1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 666:2012Machine tools Mounting ofgrinding wheels by means ofhub flangesBS ISO 666:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of I
2、SO 666:2012. Itsupersedes BS ISO 666:1996 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee MTE/13, Grinding wheels, abrasive tools, paper andcloths, and powders.A list of organizations represented on this committee can beobtained on request to its secret
3、ary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 77833 9ICS 25.100.70Compliance with a British Standard cannot con
4、fer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 June 2012.Amendments issued since publicationDate T e x t a f f e c t e dBS ISO 666:2012 ISO 2012Machine tools Mounting of grinding wheels by means of hub fl
5、angesMachines-outils Montage des meules par moyeux-flasquesINTERNATIONAL STANDARDISO666Fourth edition2012-05-15Reference numberISO 666:2012(E)BS ISO 666:2012ISO 666:2012(E)ii ISO 2012 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2012All rights reserved. Unless otherwise specified, no part of
6、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 copyright officeCase postale 56 CH-12
7、11 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 666:2012ISO 666:2012(E) ISO 2012 All rights reserved iiiContents PageForeword iv1 Scope 12 Normative references . 13 Terms and definitions . 24 Requirements . 24.1 General . 24
8、.2 Dimensions . 24.3 Flange socket . 54.4 Material . 74.5 Marking . 75 Designation . 96 Scope of delivery . 9Annex A (informative) Calculation of clamping force and tightening torque for the mounting of abrasive products by means of flanges .10BS ISO 666:2012ISO 666:2012(E)ForewordISO (the Internati
9、onal 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 interested in a subject for which a technical committee has been
10、 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 Electrotechnical Commission (IEC) on all matters of electrotechnical standa
11、rdization.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 vo
12、ting. 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. ISO shall not be held responsible for identifying any or all suc
13、h 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 revised.The significant modifications are the following:a) in 4.2
14、, Figure 1, the tolerance class of the outer diameter, DH2, of the fixed flange has been changed to f6; consequently, the tolerance class of the outer diameter, DH1, of the loose flange has been changed to e7, in order to avoid possible safety problems, in particular, for bonded abrasive products in
15、 cases where the minimum permitted clearance between the hole, H, of the grinding wheel and the diameter, DH2, of the flange is reached and can lead to tangential tensile stress in the wheel;b) in 4.2, Figure 1, the tolerance for the concavity of the flanges part supporting the wheel has been reduce
16、d, 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 wheels by means of hub flanges1 ScopeThis International Standard specifies the ess
17、ential 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 diameter H/D 0,2. It is also applicable to super abrasives with vitrified or me
18、tal 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 speeds up to 50 m/s and driving powers of the wheel spindle up to 30 kW.It is
19、not applicable to mounting devices for cutting-off wheels.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the lates
20、t 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 centresISO 603-2, Bonded abrasive products Dimensions Part 2: Grinding wheels for centreless external cylindrical g
21、rindingISO 603-4, Bonded abrasive products Dimensions Part 4: Grinding wheels for surface grinding/peripheral grindingISO 603-6, Bonded abrasive products Dimensions Part 6: Grinding wheels for tool and tool room grindingISO 603-7, Bonded abrasive products Dimensions Part 7: Grinding wheels for manua
22、lly guided grindingISO 603-8, Bonded abrasive products Dimensions Part 8: Grinding wheels for deburring and fettling/snaggingISO 702-1, Machine tools Connecting dimensions of spindle noses and work holding chucks Part 1: Conical connectionISO 1119, Geometrical product specifications (GPS) Series of
23、conical tapers and taper anglesISO 2768-1, General tolerances Part 1: Tolerances for linear and angular dimensions without individual tolerance indicationsISO 4762, Hexagon socket head cap screwsISO 6103, Bonded abrasive products Permissible unbalances of grinding wheels as delivered Static testingI
24、SO 12164-1, Hollow taper interface with flange contact surface Part 1: Shanks DimensionsISO 12164-2, Hollow taper interface with flange contact surface Part 2: Receivers DimensionsISO 13942, Bonded abrasive products Limit deviations and run-out tolerances ISO 2012 All rights reserved 1BS ISO 666:201
25、2ISO 666:2012(E)3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1hub flangesystem of fixed and loose flanges for a friction mounting of grinding wheels on a wheel spindle, where a securing system for frictional or positive connection with the whe
26、el spindle is integrated into the fixed flange and the clamping force is applied via several screws arranged on a pitched circle3.2fixed flangepart of the hub flange, by means of which the frictional or positive connection to the wheel spindle is establishedNOTE For CNC grinding machines, its contac
27、t 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.3.3loose flangecounterflangeflange that represents the counterpart to the fixed flange and has to be removed for the mounting/demounting of the
28、grinding wheel (on/from the wheel spindle or the hub flange)3.4flange socketpart of the fixed flange, by means of which the frictional or positive connection to the wheel spindle is established (interface with the wheel spindle)3.5spindle socketpart of the wheel spindle by means of which the frictio
29、nal or positive connection to the hub flange is established (interface with the hub flange)4 Requirements4.1 GeneralThe hub flanges in accordance with this International Standard are designed for the specified outside diameters, thicknesses and bores of the grinding wheels according to Table 1 for t
30、he 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 = 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
31、D = 1 250 mm.4.2 DimensionsFor 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 shall be chosen according to the intended use. This includes the position and geometry of the groove for the balancing wei
32、ghts, 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)Dimensions in millimetres General tolerances ISO 2768-m Surface roughness in micrometresaThe diameters DL1, DL2and Dpare left to the
33、 manufacturers discretion.bDH1and DH2correspond to the nominal bore diameter, H, of the grinding wheel.cTPL, TRL 0,03 mm for grinding wheels in accordance with ISO 603-2, ISO 603-4, ISO 603-6, ISO 603-7 and ISO 603-8, and for super abrasives with vitrified core. TPL, TRL 0,01 mm for super abrasives
34、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 666:2012(E)Table 1 Dimensions of grinding wheels and hub flangesGrinding wheel Hub flangeNumber and size of screwsdDaTaHaDFDiB N S Q Z Hexagon socket
35、 head cap screw in accordance with ISO 4762 min. max. min. min. min. 200 13 2050,8 85 60 6 5Tc+ 6 mm min.4 M5250 20 40200 25 12576,211585 8 5 6 M5250 20 40300 20 80350/356 32 80 125250 20 2501271651371066 M6300 20 250350/356 25 600175 126M8400/406 32 100450/457 32 80 185140 13500/508 50 80 191600/61
36、0 50 80 210 145 14 8250 25 250152,4180 162 106 6 M8300 40 250350/356 100 600 190 162 12400/406 40 50 19616512450/457 40 63 20413500/508 40 80 212 170350/356b b160b202 170 126 6 M8400/406450/457220 170 13500/508400/406 25 250203,22402151288 M8450/457 32 80260 13500/508 40 63600/610 20 100 272 148 M10
37、750/762 63 100 300 230 16500/508 25 600304,8365 315 15108 M12600/610 20 600750/762 20 600 382 320 16800/813 20 150410 330 1810 M12900/914 20 1521 060/1 067 20 150 435 330 224 ISO 2012 All rights reservedBS ISO 666:2012ISO 666:2012(E)Grinding wheel Hub flangeNumber and size of screwsdDaTaHaDFDiB N S
38、Q Z Hexagon socket head cap screw in accordance with ISO 4762 min. max. min. min. min. 900/914 20 150406,4492420 25 1510 M161 060/1 067 20 150 5201 060/1 067 63 150508602530 25 15 10 M161 250 63 150 635aDimensions in accordance with ISO 603-1, ISO 603-2, ISO 603-4, ISO 603-6, ISO 603-7 and ISO 603-8
39、; limit deviations and run-out tolerances 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 siz
40、e of the grinding wheel thickness.dThe method for calculating the necessary clamping force and screw-tightening torques is given in Annex A.4.3 Flange socketThe interface of the fixed flange and the wheel spindle cannot be specified in detail in this International Standard. In the following, differe
41、nt flange sockets are presented in Figures 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 pr
42、esented shall be favoured in use.a) Type A: flange socket for spindle with taper shank 1:10 in accordance with ISO 1119.Figure 2 Taper 1:10Table 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
43、 702-1.Figure 3 Short taper 1:4 (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 ta
44、per)6 ISO 2012 All rights 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 MaterialThe material is steel with a minimum tensile strength of 500 N/mm2; the type is left to t
45、he manufacturers discretion.4.5 MarkingHub 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
46、 the grinding 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
47、 reserved 7BS ISO 666:2012ISO 666:2012(E)Table 2 Connecting dimensions of flange socketsGrinding wheel Flange socketType A Types BF and BM Types CF and CMD H d1d2ad3b20050,8 40 53,975 48,0125020076,240 and 6353,975 and 63,51348,01 and 60,012250300350/356250127300350/356400/406450/457500/508600/61025
48、0152,480 82,563 75,013300350/356400/406450/457500/508350/356160400/406450/457500/508400/406203,2450/457500/508600/610750/762500/508304,8100 106,375 95,016600/610750/762800/813120 139,719 120,016900/9141 060/1 067900/914406,41 060/1 0671 060/1 0675081 250aComplete dimensions in accordance with ISO 70
49、2-1.bComplete dimensions in accordance with ISO 12164-1 and ISO 12164-2.8 ISO 2012 All rights reservedBS ISO 666:2012ISO 666:2012(E)5 DesignationHub flanges in accordance with this International Standard are designated as follows:a) “Hub flange”;b) reference to this International Standard, i.e. ISO 666;c) type of flange socket (A, BF, BM, CF or CM);d) diameter d1, d2or d3;e) dimensions of the grinding wheel D, T and H.EXAMPLE A hub flange with flange socket Type
