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1、JISJAPANESEINDUSTRIA1.STANDARDTrans1.atedandPub1.ishedbyJapaneseStandardsAssociationJISB1864-(JBMASA)Synchronousbe1.tdrivesBe1.tsandpu1.1.eysICS21.220.10；43.060.10Refeenconumber:JISB1864:2021(E)DateofEstab1.ishment2021.0222DateofPub1.icNoticeinOfficia1.Gazette.20210222InvestigatedbyJaPaneSeIndustria
2、1.StandardsCommitteeStandardsBoardforISOareaJ1.SB1864:2O2bFirstEng1.isheditionpub1.ishedin2022X)4Trans1.atedandpub1.ishedby:JapaneseStandardsAssociationMiUMTBUiIdi呷3-13-12,MMMinawkU,Tokyo,108-0073JAPAX!ntheCVentofanydoubtsarisingastothecontents,theorigina1.J1.Sistobethefina1.authority.JSA2022A1.1.ri
3、ghMrv*rvM.1.nkMonnuybereproducedaru1.UUedinanyfmorbyany11vjm,e1.ectronsorInedUnka1.IIKhJdMgphotocopyingandmk*rofi1.m,withoutPCrmiX1.CtonmwritingfromthrpubUchc.PrintedinpanHT/HNContentsPageIntroduction11 Scope12 Normativereferences13 Termsanddefinitions24 C1.assification25 Be1.tdesignation26 Be1.tstr
4、ucture37 Be1.tPromeS/dimensionsandto1.erances7.1 Be1.tprofi1.esanddimensionsZandZB7.2 Be1.tprofi1.esanddimensionsZHandYH7.3 Be1.tprofi1.esanddimensionsZRandYR7.4 Be1.tprofi1.esanddimensionsZSandYS77.5 To1.erancesforbe1.tpitch1.engthandcentredistancevariation77.6 To1.erancesforbe1.twidthand1.atera1.r
5、unout88 Be1.ttestmethods88.1 Measurementsofbe1.tpitch1.engthandcentredistancevariation88.2 Measurementofbe1.trunout138.3 Measurementofbe1.twidth149 Be1.tmarking1410 Ru1.1.eydesignation1511 ProfIIeSanddimensionsofpu1.1.eytthc1.earance151.1 1ZandZB151.2 2ZHandYH161.3 3ZRandYR181.4 4ZSandYS2012 I11eydi
6、mensionsandto1.erances2012.1 Deviationofpitchbetweenadjacentteethandtota1.deviation2012.2 Outsidediameterto1.erances2112.3 Minimumpu1.1.eywidth-2112.4 F1.angedimensions2212.5 Otherpu1.1.eyto1.erances2213 Pu1.1.eytestmethods2413.1 Genera1.2413.2 Grooveprofi1.e24(i)ForcuordThisJapaneseIndustria1.Stand
7、ardhasbeenestab1.ishedbytheMinisterofEnomy,TradeandIndustrythroughde1.iberationsattheJapaneseIndustria1.StandardsCommitteeaccordingtotheproposa1.forestab1.ishmentofJapaneseIndustria1.Standardsubmittedbyz11eJapanBe1.tingManufacturersAssociation(JBX1.AVJapaneseStandardsAssociation(JSA)withadraftbeinga
8、ttached,basedontheprovisionofArtic1.e12.paragraph(1)oftheIndustria1.StandardizationAct.ThisJISdocumentisprotectedbytheCopyrightct.Attentionisdrawntothepossibi1.itythatsomepartsofthisStandardmaynf1.ictwithpatentrights,pub1.ishedpatentapp1.icationoruti1.itymode1.rights.There1.evantMinisterandtheJapane
9、seIndustria1.StandardsCommitteearenotresponsib1.eforidentifyinganyofsuchpatentrights,pub1.ishedpatentapp1.icationoruti1.itymode1.rights.(iii):BIank1.Synchronousbe1.tdrivesBe1.tsandpu1.1.eysIntroductionThisJapaneseIndustria1.StandardhasbeenpreparedbasedonISO21342:2019,Edition1withsomemodificationsoft
10、hetechnica1.ntentsforcorrespondingparts(profi1.esanddimensions)butaddingsomeJISspecificationcontents(measuringmethod,markingetc.)thatarenotgiveninthesaidcorrespondingInternationa1.Standard.Thevertica1.1.inesonbothsidesanddottedunder1.inesindicateadditionstothecorrespondingInternationa1.Standard.1.is
11、tofmodificationswiththeexp1.anationsisgiveninAnnexJA-1 ScopeThisStandardBPeeifiegthePrOfneB/dimensionsofsynchronousbe1.ts(hereafterreferredtoasbe1.ts)andtheirre1.atedpu1.1.eys(hereafterreferredtoaspu1.1.eys)foruseinautomotiveapp1.icationsandgen?Ia1.iPd里且Uia1.留uip.ment坐UCh且艮.intWrn我.1.s9mbSnenginesOf
12、agricu1.Ma】machinery.NOTETheInternationaStandardcorrespondingtothisStandardandthesymbo1.ofdegreeofcorrespondenceareasfo1.1.ows.ISO21342:2019Synchwnousbe1.tdrivesAutomotivebe1.tsandpub/即S(MOD)Inaddition,symbo1.swhichdenotethedegreeofcorrespondenceinthecontentsbetweenthere1.evantInternationa1.Standard
13、andJISareIDT(identica1.).MOD(modified),andNEQ(notequiva1.ent)accordingtoISO/IECGuide21。12 NormativereferencesThefo1.1.owingstandardscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthisStandard.Themostrecenteditionsofthestandards(inc1.udingamendments)indicatedbe1.owsha1.1.beap
14、p1.ied.JISBO601.9Goometric1.Product.Specificatigns.(GPS.Surface.texturet,Pp1.emethM=TermB1.def1.nitiQnfdwurmceICKtUreParam典raJISB17573Eva1.uationofinstrumentsforthemeasurementofindividuaIgears一Part3:He1.ixmeasurementUsingp1.ineartifactsJISB17574Eva1.uationofinstrumentsforthemeasureientOfindiVidUaIKa
15、rsPart4:PitChmeasurementUAinESDhereartifactsJISB1859Srnchronousbe1.tdrivesVocabu1.ary.JISB7502MiCrometerS2JISB7507Vernier,dia1.anddigita1.ca1.1.ipers3 TermsanddefinitionsForthepurposeofthisStandard,thetermsanddefinitionsgiveninJISB1859.andthefo1.1.owingapp1.y.3.1pitchCircumferenceva1.ueobtainedbvmu1.tip1.yingthepu1.1.cvtoothpitch(Pb)bythenumberofpu)1.cvteeth4 C1.asaiiicationThebe1.tsandpu1.1.eysareC1.aSSifiedintoeighttypesaccordingtothecombinationofthetoothpitchandbasictoothprofi1
