5-50_2009.pdf

AN AMERICAN NATIO NAL STANDARD ASME B5.50-2009Revision of ASME B5.50-1994(R2003)7/24 Taper Tool to Spindle Connection for Automatic Tool ChangeCopyright 2009 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted 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.ASME B5.50-2009Revision of ASME B5.50-1994(R2003)7/24 Taper Tool toSpindle Connectionfor Automatic ToolChangeAN AMERICAN NATIONAL STANDARDCopyright 2009 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted 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.Date of Issuance:December 11,2009This Standard will be revised when the Society approves the issuance of a new edition.There willbe no addenda or written interpretations of the requirements of this Standard issued to this edition.Periodically,certain actions of the ASME B5 Committee may be published as Cases.Cases arepublished on the ASME Web site under the Committee Pages at http:/cstools.asme.org as they areissued.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 NationalStandards.The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate.The proposed code or standard was madeavailable forpublic review andcomment thatprovides an opportunityfor additional publicinput 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 anyitems mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent,nor assume any such liability.Users of a code or standard are expresslyadvised that determination of the validity of any such patent rights,and the risk of infringement of such rights,isentirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted asgovernment or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME procedures and policies,which precludes the issuance of interpretations by individuals.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.The American Society of Mechanical EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2009 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyright 2009 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted 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.CONTENTSForeword.ivCommittee Roster.vCorrespondence With the B5 Committee.vi1General.12Essential Dimensions for 7/24 Taper Toolholder Shank.23Essential Dimensions for Retention Knobs.24Essential Dimensions for 7/24 Taper Spindle Sockets.2Figure1Optional Face-Mount Holes,7/24 Taper Spindle Socket.2Tables1Essential Dimensions of Basic Toolholder Shanks for Machining Centers WithAutomatic Tool Changers.32Essential Dimensions of Retention Knobs.53Essential Dimensions of 7/24 Taper Spindle Socket.7Nonmandatory AppendicesAUseful Technical Information.9BExcerpt From ISO 1947:1973,System of Cone Tolerances for Conical WorkpiecesFrom C p 1:3 to 1:500 and Lengths From 6 to 630 mm.11iiiCopyright 2009 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted 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.FOREWORDThe Aerospace Industries Association(AIA)developed,in cooperation with machine toolbuilders and users,standards of toolholder shanks and retention knobs for machining centerswith automatic tool changers.AIA/NAS 970 was first published in 1964.The objective of thisstandardizationeffortwastoreducethelargenumberofalreadyexis