1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 1641-3:2011End mills and slot drillsPart 3: Dimensions and designation ofmilling cutters with 7/24 taper shanksBS ISO 1641-3:2011 BRITISH STANDARDNational forewordThis Bri
2、tish Standard is the UK implementation of ISO 1641-3:2011. Itsupersedes BS ISO 1641-3:2003 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee MTE/18, Tools tips and inserts for cutting applications.A list of organizations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
3、beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 67716 8ICS 25.100.20Compliance with a British Standard cannot confer immunity fromlegal obligations.
4、This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 July 2011.Amendments issued since publicationDate Text affectedBS ISO 1641-3:2011Reference numberISO 1641-3:2011(E)ISO 2011INTERNATIONAL STANDARD ISO1641-3Third edition2011-06-15End mills and
5、slot drills Part 3: Dimensions and designation of milling cutters with 7/24 taper shanks Fraises cylindriques 2 tailles et fraises rainurer Partie 3: Dimensions et dsignation des fraises queue cne 7/24 BS ISO 1641-3:2011ISO 1641-3:2011(E) COPYRIGHT PROTECTED DOCUMENT ISO 2011 All rights reserved. Un
6、less 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 permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO
7、 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 reservedBS ISO 1641-3:2011ISO 1641-3:2011(E) ISO 2011 All rights reserved iiiForeword ISO (the International Organi
8、zation 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 committees. Each member body interested in a subject for which a technical committee has been establishe
9、d 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 International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
10、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 International Standards adopted by the technical committees are circulated to the member bodies for voting. Pub
11、lication 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 the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent
12、 rights. ISO 1641-3 was prepared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 2, High speed steel cutting tools and their attachments. This third edition cancels and replaces the second edition (ISO 1641-3:2003), of which it constitutes a minor revision. In particular, this include
13、s updating of the normative references, addition of the designation (see Clause 4) and indication of the tolerance classes in accordance with ISO 2768-1 and ISO 2768-2. ISO 1641 consists of the following parts, under the general title End mills and slot drills: Part 1: Milling cutters with cylindric
14、al shanks Part 2: Dimensions and designation of milling cutters with Morse taper shanks Part 3: Dimensions and designation of milling cutters with 7/24 taper shanks BS ISO 1641-3:2011BS ISO 1641-3:2011INTERNATIONAL STANDARD ISO 1641-3:2011(E) ISO 2011 All rights reserved 1End mills and slot drills P
15、art 3: Dimensions and designation of milling cutters with 7/24 taper shanks 1 Scope This part of ISO 1641 specifies the general dimensions and designation of the following milling cutters with 7/24 taper shanks: end mills, flat-ended or ball-nosed normal series and long series (manual changers); slo
16、t drills short series and normal series (manual changers); end mills, flat-ended normal series and long series (automatic changers). Tool shanks with 7/24 taper for manual tool changers are in accordance with ISO 297. Tool shanks with 7/24 taper for automatic tool changers are in accordance with ISO
17、 7388-1 and ISO 7388-2. It is not applicable to end mills and slot drills with cylindrical shank, which are dealt with in ISO 1641-1; it is not applicable to those with Morse taper shank, which are dealt with in ISO 1641-2. This part of ISO 1641 is not applicable to solid hardmetal end mills and slo
18、t drills. 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 referenced document (including any amendments) applies. ISO 297, 7/24 ta
19、pers for tool shanks for manual changing ISO 2768-1, General tolerances Part 1: Tolerances for linear and angular dimensions without individual tolerance indications ISO 2768-2, General tolerances Part 2: Geometrical tolerances for features without individual tolerance indications ISO 7388-1, Tool s
20、hanks with 7/24 taper for automatic tool changers Part 1: Dimensions and designation of shanks of forms A, AD, AF, U, UD and UF ISO 7388-2, Tool shanks with 7/24 taper for automatic tool changers Part 2: Dimensions and designation of shanks of forms J, JD and JF BS ISO 1641-3:2011ISO 1641-3:2011(E)
21、2 ISO 2011 All rights reserved3 Dimensions 3.1 General All dimensions and tolerances are given in millimetres. Tolerances not specified shall be of tolerance class “m” in accordance with ISO 2768-1 and of class “K” in accordance with ISO 2768-2. 3.2 7/24 taper shanks for manual tool changers 3.2.1 G
22、eneral The values, l1and l2, shall be chosen such that the difference in length (l1 l2) remains constant whatever the series (short, normal or long), according to Table 1. Table 1 Length difference (l1 l2) 7/24 taper no. 30 40 45 50 (l1 l2) 105 135 155 177 3.2.2 Flat-ended end mills and ball-nosed c
23、ylindrical end mills The dimensions of flat-ended end mills and ball-nosed cylindrical end mills shall be in accordance with the dimensions shown in Figure 1 and Table 2. Key 1 7/24 taper shank for manual tool changer in accordance with ISO 297 Figure 1 Flat-ended end mills and ball-nosed cylindrica
24、l end mills with 7/24 taper shanks for manual tool changers BS ISO 1641-3:2011ISO 1641-3:2011(E) ISO 2011 All rights reserved 3Table 2 Dimensions of ball-nosed end mills and flat-ended cylindrical end mills with 7/24 taper shanks for manual tool changers Length, l1Length, l2Range of diameters, d1js1
25、4 Recommended diameters, d1Normal series Long series Normal series Long series 7/24 taper no. 23,6 d1 30 24 and 25 28 150 195 45 90 158 211 30 188 241 40 30 d1 37,5 32 36 208 261 53 106 45 198 260 40 218 280 45 37,5 d1 47,5 40 45 240 302 63 125 50 210 285 40 230 305 45 47,5 d1 60 50 56 252 327 75 15
26、0 50 245 335 45 60 d1 75 63 71 267 357 90 180 75 d1 95 80 283 389 106 212 50 3.2.3 Slot drill The dimensions of slot drill shall be in accordance with the dimensions shown in Figure 2 and Table 3. Key 1 7/24 taper shank for manual tool changer in accordance with ISO 297 Figure 2 Slot drill with 7/24
27、 taper shanks for manual tool changers BS ISO 1641-3:2011ISO 1641-3:2011(E) 4 ISO 2011 All rights reservedTable 3 Dimensions of slot drill with 7/24 taper shanks for manual tool changers Length, l1Length, l2Range of diameters, d1e8 Recommended diameters, d1Short series Normal series Short series Nor
28、mal series 7/24 taper no. 23,6 d1 30 24 and 25 28 131 150 26 45 137 158 30 167 188 40 30 d1 37,5 32 36 187 208 32 53 45 173 198 40 193 218 45 37,5 d1 47,5 40 45 215 240 38 63 50 180 210 40 200 230 45 47,5 d1 60 50 56 222 252 45 75 50 208 245 45 60 d1 75 63 71 230 267 53 90 75 d1 95 80 240 283 63 106
29、 50 3.3 7/24 taper shanks for automatic tool changers 3.3.1 General The values, l1and l2, shall be chosen such that the difference in length (l1 l2) remains constant whatever the series (normal or long), according to Table 4. Table 4 Length difference (l1 l2) 7/24 taper no. 40 50 (l1 l2) 118 156 BS
30、ISO 1641-3:2011ISO 1641-3:2011(E) ISO 2011 All rights reserved 53.3.2 Flat-ended end mills and ball-nosed cylindrical end mills The dimensions of flat-ended end mills and ball-nosed cylindrical end mills shall be in accordance with the dimensions shown in Figure 3 and Table 5. Key 1 7/24 taper shank
31、 for automatic tool changer in accordance with ISO 7388-1 and ISO 7388-2 Figure 3 Flat-ended end mills and ball-nosed cylindrical end mills with 7/24 taper shanks for automatic tool changers Table 5 Dimensions of flat-ended end mills and ball-nosed cylindrical end mills with 7/24 taper shanks for au
32、tomatic tool changers Length, l1Length, l2Range of diameters, d1 js14 Recommended diameters, d1Normal series Long series Normal series Long series 7/24 taper no. 30 d1 37,5 32 36 171 224 53 106 40 181 243 40 37,5 d1 47,5 40 45 219 281 63 125 50 193 268 40 47,5 d1 60 50 56 231 306 75 150 60 d1 75 63
33、71 246 336 90 180 75 d1 85 80 262 368 106 212 50 BS ISO 1641-3:2011ISO 1641-3:2011(E) 6 ISO 2011 All rights reserved4 Designation 4.1 7/24 taper shanks for manual tool changers 4.1.1 Flat-ended end mills and ball-nosed cylindrical end mills Flat-ended end mills and ball-nosed cylindrical end mills w
34、ith 7/24 taper shank for manual tool changers in accordance with this part of ISO 1641 shall be designated by: a) “Flat-ended end mills” or “ball-nosed cylindrical end mills”; b) the reference to this part of ISO 1641, i.e. ISO 1641-3; c) a hyphen; d) the recommended diameter, d1; e) a hyphen; f) th
35、e 7/24 taper number; g) a hyphen; h) letter “m” for “manual tool changers”. EXAMPLE 1 A flat-ended end mill with 7/24 taper shank for manual tool changers in accordance with ISO 1641-3 with recommended diameter d1= 32 and 7/24 taper no. 40 is designated as follows: Flat-ended end mills ISO 1641-3 32
36、 40 m EXAMPLE 2 A ball-nosed cylindrical end mill with 7/24 taper shank for manual tool changers in accordance with ISO 1641-3 with recommended diameter d1= 32 and 7/24 taper no. 40 is designated as follows: Ball-nosed cylindrical end mills ISO 1641-3 32 40 m 4.1.2 Slot drills Slot drills with 7/24
37、taper shank for manual tool changers in accordance with this part of ISO 1641 shall be designated by: a) “Slot drill”; b) the reference to this part of ISO 1641, i.e. ISO 1641-3; c) a hyphen; d) the recommended diameter, d1; e) a hyphen; f) the 7/24 taper number; g) a hyphen; h) letter “m” for “manu
38、al tool changers”. EXAMPLE A slot drill with 7/24 taper shank for manual tool changers in accordance with ISO 1641-3 with recommended diameter d1= 32 and 7/24 taper no. 40 is designated as follows: Slot drill ISO 1641-3 32 40 m BS ISO 1641-3:2011ISO 1641-3:2011(E) ISO 2011 All rights reserved 74.2 7
39、/24 taper shanks for automatic tool changers Flat-ended end mills and ball-nosed cylindrical end mills with 7/24 taper shank for automatic tool changers in accordance with this part of ISO 1641 shall be designated by: a) “Flat-ended end mills” or “ball-nosed cylindrical end mills”; b) the reference
40、to this part of ISO 1641, i.e. ISO 1641-3; c) a hyphen; d) the recommended diameter, d1; e) a hyphen; f) the 7/24 taper number; g) a hyphen; h) letter “a” for “automatic tool changers”. EXAMPLE 1 A flat-ended end mill with 7/24 taper shank for automatic tool changers in accordance with ISO 1641-3 wi
41、th recommended diameter d1= 32 and 7/24 taper no. 40 is designated as follows: Flat-ended end mills ISO 1641-3 32 40 a EXAMPLE 2 A ball-nosed cylindrical end mill with 7/24 taper shank for automatic tool changers in accordance with ISO 1641-3 with recommended diameter d1= 32 and 7/24 taper no. 40 is
42、 designated as follows: Ball-nosed cylindrical end mills ISO 1641-3 32 40 a BS ISO 1641-3:2011ISO 1641-3:2011(E) ICS 25.100.20 Price based on 7 pages ISO 2011 All rights reserved This page deliberately left blankBSI is the independent national body responsible for preparing British Standardsand othe
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