CAN CSA-E1029-2-4A-2006 Amendment 1 Safety of transportable motor-operated electric tools – Part 2-4 Particular requirements for bench grinders (First Edition).pdf

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1、Amendment 1Safety of transportable motor-operated electrictools Part 2-4:Particular requirements for bench grindersAmendement 1Scurit des machines-outils lectriques semi-fixes Partie 2-4:Rgles particulires pour les tourets meulerPRICE CODE IEC 2001 Copyright - all rights reservedInternational Electr

2、otechnical Commission 3, rue de Varemb Geneva, SwitzerlandTelefax: +41 22 919 0300 e-mail: inmailiec.ch IEC web site http:/www.iec.chJFor price, see current catalogueCommission Electrotechnique InternationaleInternational Electrotechnical CommissionAmendment 1:2006 toNational Standard of CanadaCAN/C

3、SA-E1029-2-4-94Amendment 1:2001 to International Standard CEI/IEC 1029-2-4:1993 has been adopted withoutmodification (IDT) as Amendment 1:2006 to CAN/CSA-E1029-2-4-94. At the time of publication, IECAmendment 1:2001 is available from IEC in English only. CSA will publish the French version when it b

4、ecomesavailable from IEC. This Amendment was reviewed by the CSA Technical Committee on InternationalStandards, under the jurisdiction of the Strategic Steering Committee on Requirements for Electrical Safety, andhas been formally approved by the Technical Committee. April 2006 2 61029-2-4 Amend. 1

5、IEC:2001(E)FOREWORDThis amendment has been prepared by subcommittee 61F: Safety of hand-held motor-operated electric tools, of IEC technical committee 61: Safety of household and similarelectrical appliances.The text of this amendment is based on the following documents:FDIS Report on voting61F/371/

6、FDIS 61F/386/RVDFull information on the voting for the approval of this amendment can be found in the reporton voting indicated in the above table.The committee has decided that the contents of the base publication and its amendments willremain unchanged until 2006. At this date, the publication wil

7、l bereconfirmed;withdrawn;replaced by a revised edition, oramended._Page 71 Scope1.1 Modification:Replace the first paragraph by the following:This International Standard applies to transportable bench grinders (figure 101) and combinedbench grinders (figure 107) with a wheel diameter and brush diam

8、eter not exceeding 200 mmand a peripheral speed not exceeding 50 m/s, as defined in 2.101 and 2.114.Add figure 107 as follows:Amendment 1:2006 to CAN/CSA-E1029-2-4-9461029-2-4 Amend. 1 IEC:2001(E) 3 1 - straight-sided grinding wheel 7 - nozzle for dust2 - brush 8 - on/off device3 - flange 9 - handle

9、4 - work rest 10 - spark arrestor5 - transparent screen 11 - cup shaft guard6 - guard for straight-sided wheel 12 - marking plateFigure 107 Combined bench grinderNOTE The drawings are given as a guide only.2 DefinitionsReplace definitions 2.103, 2.104 and 2.112 as follows:2.103machine spindlemotor s

10、pindle of the bench grinder or of the combined bench grinder which supports andtransmits the rotation to the grinding wheels or to the grinding wheel and/or the brush2.104nozzle for dust collectiondevice allowing the connection of a bench grinder or a combined bench grinder to a dustcollection syste

11、m2.112working speedlinear peripheral speed of the wheel or of the brush while workingAdd the following definition:2.114combined bench grindertool designed to grind metal or similar materials or to clean, polish or deburr metal or similarmaterials by means of an abrasive wheel and a brush fixed on op

12、posite ends of the machinespindle, and which is located in a proper workplace and where pieces are held by handIEC 490/01Amendment 1:2006 to CAN/CSA-E1029-2-4-94 4 61029-2-4 Amend. 1 IEC:2001(E)Page 117 Marking7.1 Addition:Add the following items: for combined bench grinders, the maximum diameter D

13、of the brush to be used; for combined bench grinders/brushes, a warning near to the brush holder spindle never touse a grinding wheel on the brush side of the machine.7.13 Addition:Replace the first paragraph as follows:The handbook or information sheet shall include all the necessary information fo

14、r safeworking with the bench grinder or combined bench grinder, such as method of operation,wheel and brush changing, maintenance, assembly, transportation, etc.Replace the second dash as follows: do not use damaged or misshapen wheels or brushes;Replace the sixth dash as follows: for bench grinders

15、 and combined bench grinders equipped with straight-sided flanges, therecommended values of the thickness T and the diameter of the hole;Add, before the note, the following additional dash: for combined bench grinders, to always keep the brush assembled on the spindle in orderto limit the risk of co

16、ntact with the rotating spindle.Page 1518 Stability and mechanical hazards18.1 Addition:Replace the first paragraph as follows:Bench grinders and combined bench grinders shall be equipped with an adequate guardingsystem, which cannot be removed without the aid of a tool.18.1.101 GuardChange the head

17、ing of this subclause as follows:18.1.101 Guard for wheelReplace the first paragraph as follows:Bench grinders and combined bench grinders shall be equipped with guards which leaveuncovered only a portion of the wheel as indicated in figure 102. Guards shall be designed tohave mechanical resistance

18、to accidental breaking of the wheels.Amendment 1:2006 to CAN/CSA-E1029-2-4-9461029-2-4 Amend. 1 IEC:2001(E) 5 Page 2318.1.101.3 Spark arrestorReplace the first paragraph as follows:Bench grinders and combined bench grinders equipped with straight-sided wheels shall havea spark arrestor to limit the

19、ejection of sparks and pieces of wheel from the wheel guard. Itsaim is also to improve the collection of dust.18.1.101.4 Work restReplace the first paragraph as follows:Bench grinders and combined bench grinders shall be equipped with work rests. This require-ment does not apply to the brush side of

20、 the combined bench grinder.Replace the fourth paragraph as follows:When the bench grinder and/or the grinder side of the combined bench grinder is fitted withan inclinable work rest, the inclination shall only be possible downwards and the tiltingupwards of the work rest shall be made impossible (f

21、igure 105).Page 2518.1.102.1 FlangeAdd a new subclause and incorporate in it the existing text of 18.1.102.1, as follows:18.1.102.1.1 Flange for wheelTable 101 gives minimal dimensions of flanges made in steel or other material of adequatestrength with minimal tensile strength of 430 N/mm2 or sinter

22、ed powder metal with minimaltensile strength of 500 Nmm2in relation to the diameter of the wheel and for a wheelthickness not exceeding 0,15 times the diameter.Divide the existing Table 101 Flange dimensions into a new Figure 108 and an amendedTable 101 as follows:Amendment 1:2006 to CAN/CSA-E1029-2

23、-4-94 6 61029-2-4 Amend. 1 IEC:2001(E)Dimensions in millimetresD Wheel nominal diameterdf Minimal external diameter of flangesr Minimal width of contact surfaceE Minimal flange thickness on flat surfaceF Minimal flange thickness on inclined surfaceT Minimal depth of recessFigure 108 Flange dimension

24、s for wheelTable 101 Flange dimensions for wheel (see Figure 108)Ddf rEFT100 34 6 5 3,2 1,5125 42 8 6 3,2 1,5150 52 9 10 5 1,5200 681)121)101)51)1,51)1) These values are valid for flanges to be used on wheelswith 200 mm nominal diameter and 30 mm thickness.Cast iron flanges shall not be used.Add the

25、 following new subclause:18.1.102.1.2 Flange for brushTable 102 gives minimal dimensions of flanges made in steel or other material of adequatestrength with minimal tensile strength of 430 N/mm2 or sintered powder metal with minimaltensile strength of 500 N/mm2 in relation to the diameter of the bru

26、sh.IEC 491/01Amendment 1:2006 to CAN/CSA-E1029-2-4-9461029-2-4 Amend. 1 IEC:2001(E) 7 Dimensions in millimetresD Brush nominal diameterdf Minimal external diameter of flangesr Minimal width of contact surfaceE Minimal flange thickness on flat surfaceF Minimal flange thickness on inclined surfaceT Mi

27、nimal depth of recessFigure 109 Flange dimensions for brushTable 102 Flange dimensions for brush (see Figure 109)DdfrEFT100 34 5 1,5 1,5 1,5125 42 5 2 2 1,5150 52 5 2,5 2,5 1,5200 68 5 2,5 2,5 1,5Cast iron flanges shall not be used.Page 2718.1.103 Transparent screensAdd a new subclause and incorpora

28、te in it the existing text of 18.1.103 as follows:18.1.103.1 Transparent screen characteristicsReplace the first three paragraphs as follows:The bench grinders and combined bench grinders shall be fitted with transparent screensdesigned to prevent projection of particles towards the eyes and the fac

29、e of the operator.The transparent screens shall be adjustable and of such dimensions that in normal positionsof grinding and polishing, including in a vertical plane above the wheel or the brush, theoperator shall see the working part of the wheel or of the brush only through the screen.The operatio

30、n of adjusting the screen shall not modify the adjustment of other parts of thebench grinder or combined bench grinder.IEC 491/01Amendment 1:2006 to CAN/CSA-E1029-2-4-94 8 61029-2-4 Amend. 1 IEC:2001(E)18.1.103.2 Minimal dimension of the transparent part of rectangular or trapezoidaltransparent scre

31、ensReplace the paragraphs after Figure 106 as follows:The minimal dimensions of the transparent part of screens for bench grinders equipped withstraight-sided cup wheels are identical to those of screens for bench grinders or combinedbench grinders equipped with straight-sided wheels. However, for b

32、ench grinders and for thegrinder side of the combined bench grinders, the thickness of straight-sided wheels shall bereplaced by the width of the working part of the straight-sided cup wheel.For all bench grinders and combined bench grinders, the screens shall be mounted in such away that the symmet

33、rical axis of the screen coincides with the vertical median plane of theworking part of the wheel or the brush (figure 106).Add the following new subclause18.1.104 Protection of the free extremity of the rotative shaft in thecombined bench grinderThe shaft part on the brush side, when not fitted wit

34、h a brush, shall be protected in order toavoid accidental contacts.Compliance is checked by applying the test pin in figure 2 of part 1.NOTE A possible solution for satisfying this requirement is shown in figure 110.Figure 11018.2 Addition:Replace the text of the subclause as follows:Bench grinders

35、and combined bench grinders shall have provisions to be fixed on a support.IEC 492/01Amendment 1:2006 to CAN/CSA-E1029-2-4-9461029-2-4 Amend. 1 IEC:2001(E) 9 Page 2920 Construction20.18 Addition:Replace the title and text of the existing subclause 20.18 by the following:20.18 Modification:Replace the existing test specification by the following:Compliance is checked by applying a sphere with a diameter of 100 mm 1 mm to the switch.It shall not be possible to start the tool by means of the sphere._Amendment 1:2006 to CAN/CSA-E1029-2-4-94ICS 25.140.20; 25.080.50