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Newnes Mechanical Engineer's Pocket Book PDF

590 Pages·1990·18.67 MB·English
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Newnes Mechanical Engineer's Pocket Book Roger Timings and Tony May ($) Newnes Newnes An imprint of Butterworth-Heinemann Linacre House, Jordan Hill, Oxford 0X2 8DP A division of Reed Educational and Professional Publishing Ltd '£s^ A member of the Reed Elsevier pic group OXFORD BOSTON JOHANNESBURG MELBOURNE NEW DELHI SINGAPORE First published 1990 Reprinted 1992, 1993,1995 (twice), 1997 © Roger Timings and Tony May 1990 All rights reserved. No part of this publication may be reproduced in any material form (including photocopying or storing in any medium by electronic means and whether or not transiently or incidentally to some other use of this publication) without the written permission of the copyright holder except in accordance with the provisions of the Copyright, Designs and Patents Act 1988 or under the terms of a licence issued by the Copyright Licensing Agency Ltd, 90 Tottenham Court Road, London, England Wl P 9HE. Application for the copyright holder's written permission to reproduce any part of this publication should be addressed to the publishers British Library Cataloguing in Publication Data Timings, Roger Newnes mechanical engineer's pocket book 1. Mechanical engineering I. Title II. May, Tony 621 ISBN 0 7506 0919 2 Printed and bound in Great Britain by the Bath Press, Bath Preface This pocket book has been prepared as an aid to mechanical engineers engaged in design and manufacture, together with others who require a quick, day-to-day reference for useful workshop information. For easy reference this book is divided into five main parts, namely: 1 Engineering Mathematics and Science 2 Engineering Design Data 3 Engineering Materials 4 Computer Aided Engineering 5 Cutting Tools In turn, these five main sections have been subdivided into main topic areas. For example: part 2, Engineering Design Data, has been subdivided into the following topic areas: 2.1 Screwed fastenings 2.2 Riveted joints; 2.3 Self-secured joints; 2.4 Miscellaneous fasteners 2.5 Power transmission: gears 2.6 Power transmission: belt drives 2.7 Power transmission: shafts Within these subsections, the material has been assembled in a logical sequence for easy reference and a comprehensive list of contents has been provided which leads the reader directly to the item required. This pocket book is not a textbook but is a compilation of useful data. The authors are indebted to the British Standards Institution and to all the industrial and commercial companies in the UK and abroad who have cooperated in providing up-to- date data in so many technical areas. Unfortunately, limitation of space has allowed only abstracts to be included from the wealth of material provided. Therefore, the reader is strongly recommended to consult the complete standard, industrial manual or catalogue after an initial perusal of the tables of data found in this book. To this end, an appendix is provided listing the names and addresses of libraries, institutions and companies where the complete standards, manuals and catalogues may be consulted or purchased. Many industrial manuals and catalogues are available free of charge to bona fide users. The section on computer aided engineering is only a very brief introduction to a very complex and broadly-based area of engineering. It is intended to follow up this section with a series of pocket books specializing in such topic areas as computer numerical control, computer aided design, industrial robotics and programmable logic controllers. Finally it is intended, within the restraints of commercial viability, to produce new and updated editions of this book from time to time. Therefore, the authors would appreciate (via the publishers) suggestions from the users of this book for additions or deletions to be taken into account when producing new editions. Roger Timings Tony May xvni Acknowledgements We would like to thank all the companies who have kindly given permission for their material to be used: Continental Gummi-Werke AG (sections 2.6.4-2.6.14); David Brown Gears Ltd (section 2.5.1); National Broach & Machine Co (sections 2.5.8-2.5.15); Sandvik Coromant UK (sections 5.5.1-5.5.16); Tucker Fasteners (section 2.2.8). We are also grateful to Hodder and Stoughton for allowing us to reproduce material from Higgins, R.A., Properties of Materials in sections 3.2.2., 3.2.3., 3.2.5-3.2.7 and 3.2.13 and to Longman for permission to reproduce material from Timings, R. Materials Technology Level 2 and Materials Technology Level 3 in sections 3.1.1.-3.1.21. Extracts from British Standards are reproduced with permission of BSI. Complete copies of the documents can be obtained by post from BSI Sales, Linford Wood Milton Keynes, Bucks MK14 6LE. 1.1 Engineering mathematics 1.1.1 The Greek alphabet Name Symbol Examples of use Capital Lower case alpha A a angles, angular acceleration, various coefficients beta B p angles, coefficients gamm shear strain, surface tension, a T y kinematic viscosity delta A differences, damping 3 coefficient epsilo linear strain n E E zeta Z C dynamic viscosity, efficiency eta H r\ angles, temperature, volume theta 0 0 strain iota I i kappa K K compressibility lambda A X wavelength, thermal conductivity mu M /i Poisson's ratio, coefficient of friction nu N v dynamic viscosity xi E i omicron O o pi n n mathematical constant rho P p density sigma Z o normal stress, standard deviation, sum of tau T T shear stress upsilon Y v phi <D </> angles, heat flow rate, potential energy chi X x psi ¥ i/> helix angle (gears) omega Q co angular velocity, solid angle (co) electrical resistance (Q) 1.1.2 Mathematical symbols is equal to = is not equal to # is identically equal to = is approximately equal to « approaches -► is proportional to oc is smaller than < is larger than > is smaller than or equal to ^ is larger than or equal to ^ magnitude of a \a\ a raised to power n a" square root of a ^Ja nth root of a ny/ a mean value of a a factorial a a! sum £ product n complex operator ij real part of z Re z imaginary part of z Im z modulus of z \z\ argument of z arg z complex conjugate of z z* a multiplied by b ab, a.b, axb a divided by b a/b -, ab~l b function of x Ax) variation of x Sx finite increment of x Ax limit to which f(x) tends as x approaches a ]imj{x) differential coefficient of/(x) with respect to x ,d/7dx,/'(x) dx indefinite integral of/(x) with respect to x ffix)dx increase in value of/(x) as x increases from a to b Wx)\ definite integral of/(x) from x = a to x=b j/(x)dx logarithm to the base 10 of x lg x, log x 10 logarithm to the base a of x log^x exponential of x exp x, ex natural logarithm In x, logx e inverse sine of x arcsin x inverse cosine of x arccos x inverse tangent of x arctan x 4 inverse secant of x arcsec x inverse cosecant of x arccosec x inverse cotangent of x arccot x inverse hyperbolic sine of x arsinh x inverse hyperbolic cosine of x arcosh x inverse hyperbolic tangent of x artanh x inverse hyperbolic cosecant of x arcosech x inverse hyperbolic secant of x arsech x inverse hyperbolic cotangent of x arcoth x vector A magnitude of vector A \A\>A scalar products of vectors A and B A.B vector products of vectors A and B A x B, A A B 1.1.3 Units: SI Basic and supplementary units The International System of Units (SI) is based on nine physical quantities. Physical quantity Unit name Unit symbol length metre m mass kilogram kg time second s plane angle radian rad amount of substance mole mol electric current ampere A luminous intensity candela cd solid angle steradian sr thermodynamic temperature kelvin K 5 Derived units By dimensionally appropriate multiplication and/or division of the units shown on page 5, derived units are obtained. Some of these are given special names. Unit Unit Physical quantity name symbol Derivation electric capacitance farad F (A2s4)/(kgm2) electric charge coulomb C As electric conductance Siemens S (A2s3)/(kgm2) electric potential difference; volt V (kgm2)/(As3) electrical resistance ohm Q (kgm2)/(A2s3) energy joule J (kgm2)/s2 force newton N (kgm)/s2 frequency hertz Hz 1/s illuminance lux lx (cd sr)/m2 inductance henry H (kgm2)/(A2s2) luminous flux lumen Im cdsr magnetic flux weber Wb (kgm2)/(As2) magnetic flux density tesla T kg/(As2) power watt W (kgm2)/s3 pressure pascal Pa kg/(ms2) Some other derived units not having special names. Unit Physical quantity Unit symbol acceleration metre per second squared m/s2 angular velocity radian per second rad/s area square metre m2 current density ampere per square metre A/m2 density kilogram per cubic metre kg/m3 dynamic viscosity pascal second Pas electric charge density coulomb per cubic metre C/m3 electric field strength volt per metre V/m 6 energy density joule per cubic metre J/m3 heat capacity joule per kelvin J/K heat flux density watt per square metre W/m2 kinematic viscosity square metre per second m2/s luminance candela per square metre cd/m2 magnetic field strength ampere per metre A/m moment of force newton metre Nm permeability henry per metre H/m permittivity farad per metre F/m specific volume cubic metre per kilogram m3/kg surface tension newton per metre N/m thermal conductivity watt per metre kelvin W/(mK) velocity metre per second m/s volume cubic metre ™3 See also 1.2.1 (page 54). 1.1.4 Units: not SI Some of the units which are not part of the SI system, but which are recognized for continued use with the SI system, are as shown. Unit Physical quantity Unit name symbol Definition angle degree o (TT/180) rad angle minute ' (7r/10800)rad angle second " (7r/648000)rad Celsius temperature degree Celsius °C K-273.2 (For K see 1.1.3) dynamic viscosity poise P 10" l Pas energy calorie cal «4.18 J Fahrenheit degree Fahrenheit °F (§)°C + 32 temperature force kilogram force kgf * 9.807 N kinematic viscosity stokes St 1(T4 m2/s continued 1

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