industrial Press, Inc., New York, NY

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