1、raising standards worldwide NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI Standards Publication BS ISO 666:2012 Machine tools Mounting of grinding wheels by means of hub flangesBS ISO 666:2012 BRITISH STANDARD National foreword This British Standard is the UK implementat
2、ion of ISO 666:2012. It supersedes BS ISO 666:1996 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee MTE/13, Grinding wheels, abrasive tools, paper and cloths, and powders. A list of organizations represented on this committee can be obtained on request
3、 to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012. Published by BSI Standards Limited 2012 ISBN 978 0 580 77833 9 ICS 25.100.70 Compliance with a Britis
4、h Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2012. Amendments issued since publication Date T e x t a f f e c t e dBS ISO 666:2012 ISO 2012 Machine tools Mounting of grindin
5、g wheels by means of hub flanges Machines-outils Montage des meules par moyeux-flasques INTERNATIONAL STANDARD ISO 666 Fourth edition 2012-05-15 Reference number ISO 666:2012(E)BS ISO 666:2012ISO 666:2012(E) ii ISO 2012 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2012 All rights reserved. U
6、nless 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. IS
7、O 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 SwitzerlandBS ISO 666:2012ISO 666:2012(E) ISO 2012 All rights reserved iii Contents Page Foreword iv 1 Scope 1 2 Normative references . 1 3 Terms and
8、 definitions . 2 4 Requirements . 2 4.1 General . 2 4.2 Dimensions . 2 4.3 Flange socket . 5 4.4 Material . 7 4.5 Marking . 7 5 Designation . 9 6 Scope of delivery . 9 Annex A (informative) Calculation of clamping force and tightening torque for the mounting of abrasive products by means of flanges
9、.10BS ISO 666:2012ISO 666:2012(E) Foreword 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 committees. Each member body int
10、erested 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 International Electrotechnic
11、al 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 International Standards adopted by the
12、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 the subject of patent rights.
13、ISO shall not be held responsible for identifying any or all such patent rights. ISO 666 was prepared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 5, Grinding wheels and abrasives. This fourth edition cancels and replaces the third edition (ISO 666:2006), which has been technically
14、 revised. The significant modifications are the following: a) in 4.2, Figure 1, the tolerance class of the outer diameter, D H2 , of the fixed flange has been changed to f6; consequently, the tolerance class of the outer diameter, D H1 , of the loose flange has been changed to e7, in order to avoid
15、possible safety problems, in particular, for bonded abrasive products in cases where the minimum permitted clearance between the hole, H, of the grinding wheel and the diameter, D H2 , of the flange is reached and can lead to tangential tensile stress in the wheel; b) in 4.2, Figure 1, the tolerance
16、 for the concavity of the flanges part supporting the wheel has been reduced, in order to obtain a better distribution of the tightening forces on the wheels contact surface. iv ISO 2012 All rights reservedBS ISO 666:2012INTERNATIONAL STANDARD ISO 666:2012(E) Machine tools Mounting of grinding wheel
17、s by means of hub flanges 1 Scope This International Standard specifies the essential requirements, especially the dimensions, for hub flanges for plain grinding wheels according to ISO 603-1, ISO 603-2, ISO 603-4, ISO 603-6, ISO 603-7 and ISO 603-8, with a ratio of the bore diameter to the outside
18、diameter H/D 0,2. It is also applicable to super abrasives with vitrified or metal core having the same diameters as the grinding wheels in accordance with the according to the aforementioned parts of ISO 603, independently from the material of the core. It applies to grinding wheels with peripheral
19、 speeds up to 50 m/s and driving powers of the wheel spindle up to 30 kW. It is not applicable to mounting devices for cutting-off wheels. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For d
20、ated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 603-1, Bonded abrasive products Dimensions Part 1: Grinding wheels for external cylindrical grinding between centres ISO 603-2, Bonded abrasi
21、ve products Dimensions Part 2: Grinding wheels for centreless external cylindrical grinding ISO 603-4, Bonded abrasive products Dimensions Part 4: Grinding wheels for surface grinding/peripheral grinding ISO 603-6, Bonded abrasive products Dimensions Part 6: Grinding wheels for tool and tool room gr
22、inding ISO 603-7, Bonded abrasive products Dimensions Part 7: Grinding wheels for manually guided grinding ISO 603-8, Bonded abrasive products Dimensions Part 8: Grinding wheels for deburring and fettling/snagging ISO 702-1, Machine tools Connecting dimensions of spindle noses and work holding chuck
23、s Part 1: Conical connection ISO 1119, Geometrical product specifications (GPS) Series of conical tapers and taper angles ISO 2768-1, General tolerances Part 1: Tolerances for linear and angular dimensions without individual tolerance indications ISO 4762, Hexagon socket head cap screws ISO 6103, Bo
24、nded abrasive products Permissible unbalances of grinding wheels as delivered Static testing ISO 12164-1, Hollow taper interface with flange contact surface Part 1: Shanks Dimensions ISO 12164-2, Hollow taper interface with flange contact surface Part 2: Receivers Dimensions ISO 13942, Bonded abrasi
25、ve products Limit deviations and run-out tolerances ISO 2012 All rights reserved 1BS ISO 666:2012ISO 666:2012(E) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 hub flange system of fixed and loose flanges for a friction mounting of grinding
26、wheels on a wheel spindle, where a securing system for frictional or positive connection with the wheel spindle is integrated into the fixed flange and the clamping force is applied via several screws arranged on a pitched circle 3.2 fixed flange part of the hub flange, by means of which the frictio
27、nal or positive connection to the wheel spindle is established NOTE For CNC grinding machines, its contact area with the grinding wheel (annular surface) serves as the reference surface for the determination of the position of the grinding wheel on the spindle. 3.3 loose flange counterflange flange
28、that represents the counterpart to the fixed flange and has to be removed for the mounting/demounting of the grinding wheel (on/from the wheel spindle or the hub flange) 3.4 flange socket part of the fixed flange, by means of which the frictional or positive connection to the wheel spindle is establ
29、ished (interface with the wheel spindle) 3.5 spindle socket part of the wheel spindle by means of which the frictional or positive connection to the hub flange is established (interface with the hub flange) 4 Requirements 4.1 General The hub flanges in accordance with this International Standard are
30、 designed for the specified outside diameters, thicknesses and bores of the grinding wheels according to Table 1 for the transmission of the following driving powers of the wheel spindle: 3 kW for grinding wheel diameters D = 200 mm to D = 356 mm; 7 kW for grinding wheel diameters D = 400 mm to D =
31、508 mm; 15 kW for grinding wheel diameters D = 600 mm to D = 762 mm; 30 kW for grinding wheel diameters D = 800 mm to D = 1 250 mm. 4.2 Dimensions For the dimensions of hub flanges, see Figure 1 and Table 1. For the dimensions of flange sockets, see Figures 2 to 6 and Table 2. Details not mentioned
32、shall be chosen according to the intended use. This includes the position and geometry of the groove for the balancing weights, and the pitch diameter of the screw mounting system. The latter should be chosen as large as possible. 2 ISO 2012 All rights reservedBS ISO 666:2012ISO 666:2012(E) Dimensio
33、ns in millimetres General tolerances ISO 2768-m Surface roughness in micrometres aThe diameters D L1 , D L2and D pare left to the manufacturers discretion. bD H1and D H2correspond to the nominal bore diameter, H, of the grinding wheel. cT PL , T RL 0,03 mm for grinding wheels in accordance with ISO
34、603-2, ISO 603-4, ISO 603-6, ISO 603-7 and ISO 603-8, and for super abrasives with vitrified core. T PL , T RL 0,01 mm for super abrasives with metal core. dFlange socket A, BF, BM, CF or CM. eX (pitch of threaded holes) Z. Figure 1 Hub flange ISO 2012 All rights reserved 3BS ISO 666:2012ISO 666:201
35、2(E) Table 1 Dimensions of grinding wheels and hub flanges Grinding wheel Hub flange Number and size of screws d D a T a H a D F D i B N S Q Z Hexagon socket head cap screw in accordance with ISO 4762 min. max. min. min. min. 200 13 20 50,8 85 60 6 5 T c+ 6 mm min. 4 M5 250 20 40 200 25 125 76,2 115
36、 85 8 5 6 M5 250 20 40 300 20 80 350/356 32 80 125 250 20 250 127 165 137 10 6 6 M6 300 20 250 350/356 25 600 175 12 6 M8 400/406 32 100 450/457 32 80 185 140 13 500/508 50 80 191 600/610 50 80 210 145 14 8 250 25 250 152,4 180 162 10 6 6 M8 300 40 250 350/356 100 600 190 162 12 400/406 40 50 196 16
37、5 12 450/457 40 63 204 13 500/508 40 80 212 170 350/356 b b 160 b 202 170 12 6 6 M8 400/406 450/457 220 170 13 500/508 400/406 25 250 203,2 240 215 12 8 8 M8 450/457 32 80 260 13 500/508 40 63 600/610 20 100 272 14 8 M10 750/762 63 100 300 230 16 500/508 25 600 304,8 365 315 15 10 8 M12 600/610 20 6
38、00 750/762 20 600 382 320 16 800/813 20 150 410 330 18 10 M12 900/914 20 152 1 060/1 067 20 150 435 330 22 4 ISO 2012 All rights reservedBS ISO 666:2012ISO 666:2012(E) Grinding wheel Hub flange Number and size of screws d D a T a H a D F D i B N S Q Z Hexagon socket head cap screw in accordance with
39、 ISO 4762 min. max. min. min. min. 900/914 20 150 406,4 492 420 25 1510 M16 1 060/1 067 20 150 520 1 060/1 067 63 150 508 602 530 25 15 10 M16 1 250 63 150 635 aDimensions in accordance with ISO 603-1, ISO 603-2, ISO 603-4, ISO 603-6, ISO 603-7 and ISO 603-8; limit deviations and run-out tolerances
40、in accordance with ISO 13942. bGrinding wheels with H = 160 mm are mainly used for the grinding of flanks of gear teeth and threads; they are not standardized in ISO 603-1, ISO 603-2, ISO 603-4, ISO 603-6, ISO 603-7 or ISO 603-8. cDimension T is the actual size of the grinding wheel thickness. dThe
41、method for calculating the necessary clamping force and screw-tightening torques is given in Annex A. 4.3 Flange socket The interface of the fixed flange and the wheel spindle cannot be specified in detail in this International Standard. In the following, different flange sockets are presented in Fi
42、gures 2 to 6 and preferred number series for nominal sizes are given in Table 2. This representation of flange sockets enables an unambiguous definition of the interface flange/wheel spindle and the limitation of the variety of flange sockets. The flange sockets presented shall be favoured in use. a
43、) Type A: flange socket for spindle with taper shank 1:10 in accordance with ISO 1119. Figure 2 Taper 1:10 Table 1 (continued) ISO 2012 All rights reserved 5BS ISO 666:2012ISO 666:2012(E) b) Type BF: flange socket for spindle with taper shank 1:4 in accordance with ISO 702-1. Figure 3 Short taper 1:
44、4 (female taper) c) Type BM: flange socket for spindle with taper sleeve 1:4 in accordance with ISO 702-1. Figure 4 Short taper 1:4 (male taper) d) Type CF: flange socket for spindle with hollow taper shank 1:10 in accordance with ISO 12164-2. Figure 5 Taper 1:10 (female taper) 6 ISO 2012 All rights
45、 reservedBS ISO 666:2012ISO 666:2012(E) e) Type CM: flange socket for spindle with hollow taper sleeve 1:9,98 in accordance with ISO 12164-1. Figure 6 Taper 1:9,98 (male taper) 4.4 Material The material is steel with a minimum tensile strength of 500 N/mm 2 ; the type is left to the manufacturers di
46、scretion. 4.5 Marking Hub flanges in accordance with this International Standard shall be marked with the following characteristics. a) Loose flange: 1) reference to this International Standard, i.e. ISO 666; 2) maximum outside diameter, D, of the grinding wheel; 3) bore diameter, H, of the grinding
47、 wheel. b) Fixed flange: 1) reference to this International Standard, i.e. ISO 666; 2) maximum outside diameter, D, of the grinding wheel; 3) clamping area, T, of the hub flange; 4) bore diameter, H, of the grinding wheel; 5) identification of the manufacturer or supplier. ISO 2012 All rights reserv
48、ed 7BS ISO 666:2012ISO 666:2012(E) Table 2 Connecting dimensions of flange sockets Grinding wheel Flange socketType A Types BF and BM Types CF and CM D H d 1 d 2 a d 3 b 200 50,8 40 53,975 48,01 250 200 76,2 40 and 63 53,975 and 63,513 48,01 and 60,012 250 300 350/356 250 127 300 350/356 400/406 450
49、/457 500/508 600/610 250 152,4 80 82,563 75,013 300 350/356 400/406 450/457 500/508 350/356 160 400/406 450/457 500/508 400/406 203,2 450/457 500/508 600/610 750/762 500/508 304,8 100 106,375 95,016 600/610 750/762 800/813 120 139,719 120,016 900/914 1 060/1 067 900/914 406,4 1 060/1 067 1 060/1 067 508 1 250 aComplete dimensions in accordance with ISO 702-1. bComplete dimensions in accordance with ISO 12164-1 and ISO 12164-2. 8 ISO 2012 All rights reser
