JIS B 2710-3-2021.docx

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1、JISJAPANESEINDUSTRIA1.STANDARDTrans1.atedandPub1.ishedbyJapaneseStandardsAssiatnJISB2710-3的(JSMA/JSA)1.eafsprings-PartS:MethodofmeasuringandtestingICS21.160Referncnumber:JISB27103:2021(E)DateofEstab1.ishment20080320DateofRevision-2021-1.1.22DateofPub1.icNoticeinOfficia1.Gazette-20211.1.22Investigate

2、dby：JapaneseIndustria1.StandardsCommitteeStandardsHoardforISOareaJ1.SB2710-3:202bFirstEng1.isheditionpub1.ishedin2022-03Trans1.atedandpub1.ishedby:JapaneseStandardsAssociationMiUMTBUiIdi呷3-13-12,MMMinawkU,Tokyo,108-0073JAPAX!ntheCVentofanydoubtsarisingastothecontents,theorigina1.J1.Sistobethefina1.a

3、uthority.JSA2022A1.1.righMrv*rvM.1.nkMonnuybereproducedaru1.UUedinanyfndspecifiedforcetobeusudasareferenceforsp11nCharactcrieticeeva1.uationN2Fm.maximumworkingforceNRhorizonta1.forceinwind-upcharactcristictestNFfrictionforcebetween1.eavesNJarm1.engthinwind-upcharacteristicstostmm/hdistancebetweenthe

4、eyecentreandtheendoftheKriPperineyefatiguetestmmveccentricitybetweenthecyocentreandthecentreofforceinputmmNnumberofcyc1.esinCorrottionfatiguetest&dynamicspringrateN/mm力def1.ectionat2Fmm$2def1.ectionat2F：mm%def1.ectionamp1.itudemmdef1.ectionat2Ent,mmstrain5 Measuringdevicesandtestapparatuses5.1 Gener

5、a1.Thedevicesandapparatusesusedformeasurementandtestingofspringssha1.1.：a) becapab1.eofprovidingre1.iab1.emeasurement/tests；b) bese1.ectedinconsiderationofthesizeofthespringundertest,measurementposition.measurement1.ocationandrequiredmeasurementaccuracyetcJc) meetthecapacityandComPatibiIityrequireme

6、ntsagreedbetweenthepartiescon,cemed.withtheirconformitytotheserequirementsguaranteedbythemanufacturer；d) havetheiraccuraciesperiodica1.1.ychecked.6.2MeasuringdevicesThedevicesusedformeasurementsha1.1.beasfo1.1.ows.a) Thedia1.gaugeformeasurementsspecifiedin6.5sha1.1.beinaccordancewithJISB7503.b) Thec

7、a1.1.iperusedformeasurementsspecifiedin6.5sha1.1.beinaccordancewithJISB7507.c) Thestee1.tapeformeasurementspecifiedin6.6.3sha1.1.beinaccordancewithJISB7512.d) Thestee1.straightedgeusedformeasurementspecifiedin6.3sha1.1.beinaccordancewithJISB7514.e) Themeta1.ru1.eusedformeasurementspecifiedin6.6.3sha

8、1.1.beinaccordancewithJISB75160Theheightca1.1.iperusedformeasurementsspecifiedin6.5sha1.1.beinaccordancewithJISB7517.g) Thecompressiontestingmachineusedformeasurementsspecifiedin6.6shaDbeinaccordancewithJISB7721.h) TheBrine1.1.hardnesstesterusedformeasurementspecifiedin6.2sha1.1.beinaccordancewithJI

9、SB7724.5.3Testapparatuses5.3.1 TestapparatusforspringcharacteristicstetThetestapparatussha1.1.becapab1.eofsupportingthespringundertest8tab1.y,app1.yingacontinuous1.yandsmooth1.yvariedstatictestforcetothespring,andsha1.1.beequippedwithamechanismformeasuringforceanddef1.ection.Itsha1.1.usesupportswith

10、ro1.1.ersorothersuitab1.emeanstosupportthespringwithoutobstructingthedeformationandwithminima)friction.nexamp1.eoftypica1.pressingfixtureusedforautomobi1.espringsisshowninFigure1.Thetestforceisapp1.iedviathispressingfixturep1.acedonthe1.oadingpointasshowninFigure2.Inthecaseofaspringwithaband,andthet

11、estforcemaybeapp1.ieddirect1.ytothecentreofthebandturewithouttheuseofthepressingfixture.UniUmm1.eafwidthFigure1EXS1.mP1.eofpressingfixtureFigure2Examp1.eofsetupforsupportingthespringinspringcharacteristicsteat6.3.2 TeetapparatusfordynamicprmgCharacteristicetestThetestapparatussha1.1.becapab1.eofsupp

12、ortingthespringunderteststab1.yinsuchawaythatthespringcanexhibitthefunctionitisexpectedtoinservicecondition,capab1.eofapp1.yingthedef1.ectionata1.eve1.SPeCifiedbythec1.ientrepeated1.ythroughdef1.ectioncontro1.,andequippedwithamechanismformeasuringandrecordingboththetestforceanddef1.ection.Themeasure

13、mentmaybeperformedinastaticmannerasthedynamicspringrateofthe1.eafspringdoesnotdependonthefrequencyinthefrequencyrangeof5Hzorunder.6.3.3 Testapparatusforwind-upCharacterieticetetThetestapparatussha1.1.becapab1.eofsupportingthespringatbothendsinaconditionsimu1.atingthenorma1.service,andapp1.yingthepos

14、itiveandnegativewind-uptorqueswhi1.eapp1.yingtheworkingforceon1.eafspring2FspecifiedinJISB27152atthecentreofthespring.Itsha1.1.beequippedwithamechanismformeasuringthecentreofspringrotationbytorqueorthe1.ocationandrotationoftheindexprovidedinitsvicinity.Theapp1.iedforce2Fsha1.1.beequa1.tothenomina1.w

15、orkingforce,un1.essotherva1.ueofapp1.iedforcehasbeenagreedbetweenthepartiesconcerned.Theapparatussha1.1.becapab1.eofmaintainingtheapp1.iedforceconstantatthenomina1.workingforceduringthetest,andincreasingthewind-uptorquegradua1.1.yandsmooth1.yuptothe1.eve1.specifiedbythec1.ient.nexamp1.eofstandardset

16、upforwind-upcharacteristicstestisshowninFigure3.Thisexamp1.eshowsaconstructioninwhichthewind-uptorqueisapp1.iedthroughthehorizonta1.forceFwworkingontheheadofthearmattachedtothecentrepartofthespring.Thearm1.ength1.(mm)fromthecentreho1.epartofthempreRionsidesurfaceofthe1.ast1.eaftotheworkingpointPofho

17、rizonta1.forceF.(N)sha1.1.beasagreedbetweenthepartiesconcerned.Thewind-uptorque7t(Nmm)sha1.1.beobtainedbyFormu1.a(1):Sincethewind-upoccursinaspringinsta1.1.edinanautomobi1.ewhentheautomobi1.eacce1.eratesordece1.erates,thearm1.ength1.visnorma1.1.ymadeequa1.tothedistancebetweenthecentreoftheax1.eandth

18、egroundcontactpointofthetyre.6.3.4 Testapparatusforvertica1.fatiguetestThetestapparatussha1.1.becapab1.eofsupportingthespringatbothendsinsuchawaythatthespringcanexhibitthefunctionitisexpectedtoinnorma1.servicecondition,capab1.eofapp1.yingrepeated1.oadtothecentreofworkingforceatthecentreofthespringto

19、givethedef1.ectionSpecifiedin5.S.2repeated1.y.Itsha1.1.thereforebeequippedwithadevicecapab1.eofdynamicmeasurementofforceanddef1.ectionaswe1.1.asarecordingdevice.nexamp1.eofstandardsetupforvertica1.fatiguetestisshowninFigure4.Figure4Examp1.eofsetupfor8uppoxtinthspringinvertica1.fatiguett6.3.5 Testapp

20、aratusforeyefatiguetestAgenera1.fatiguetestingmachinesha1.1.beused.Anexamp1.eofsetupforsupportingthetestpiecespecifiedin6.10.1foreyefatiguetestisshowninFigure5.Theeyesha1.1.beattachedbyaspringpinoranequiva1.entpinusingaspringbracketoranequiva1.entjiginagreementwiththeactua1.conditionofnorma1.use.and

21、1.ubricatedasrequired.Theeccentricityvbetweentheeyecentreandthecentreofforceinputisnorma1.1.ytakenaszero,un1.essotherva1.ueofvhasbeenagreedbetweenthepartiesncernedtakingacuntoftheactua1.conditionofnorma1.use.Thedistance1.betweentheeyecentreandtheendofthegrippersha1.1.benot1.essthanthe1.eafwidth.Whet

22、herornottouseabushforthetestsha1.1.beasagreedbetweenthepartiesconcerned.EyoundertestDynamometerFatiutestingmachineFigureExamp1.eOfsetupforsupportingthetestpieceineyefatiguett6Meaexirementandtestingmethods6.1 MeasurementandtetenvironmentThemeasurementsandtestssha1.1.beperformedintheenvironmentatatemp

23、eratureof20上15andare1.ativehumidityof(6520)%inacrdancewithJ1.SZ8703.Forperformingatestunderaspecia1.environment,e.g.atane1.evatedtemperature,theenvironmenta1.conditionssha1.1.beasagreedbetweenthepartiesconcerned.6.2 Brioe1.1.hardnessmeasurementTheBrine1.1.hardnesstestsha1.1.beperformedatthatsideofth

24、efixedpartofthe1.eafcentrewherecompressionstressisproduced,usingthemethodspecifiedinJISZ2243-1.Ifasignificant1.eve1.ofdecarburizationisobserved,thetestmethodspecifiedin6.1ofJISG0558orJISZ2244-1sha1.1.beused.Inthistest,thecompressedsidesurfaceofthe1.eafsha1.1.be1.ight1.ymachinedand/orpo1.ishedpriorto

25、themeasurement.6.3 SurfaceconditionThespringsurfacesha1.1.bevisua1.1.yinspectedforroughness,f1.awsandotherdetrimenta1.defects.6.4 ShotpeeningTheshotpeeningtestsha1.1.beasfo1.1.ows.a) Measurementof1.menarcheightsha1.1.beinaccordancewithC1.ause6,C1.ause7andAnnexCofJISB2711.b) Eva1.uationofcoveragesha1

26、.1.beinaccordancewithC1.ause8andAnnexAofJISB2711.c) Measurementofcompressiveresidua1.stresssha1.1.beinaccordancewithC1.ause11andAnnexJBofJ1.SB2711.Thecompressiveresidua1.stressmeasurementmaybeomittedbyagreementbetweenthepartiesconcerned.6.5 Measurementofshapeanddimensions6.5.1 Genera1.Theshapeanddim

27、ensionsmaybemeasuredbyadirectmethodusingameasuringdevicesuchasaca1.1.iper,heightca1.1.iperordia1.gaugetobebroughtintodirectCOntactwiththespring,anoptica1.methodusingaprojector,camera,etc.oranon-contactmethodusing1.aserorothere1.ectronicmeans.1.imitgaugesareusedforverifyingtheconformitytothespecified

28、to1.erancesandnotformeasuringthedimensions.Meas*urementsha1.1.beperformedfortheitemsspecifiedbythec1.ientaswe1.1.asthosespecifiedin6.5.2to6.5.9.Thechoiceofthemeasuringmethodis1.efttotheagreementbetweenthepartiesconcerned.6.5.2 Centreho1.eThediameterofthecentreho1.esha1.1.bemeasuredbydirect,optica1.o

29、rnon-contactmethod.Eordirectmethod,aca1.1.iperistypica1.1.yused.Ifthespringhasreceivedcomerpressing(seeNo.6213ofJISB0103)orchamfering,measurementsha1.1.bemadeintheinsideofthecentreho1.ewhichisunaffectedbythesaidprocesses.6.5.3 InsidediameterofeyeTheinsidediameteroftheeyesha1.1.bemeasuredbydirectmeth

30、od,optica1.methodorbyusinga1.imitgauge.Fordirectmethod,aca1.1.iperistypica1.1.yused.Theshapeanddimensionsofthe1.imitgaugesha1.1.beasagreedbetweenthepartiesconcerned.6.5.4 Inc1.inationofeyeaxisTheinc1.inationofthemeta1.*busheyeaxisasi1.1.ustratedinFigure6sha1.1.bemeaf1.-uredinaccordancewithFigure7.Fo

31、rmeasuringtheinc1.inationoftherubberbusheyeaxis,themethodusedsha1.1.beagreedbetweenthepartiesncernedbyreferringtoFigure7.Unit：mmFigure6Inc1.inationofmeta1.vbusheyeaxis.6.5.5 WidthofeyeThewidthoftheeyesha1.1.bemeasuredbydirectmethod,optica1.methodorbyusinga1.imitgauge.Fordirectmethod,aca1.1.iperistyp

32、ica1.1.yused.Theshapeanddimenionsofthe1.imitgaugesha1.1.beasagreedbetweenthepartiesconcerned.6.5.6 Second1.eafwrapperThedimensionsofthesecond1.eafwrapperasspecifiedin9.5.2ofJISB27104sha1.1.bemeasuredbydirectoroptica1.method.Fordirectmethod,aca1.1.iperistypica1.1.yused.6.5.7 Assemb1.edwidthTheassemb1

33、.edwidthsha1.1.bemeasuredbydirectmethod,optica1.methodorbyusinga1.imitgauge.Fordirectmethod,aca1.1.iperistypica1.1.yused.Theshapeanddimensionsofthe1.imitgaugesha1.1.beasagreedbetweenthepartiesconcerned.6.5.8 1.engthofbandThe1.engthofthebandasi1.1.ustratedinFigure24andKgure25ofJISB271(h4sha1.1.bemeas

34、uredbydirectoroptica1.method.Fordirectmethod,aca1.1.iperistypica1.1.yused.6.6.9Spring-hangerho1.eThesizeandeccentricityofaSpringrhangerho1.easspecifiedinTab1.e17ofJISB2710-4sha1.1.bemeasuredbydirectoroptica1.method.Fordirectmethod,aca1.1.iperistypica1.1.yused.6.6Springcharacteristicstest6.6.1 Genera

35、1.Springcharacteristicsaredefinedbythere1.ationshipbetweentheforceapp1.iedtoaspringanddef1.ectionofthespringcausedbyit.Thespringcharacteristicstestisperformedtodeterminethisre1.ationshipbyapp1.yingagivenforcetoaspringbymeansofacompressiontestingmachineandmeasuringtheresu1.tingdef1.ectionofthespring.

36、Thetestmethoddescribedhereinon1.yconsidersbasicmu1.ti1.eafsprings,butshou1.da1.sobeapp1.iedfortestingothersprings.Thistestdoesnotapp1.ytotrai1.ing1.eaves.springtobetestedissubjectedtothemaximumworkingforceSPeCifiedbythec1.ientpriortothetesttomakesureitenduresit.6.6.2 Measurementofdef1.ectionApp1.yastaticforcetothespringundertestbygradua1.1.yincreasingituptothemaximumworkingforce,reducetheforcetozero,thengradua1.1.yincreasetheforceagainan