1994_2013.pdf

Copyright 2013 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cREAFFIRMED 2013FOR CURRENT COMMITTEE PERSONNELPLEASE E-MAIL CSasme.orgIntentionally left blank Copyright 2013 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cAN AMERICAN NATIONAL 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 Copyright 2013 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cDate 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 is 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 competent and concerned interests have had an opportunity to participate.The proposed code or standard was made available for public review and comment which provides an opportunity for additional public input from industry,academia,regulatory agencies,and the public-at-large.ASME does not approve,rate,or endorse any item,construction,proprietary device,or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable Letters Patent,nor assume any such liability.Users of a code or standard are expressly advised that determination of the validity of any such patent rights,and the risk of infringement of such rights,is entirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations issued in accordance with governing ASME procedures and policies which preclude the issuance of interpretations 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.Copyright 2013 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cFOREWORD(This Foreword is not part of ASME B5.10-1994.)The American Standard for Machine Tapers was 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 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 Committee 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 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 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 slopes 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 of developing a standard for self-releasi