DIN EN ISO 6103-2015 Bonded abrasive products - Permissible unbalances of grinding wheels as delivered - Static testing (ISO 6103 2014) German version EN ISO 6103 2014《粘合磨料产品 交货时砂轮.pdf

1、February 2015 Translation by DIN-Sprachendienst.English price group 9No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC

2、S 25.100.70!%?cC“2286432www.din.deDDIN EN ISO 6103Bonded abrasive products Permissible unbalances of grinding wheels as delivered Static testing (ISO 6103:2014);English version EN ISO 6103:2014,English translation of DIN EN ISO 6103:2015-02Schleifkrper aus gebundenem Schleifmittel Zulssige Unwucht v

3、on Schleifscheiben im Lieferzustand Statische Prfung (ISO 6103:2014);Englische Fassung EN ISO 6103:2014,Englische bersetzung von DIN EN ISO 6103:2015-02Produits abrasifs agglomrs Balourds admissibles des meules en tat de livraison Contrle statique (ISO 6103:2014);Version anglaise EN ISO 6103:2014,Tr

4、aduction anglaise de DIN EN ISO 6103:2015-02SupersedesDIN EN ISO 6103:2005-07www.beuth.deDocument comprises 14 pagesIn case of doubt, the German-language original shall be considered authoritative.01.15 DIN EN ISO 6103:2015-02 2 A comma is used as the decimal marker. National foreword This document

5、(EN ISO 6103:2014) has been prepared by Technical Committee ISO/TC 29 “Small tools”, Subcommittee SC 5 “Grinding wheels and abrasives” in collaboration with Technical Committee CEN/TC 143 “Machine tools Safety” (Secretariat: SNV, Switzerland). The responsible German body involved in its preparation

6、was the DIN-Normenausschuss Werkzeuge und Spannzeuge (DIN Standards Committee Tools and Clamping Devices), Working Committee NA 121-04-04 AA Schleifkrper aus gebundenem Schleifmittel. For more detailed information about the DIN-Normenausschuss Werkzeuge und Spannzeuge (FWS), please visit www.fws.din

7、.de. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 603-1 DIN ISO 603-1 ISO 603-2 DIN ISO 603-2 ISO 603-3 DIN ISO 603-3 ISO 603-4 DIN ISO 603-4 ISO 603-5 DIN ISO 603-5 ISO 603-6 DIN ISO 603-6 ISO 603-7 DIN ISO 603-7 ISO 603-8 DIN ISO 6

8、03-8 ISO 603-9 DIN ISO 603-9 ISO 603-12 DIN ISO 603-12 ISO 603-13 DIN ISO 603-13 ISO 603-14 DIN ISO 603-14 ISO 603-15 DIN ISO 603-15 ISO 603-16 DIN ISO 603-16 ISO 603-18 DIN ISO 603-18 Amendments This standard differs from DIN EN ISO 6103:2005-07 as follows: a) the scope has been amended with respec

9、t to minimum outside diameters; b) normative references to the ISO 603 series have been deleted; c) types of bonded abrasive products for hand-held grinding machines in Table 1 have been supplemented; d) diameter ranges in Table 1 have been corrected; e) a Bibliography has been included; Previous ed

10、itions DIN 69106: 1949-02 DIN V 69106: 1977-09, 1988-07 DIN EN ISO 6103: 2000-08, 2005-07 DIN EN ISO 6103:2015-02 3 National Annex NA (informative) Bibliography DIN ISO 603-1, Bonded abrasives products Dimensions Part 1: Grinding wheels for external cylindrical grinding between centres DIN ISO 603-2

11、, Bonded abrasives products Dimensions Part 2: Grinding wheels for centreless external cylindrical grinding DIN ISO 603-3, Bonded abrasives products Dimensions Part 3: Grinding wheels for internal cylindrical grinding DIN ISO 603-4, Bonded abrasives products Dimensions Part 4: Grinding wheels for su

12、rface grinding/peripheral grinding DIN ISO 603-5, Bonded abrasives products Dimensions Part 5: Grinding wheels for surface grinding/face grinding DIN ISO 603-6, Bonded abrasives products Dimensions Part 6: Grinding wheels for tool and tool room grinding DIN ISO 603-7, Bonded abrasives products Dimen

13、sions Part 7: Grinding wheels for manually guided grinding DIN ISO 603-8, Bonded abrasives products Dimensions Part 8: Grinding wheels for deburring and fettling/snagging DIN ISO 603-9, Bonded abrasives products Dimensions Part 9: Grinding wheels for high-pressure grinding DIN ISO 603-12, Bonded abr

14、asives products Dimensions Part 12: Grinding wheels for deburring and fettling on a straight grinder DIN ISO 603-13, Bonded abrasives products Dimensions Part 13: Grinding wheels for deburring and fettling on a vertical grinder DIN ISO 603-14, Bonded abrasives products Dimensions Part 14: Grinding w

15、heels for deburring and fettling/snagging on an angle grinder DIN ISO 603-15, Bonded abrasives products Dimensions Part 15: Grinding wheels for cutting-off on stationary or mobile cutting-off machines DIN ISO 603-16, Bonded abrasives products Dimensions Part 16: Grinding wheels for cutting-off on ha

16、nd held power tools DIN ISO 603-18, Bonded abrasives products Dimensions Part 18: Grinding wheels for flat glass edge grinding machines ISO 603-17, Bonded abrasive products Dimensions Part 17: Spindle mounted wheels DIN EN ISO 6103:2015-02 4 This page is intentionally blank EUROPEAN STANDARD NORME E

17、UROPENNE EUROPISCHE NORM EN ISO 6103 October 2014 ICS 25.100.70 Supersedes EN ISO 6103:2005English Version Bonded abrasive products - Permissible unbalances of grinding wheels as delivered - Static testing (ISO 6103:2014) Produits abrasifs agglomrs - Balourds admissibles des meules en tat de livrais

18、on - Contrle statique(ISO6103:2014) Schleifkrper aus gebundenem Schleifmittel - Zulssige Unwucht von Schleifscheiben im Lieferzustand - Statische Prfung (ISO 6103:2014) This European Standard was approved by CEN on 6 September 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regul

19、ations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN membe

20、r. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CE

21、N members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,

22、Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in a

23、ny form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 6103:2014 EContents PageForeword . 31 Scope . 42 Terms and definitions . 43 Permissible unbalance, Ua64 Measuring intrinsic unbalance 65 Checking intrinsic unbalance 75.1 Verification and acceptance .75.2 Determina

24、tion of ma75.3 Acceptance testing of the grinding wheel 8Bibliography 10DIN EN ISO 6103:2015-02 EN ISO 6103:2014 (E) 2DIN EN ISO 6103:2015-02 EN ISO 6103:2014 (E) Foreword This document (EN ISO 6103:2014) has been prepared by Technical Committee ISO/TC 29 “Small tools“ in collaboration with Technica

25、l Committee CEN/TC 143 “Machine tools - Safety” the secretariat of which is held by SNV. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2015, and conflicting national standards shall be wit

26、hdrawn at the latest by April 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 6103:2005. Accordi

27、ng to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, G

28、reece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 6103:2014 has been approved by CEN as EN ISO 6103:2014 with

29、out any modification. 31 ScopeThis International Standard specifies the maximum permissible values of unbalances for bonded abrasive wheels with an outside diameter D 125 mm and maximum operating speed vs 16 m/s, in the as-delivered condition.It also specifies the method for measuring the unbalance

30、and the practical method for testing whether a grinding wheel is acceptable or not.This International Standard is applicable to bonded abrasive wheels in the as-delivered condition.This International Standard is not applicable to diamond, cubic boron nitride or natural stone grinding wheels, or cent

31、reless control wheels, lapping and disc wheels, ball wheels or glass grinding wheels.NOTE 1 The values given refer to the grinding wheel itself, independent of any unbalance which may exist in the balancing arbor or in the means of fastening it to this arbor. These various elements, together with th

32、e flanges or hub-flanges, are assumed to be balanced, homogeneous and free from geometrical defects.NOTE 2 The effects of unbalance are basically additional stresses on the arbor, the machine and its mounting, excessive wear of the bearings, vibration prejudicial to the quality of machining and incr

33、eased internal stresses in the grinding wheel, and increased operator fatigue.2 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.2.1unbalanceproduct of radius and massNote 1 to entry: Radius is expressed in millimetres. Mass is expressed in grams. The

34、 product of radius and mass is expressed in grams multiplied by millimetres.2.2intrinsic unbalance of a grinding wheelUiproduct of the mass m1of the grinding wheel and the distance e between its centre of mass G (centre of gravity) and the axis O of its boreNote 1 to entry: See Figure 1.DIN EN ISO 6

35、103:2015-02 EN ISO 6103:2014 (E) 4Figure 1 Intrinsic unbalance of a grinding wheel2.3measured unbalanceUcproduct of a mass m2, affixed to the grinding wheel to balance it and the distance between the centre of mass (Gm2) (centre of gravity) of the mass m2and the axis O of the grinding wheel boreNote

36、 1 to entry: See Figure 2.Note 2 to entry: In practice, this distance is equal to the radius r of the grinding wheel.Key1 mass m2Figure 2 Measured unbalanceDIN EN ISO 6103:2015-02 EN ISO 6103:2014 (E) 5 3 Permissible unbalance, UaOn the basis of experience, the maximum permissible unbalance Uais det

37、ermined using a mass ma= Ua/r, such thatmkma=1(1)wherer is the radius of the grinding wheels, in millimetres;mais the mass whose centre is located on the circumference of the grinding wheel, in grams;m1is the mass of the grinding wheel, in grams;k is a coefficient which depends on the nature and usa

38、ge of the grinding wheel.The values of k are given in Table 1 and the values of ma, as a function of m1and k, are shown in Figure 5.The values of k have been selected on the basis of experience so that the resulting unbalance allows for normal usage of the grinding wheel.4 Measuring intrinsic unbala

39、ncePlace a balancing arbor through the bore of the grinding wheel to hold its mid-plane in a vertical position. For straight wheels or wheels of similar shape, the wheel is free-standing; wheels of other shapes may be supported using suitable flanges.Rest the balancing arbor on two parallel horizont

40、al bevelled guide-bars or cylindrical bars (see Figure 3), or on a balancing stand consisting of two pairs of overlapping, freely rotating, steel discs (see Figure 4), so that the grinding wheel attains an equilibrium position with minimum friction.Alternative: The two bevelled guide-bars may be rep

41、laced by two cylindrical bars.Figure 3 Balancing arbor on guide barsDIN EN ISO 6103:2015-02 EN ISO 6103:2014 (E) 6Figure 4 Balancing arbor on steel discsThe clearance between the balancing arbor and the bore of the grinding wheel shall not exceed 0,4 mm.The arbor and the supports (guide-bars, bars o

42、r discs) shall have an adequate surface hardness and an appropriate surface condition to minimize friction.When the grinding wheel attains the equilibrium position, its centre of mass is then as low as possible. In this position, mark the upper peripheral point of the grinding wheel.Rotate the grind

43、ing wheel through 90 to bring this mark into the horizontal plane for the arbor axis.Determine the mass m2which, when affixed to the periphery of the grinding wheel at the mark, maintains the grinding wheel in equilibrium. The amount of unbalance thus introduced, Uc= m2 r, is equal and opposite to t

44、he intrinsic unbalance of the wheel.The value of the mass m2is used to determine the intrinsic unbalance of the wheel using Formula (2):UUmric2= (2)5 Checking intrinsic unbalance5.1 Verification and acceptanceVerify the intrinsic unbalance according to the method specified in Clause 4.A grinding whe

45、el is only acceptable if its intrinsic unbalance Uiis less than or equal to the permissible unbalance Ua, i.e.Ui Ua(3)The testing is done with a massmUraa= (4)5.2 Determination of maFrom Table 1, determine the coefficient k by reading off the value according to the various parameters related to the

46、grinding wheel and its application.Figure 5 then gives the values of the mass ma, in grams, as a function of the mass m1of the wheel, in grams, and the coefficient k.DIN EN ISO 6103:2015-02 EN ISO 6103:2014 (E) 7 5.3 Acceptance testing of the grinding wheelWith the grinding wheel mounted in accordan

47、ce with Clause 4, place a mass maas determined in 5.2 on the periphery of the grinding wheel at the mark. If the wheel remains stationary or rotates so that the mark is at the bottom, the grinding wheel is accepted; otherwise, it is rejected.Table 1 Values of the coefficient k for bonded abrasive productsGrinding methodType of machineType of bonded abrasive productDimensions Coefficient k for maximum operating speed vsD Tmm mm m/s16 vs 40 40 180T 6 0,40 0,32 0,20T 6 0,32 0,25 0,20Types 6 and 11all dimensions 0,40 0,32 Grinding (deburring, fettling and snagging)Stationary grinding