1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Centre drills for centre holes with radius form Type RBS ISO 2541:2016National forewordThis British Standard is the UK implementation of ISO 2541:2016.The UK participation in its preparation was entrusted to Technical C
2、ommittee MTE/18, Tools tips and inserts for cutting applications.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct applicatio
3、n. The British Standards Institution 2016 Published by BSI Standards Limited 2016ISBN 978 0 580 83628 2ICS 25.100.30Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee
4、on 30 November 2016.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS ISO 2541:2016 ISO 2016Centre drills for centre holes with radius form Type RForets centrer pour centres profil curviligne Type RINTERNATIONAL STANDARDISO2541Second edition2016-11-01Reference number
5、ISO 2541:2016(E)BS ISO 2541:2016ISO 2541:2016(E)ii ISO 2016 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic o
6、r mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Genev
7、a, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 2541:2016ISO 2541:2016(E)Foreword ivIntroduction v1 Scope . 12 Designation 13 Dimensions . 1Annex A (normative) Dimensions for centre hole Type R 3Annex B (informative) Relationship between designations in this
8、International Standard and ISO 13399 (all parts) 4Bibliography 5 ISO 2016 All rights reserved iiiContents PageBS ISO 2541:2016ISO 2541:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of prepa
9、ring International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in l
10、iaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC D
11、irectives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that
12、 some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent dec
13、larations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information
14、about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/TC 29, Small tools, Subcommittee SC 2, Holding tools, adaptive items and interfaces.T
15、his second edition cancels and replaces the first edition (ISO 2541:1972), of which it constitutes a minor revision, notably with the addition of Annex B, which gives the relationship between the designations of this International Standard and the ISO 13399 series.iv ISO 2016 All rights reservedBS I
16、SO 2541:2016ISO 2541:2016(E)IntroductionThis International Standard relates to centre drills and deals only with centre drills for centre holes with radius Type R. It is a continuation of ISO 866 and ISO 2540. ISO 2016 All rights reserved vBS ISO 2541:2016This page deliberately left blankCentre dril
17、ls for centre holes with radius form Type R1 ScopeThis International Standard specifies the dimensions of centre drills for centre holes with radius Type R.It covers only metric dimensions, regarded as the only recommended dimensions in the future for this type of drills.The flutes can be straight o
18、r spiral at the option of manufacturer.Unless otherwise stated, these drills are right-hand cutting.Annex A gives the recommended dimensions for the centre holes, Type R, which can be obtained by a rational use of the centre drills listed in this International Standard.2 DesignationCentre drills sha
19、ll be designated by the type (Type R in this case), the pilot diameter, d (first column of Table 1) and the shank diameter, d1(second column of Table 1).EXAMPLE R 2,5/6,3.3 DimensionsFigure 1 Centre drills Type R INTERNATIONAL STANDARD ISO 2541:2016(E) ISO 2016 All rights reserved 1BS ISO 2541:2016I
20、SO 2541:2016(E)Table 1Dimensions in millimetresdad1L l rk12 h9 max. min. max. min.1,0 3,15 33,5 29,5 3,0 3,15 2,5(1,25) 3,15 33,5 29,5 3,35 4,0 3,151,6 4,0 37, 5 33,5 4,25 5,0 4,02,0 5,0 42 38 5,3 6,3 5,02,5 6,3 47 43 6,7 8,0 6,33,15 8,0 52 48 8,5 10,0 8,04,0 10,0 59 53 10,6 12,5 10,0(5,0) 12,5 66 6
21、0 13,2 16,0 12,56,3 16,0 74 68 17,0 20,0 16,0(8,0) 20,0 83 77 21,2 25,0 20,010,0 25,0 103 97 26,5 31,5 25,0aSizes in brackets should be avoided whenever possible.2 ISO 2016 All rights reservedBS ISO 2541:2016ISO 2541:2016(E)Annex A (normative) Dimensions for centre hole Type RFigure A.1Table A.1Dime
22、nsions in millimetresdanominalDnominal1,0 2,12(1,25) 2,651,6 3,352,0 4,252,5 5,33,15 6,74,0 8,5(5,0) 10,66,3 13,2(8,0) 17,010,0 21,2aSizes in brackets should be avoided whenever possible. ISO 2016 All rights reserved 3BS ISO 2541:2016ISO 2541:2016(E)Annex B (informative) Relationship between designa
23、tions in this International Standard and ISO 13399 (all parts)For relationship between designations in this International Standard and preferred symbols according to ISO 13399 (all parts), see Table B.1.Table B.1 Relationship between designations in this International Standard and ISO 13399 (all par
24、ts)Symbol in ISO 2541Reference in ISO 2541Property name in ISO 13399 (all parts)Symbol in ISO 13399 (all parts)Reference in ISO 13399 (all parts)dFigure 1 Table 1cutting diameter DC 71D084653E57Fd1Figure 1 Table 1connection diameter machine sideDCONMS 71EBDBF5060E6d1h9 Table 1tolerance class connec-
25、tion diameter machine sideTCDCONMS 72719B2BD8041LFigure 1 Table 1overall length OAL 71D078EB7C086120 at dimension d Figure 1 point angle SIG 71DCCC4FEF366rFigure 1 Table 1radius countersunk RCSK 726E2FCCB72244 ISO 2016 All rights reservedBS ISO 2541:2016ISO 2541:2016(E)Bibliography1 ISO 866, Centre
26、drills for centre holes without protecting chamfers Type A2 ISO 2540, Centre drills for centre holes with protecting chamfer Type B3 ISO 13399 (all parts), Cutting tool data representation and exchange ISO 2016 All rights reserved 5BS ISO 2541:2016This page deliberately left blankBSI is the national
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