1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 521:2011Machine chucking reamerswith cylindrical shanks andMorse taper shanksBS ISO 521:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementatio
2、n of ISO 521:2011.The UK participation in its preparation was entrusted to TechnicalCommittee MTE/18, Tools tips and inserts for cutting applications.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the
3、necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 64854 0ICS 25.100.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy
4、Committee on 31 October 2011.Amendments issued since publicationDate Text affectedBS ISO 521:2011Reference numberISO 521:2011(E)ISO 2011INTERNATIONAL STANDARD ISO521Second edition2011-10-01Machine chucking reamers with cylindrical shanks and Morse taper shanks Alsoirs machine, queue cylindrique et q
5、ueue cne Morse BS ISO 521:2011ISO 521:2011(E) COPYRIGHT PROTECTED DOCUMENT ISO 2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permissi
6、on in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2011 All rights reserved
7、BS ISO 521:2011ISO 521:2011(E) ISO 2011 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical com
8、mittees. 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 liaison with ISO, also take part in the work. ISO collaborates closely with the
9、 International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft Internatio
10、nal Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be t
11、he subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 521 was prepared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 2, High speed steel cutting tools and their attachments. This second edition cancels and replaces the firs
12、t edition (ISO 521:1975), of which it constitutes a minor revision. In particular, the normative references have been updated. BS ISO 521:2011BS ISO 521:2011INTERNATIONAL STANDARD ISO 521:2011(E) ISO 2011 All rights reserved 1Machine chucking reamers with cylindrical shanks and Morse taper shanks 1
13、Scope This International Standard specifies the dimensions of machine chucking reamers with cylindrical shanks and Morse taper shanks. It deals with the following types of reamer: machine chucking reamers with cylindrical shanks in the range from 1,32 mm to 20 mm diameter; machine chucking reamers w
14、ith Morse taper shanks in the range from 5,30 mm to 50 mm diameter. For each type of reamer, this International Standard gives two tables, one showing preferred sizes with corresponding dimensions, and the other being a general table set out as functions of diameter steps. Provision is also made for
15、 tolerances on lengths, cutting diameters and the diameters of cylindrical shanks. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the
16、 referenced document (including any amendments) applies. ISO 237, Rotating tools with parallel shanks Diameters of shanks and sizes of driving squares ISO 296, Machine tools Self-holding tapers for tool shanks 3 Dimensions 3.1 General All dimensions and tolerances are given in millimetres. Unless ot
17、herwise stated, these reamers are right-hand cutting. The flutes may be straight or spiral, at the discretion of the manufacturer. 3.2 Dimensions of reamers with cylindrical shanks The dimensions of reamers with cylindrical shanks shall be in accordance with the indications given in Figure 1 and Tab
18、les 1 and 2. BS ISO 521:2011ISO 521:2011(E) 2 ISO 2011 All rights reserveda) For d1up to 3,75 mm Key 1 cylindrical shank in accordance with ISO 237 b) For d1over 3,75 mm Figure 1 Reamers with cylindrical shanks BS ISO 521:2011ISO 521:2011(E) ISO 2011 All rights reserved 3Table 1 Preferred dimensions
19、 of reamers with cylindrical shanks d1am6d2h9 l1l2l3tol.ctol.ctol.c1,4 1,4 40 1,58 1 (1,5)b1,5 1,6 1,6 43 9 1,8 1,8 46 10 2,0 2,0 49 11 2,2 2,2 53 12 2,5 2,5 57 14 2,8 2,8 61 15 3,0 3,0 3,2 3,2 65 16 3,5 3,5 70 18 4,0 4,0 75 19 32 1,5 4,5 4,5 80 21 335,0 5,0 86 23 34 5,5 5,6 93 26 36 6 5,6 93 26 7 7
20、,1 109 31 1,540 8 8,0 117 33 429 9,0 125 2 36 44 10 10,0 133 38 46 11 142 4112 151 44 (13)b14 12,5 160 47 50 (15)b162 5016 170 52 (17)b14,0 175 5452 18 182 56 (19)b16,0 189 5858 20 195 60 aThe cutting diameter is measured immediately behind the taper lead or chamfer. bThe use of the sizes in parenth
21、eses shall be avoided wherever possible. cFor special tolerances, the lengths of reamers and their shank dimensions may be chosen from the next larger or smaller range, but the above-mentioned tolerances apply. BS ISO 521:2011ISO 521:2011(E) 4 ISO 2011 All rights reservedTable 2 General table, set o
22、ut as functions of diameter steps Diameter range d2h9 l1l2l3d1m6 From Up to and including tol. tol. tol. 1,32 1,50 d1 d240 1,58 1 1,50 1,70 43 9 1,70 1,90 46 10 1,90 2,12 49 11 2,12 2,36 53 12 2,36 2,65 57 14 2,65 3,00 61 15 3,00 3,35 65 16 3,35 3,75 70 18 3,75 4,25 4,0 75 19 32 1,5 4,25 4.75 4,5 80
23、 21 33 4,75 5,30 5,0 86 23 34 5,30 6,00 5,6 93 26 36 6,00 6,70 6,3 101 28 38 6,70 7,50 7,1 109 31 1,540 7,50 8,50 8,0 117 33 42 8,50 9,50 9,0 125 2 36 449,50 10,60 10,0 133 38 46 10,60 11,80 142 41 11,80 13,20 151 44 13,20 14,00 12,5 160 4750 14,00 15,00 162 50 15,00 16,00 170 52 16,00 17,00 14,0 17
24、5 5452 17,00 18,00 182 56 18,00 19,00 16,0 189 5858 19,00 20,00 195 60 3.2.1 Dimensions of cylindrical shanks of reamers in range from 1,32 mm to 3,75 mm diameter The diameters of the cylindrical shank shall be the same diameters as the cutting part. 3.2.2 Dimensions of cylindrical shanks of reamers
25、 in the range from 3,75 mm to 20 mm diameter The diameters of the cylindrical shanks shall be in accordance with ISO 237. BS ISO 521:2011ISO 521:2011(E) ISO 2011 All rights reserved 53.3 Dimensions of reamers with Morse taper shanks The dimensions of reamers with Morse taper shanks shall be in accor
26、dance with the indications given in Figure 2 and Tables 3 and 4. Key 1 Morse taper shank in accordance with ISO 296 Figure 2 Reamers with Morse taper shanks Table 3 Preferred dimensions of reamers with Morse taper shanks d1a m6 l1l2Morse taper No.d1a m6 l1l2Morse taper No.tol.ctol.ctol.ctol.c5,5 138
27、 2 26 1 1 (24)b268 2 68 1,53 6 25 7 150 31 1,5(26)b273 70 8 156 33 28 277 71 9 162 36 (30)b281 73 10 168 38 32 317 3 77 4 11 175 41 (34)b321 78 12 182 44 (35)b(13)b36 325 79 14 189 47 (38)b329 81 15 204 502 40 16 210 52 (42)b333 82 (17)b214 54 (44) b336 83 18 219 56 45(19)b223 58 (46)b340 84 20 228
28、60 (48)b344 86 22 237 64 50 aThe cutting diameter is measured immediately behind the taper lead or chamfer. bThe use of the sizes in parentheses shall be avoided wherever possible. cFor special tolerances, the lengths of reamers and their shank dimensions may be chosen from the next larger or smalle
29、r range, but the above-mentioned tolerances apply. BS ISO 521:2011ISO 521:2011(E) 6 ISO 2011 All rights reservedTable 4 General table, set out as functions of diameter steps Diameter range d1m6 l1l2Morse taper No. From Up to and including tol. tol. 5,30 6,00 138 2 26 1 1 6,00 6,70 144 28 6,70 7,50 1
30、50 31 1,5 7,50 8,50 156 33 8,50 9,50 162 36 9,50 10,60 168 38 10,60 11,80 175 41 11,80 13,20 182 44 13,20 14,00 189 47 14,00 15,00 204 50 2 15,00 16,00 210 52 16,00 17,00 214 54 17,00 18,00 219 56 18,00 19,00 223 58 19,00 20,00 228 60 20,00 21,20 232 62 21,20 22,40 237 64 22,40 23,02 241 66 23,02 23
31、,60 264 66 3 23,60 25,00 268 68 25,00 26,50 273 70 26,50 28,00 277 71 28,00 30,00 281 73 30,00 31,50 285 75 31,50 31,75 290 77 31,75 33,50 317 3 77 4 33,50 35,50 321 78 35,50 37,50 325 79 37,50 40,00 329 81 40,00 42,50 333 82 42,50 45,00 336 83 45,00 47,50 340 84 47,50 50,00 344 86 BS ISO 521:2011BS
32、 ISO 521:2011ISO 521:2011(E) ICS 25.100.30 Price based on 6 pages ISO 2011 All rights reserved This page deliberately left blankBSI is the independent national body responsible for preparing British Standardsand other standards-related publications, information and services. It presents the UK view
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