1、Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.REAFFIRMED 2002FOR CURRENT COMMITTEE PERSONNELPLEASE E-MAIL CSasme.orgAN AMERICAN NATIONAL
2、 STANDARD Machine Tapers(Self Holding and Steep Taper Series)ASME B5.10-1994(REVISION OF ANSI B5.10-1981)The American Society of Mechanical Engineers 345 East 47th Street,New York,N.Y.1001 7 Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Sta
3、nford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.Date of Issuance:August 15,1994 This Standard will be revised when the Society approves the issuance of a new edition,There will be no Addenda or written interpretations issued to this Edition.ASME i
4、s the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the criteria for American National Standards.The Consensus Committee that approved the code or standard was balanced to assure that individuals from c
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9、retations by individual volunteers.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.Copyright 0 1994 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in U.S.A.Copyrig
10、hted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.FOREWORD(This Foreword is not part of ASME B5.10-1994.)The American Standard for Machine Tapers w
11、as formulated by the Sectional Committee on the Standardization of Small Tools and Machine Tool Elements organized in September 1922,under the procedure of the American Standards Association.This project is now sponsored by the NMTBA,SAE,ASTE,and the ASME.The importance of unifying American practice
12、 in the use of machine tapers had been recognized for some time and it was known that certain European countries had adopted as their national standards certain selections and slight modifications of the three American tapers then in use,the Brown&Sharpe(1860),Morse(1862),and Jarno(1889).Technical C
13、ommittee No.3 on the Standardization of Machine Tapers was appointed in August 1926,and held its organization meeting in September 1926,in New Haven,Connecticut.The first of a series of six tentative drafts of this standard bears the date of May 1927,and the last,November 1933.During this period of
14、six years numerous committee meet-ings were held and several questionnaires were distributed to industry on this subject.In the early stages of the work on this standard the opinion of the members of the committee was divided between the belief that an entirely new system of tapers should be adopted
15、 to be put into effect gradually and the belief that no changes should be made in the three existing taper series.Finally,however,the members of the technical committee agreed on a compromise standard series which now contains twenty two (22)sizes in a composite list of self-holding tapers having sl
16、opes selected from the three present series and the series adopted by William Sellers&Co.in 1862.This proposed composite series,therefore,constitutes an appreciable reduction from the number of sizes now in use.The formal approval by the sectional committee and the sponsor organizations of the first proposal covering the self-holding series followed next and the American Standards Association gave its approval and designation as American Standard in March 1937.The subgroup charged with the task