KISSsoft塑料齿轮齿廓修形篇

Dipl.Ing.ETHHanspeterDinnerGearConsultancybyEESKISSsoftGmbH,[e-mail]nsultancybyEESKISSsoftGmbH,[e-mail]2013-07-21Page2PlasticgearprofileoptimisationWewilllookatthefollowingprofilemodifications1)Tipandrootrelief2)Profilecrowning/barelling(centricandeccentric)3)PressureanglemodificationWewilllearnaboutafunctionhowtofindthebestpossiblecombinationofprofilemodificationsNotethatyoushouldapplyatiproundingbeforeyouusethebelowfunctionbecausethetiproundingaffectsthetipformdiameterdFa!Dipl.Ing.ETHHanspeterDinnerGearConsultancybyEESKISSsoftGmbH,[e-mail]2013-07-21Page31)ProfilemodificationsDipl.Ing.ETHHanspeterDinnerGearConsultancybyEESKISSsoftGmbH,[e-mail]2013-07-21Page4ProfilemodificationsBasicconsiderationsThebasictaskis-Findasuitableprofilemodification-Thatgivesgoodresultsintermsofe.g.-Lowpeak-to-peaktransmissionerror-Lowwearrate-Lowcontactstress-…-Undertheconditionthatitworksfordifferentloadlevels-AndthenexporttheresultinggeometryfortoolingThekeydifficultyis:ONEmodificationshouldbesuitableforMANYloadlevels.Forexample,amodificationthatgiveslowvibrationataparticularloadlevelbuthighvibrationatanotherisNOTsuitable.Dipl.Ing.ETHHanspeterDinnerGearConsultancybyEESKISSsoftGmbH,[e-mail]2013-07-21Page5ProfilemodificationsDefinitionsinKISSsoftThedesignofgearmodifications(forplasticgears,mostlyprofilemodifications)isoneofthekeytasksforhighperformancegears,wherehighperformancemaybedefinedas,amaximizedtorquecapacity,minimizedvibrationlevelorlowestwearrisk.Gearmodifications,orthegearmicrogeometry,areassessedinthetoothcontactanalysisTCAwherethetruegeargeometry,consideringbothgearmacroandmicrogeometryandgearmisalignment.Theprofilemodificationmaybeconsideredasatoothformmodificationandarediscussedhere.Thetoothcontactanalysisisnotdiscussedhere.FortolerancebandsrefertoANSI/AGMA2000-A88,ISOTR10064-1.ForprofilemodificationsinKISSsoft,ISO21771isusedmostly.Dipl.Ing.ETHHanspeterDinnerGearConsultancybyEESKISSsoftGmbH,[e-mail]2013-07-21Page6ProfilemodificationsTipandrootreliefTipandrootreliefCαaCαf:-Tipreliefmaybeaddedtogear1orgear2orbothinamesh.Ifyouwanttoconsiderthemodificationonbothgears,usetwolines.-Selectthetypeoftiprelieffromthelist„Typeofmodification“-In„Value“,enterthevalueforCαaandCαfinum-„Factor1“definesthelengthoftherelief/it‘sstartposition,asamultipleofthemodule,measuredfrompointAandErespectively-Usingtheflag„Status“,youmayuse/notusethemodificationinaparticularcalculation.Dipl.Ing.ETHHanspeterDinnerGearConsultancybyEESKISSsoftGmbH,[e-mail]2013-07-21Page7ProfilemodificationsDifferenttypesoftip/rootreliefDipl.Ing.ETHHanspeterDinnerGearConsultancybyEESKISSsoftGmbH,[e-mail]2013-07-21Page8ProfilemodificationsDifferenttypesoftip/rootreliefDipl.Ing.ETHHanspeterDinnerGearConsultancybyEESKISSsoftGmbH,[e-mail]2013-07-21Page9ProfilemodificationsDifferenttypesoftip/rootreliefDipl.Ing.ETHHanspeterDinnerGearConsultancybyEESKISSsoftGmbH,[e-mail]2013-07-21Page10ProfilemodificationsDifferenttypesoftip/rootreliefDipl.Ing.ETHHanspeterDinnerGearConsultancybyEESKISSsoftGmbH,[e-mail]2013-07-21Page11ProfilemodificationsDifferenttypesoftip/rootreliefDifferenttypesoftipandrootrelief:-Therearefortypes:linear,curved(circular),progressive(polynom)andcurvedwithtransitionradiusDipl.Ing.ETHHanspeterDinnerGearConsultancybyEESKISSsoftGmbH,[e-mail]2013-07-21Page12ProfilemodificationsProgressivereliefThecurvatureoftheprogressivereliefmaybechanged:-Use„Factor2“todefinethe„factor“inthebelowformula-Agoodvalueis75-linearrelief20-strongcurvatureDipl.Ing.ETHHanspeterDinnerGearConsultancybyEESKISSsoftGmbH,[e-mail]2013-07-21Page13ProfilemodificationsPressureanglemodificationProfileslopemodificationCHαWiththis,thepressureangleofthegearismodified.ItmayalsobeunderstoodasatipreliefthatstartsattherootformdiameterdFfDipl.Ing.ETHHanspeterDinnerGearConsultancybyEESKISSsoftGmbH,[e-mail]2013-07-21Page14ProfilemodificationsProfilecrowning/barrellingDipl.Ing.ETHHanspeterDinnerGearConsultancybyEESKISSsoftGmbH,[e-mail]2013-07-21Page152)SizingfunctionDipl.Ing.ETHHanspeterDinnerGearConsultancybyEESKISSsoftGmbH,[e-mail]2013-07-21Page16SizingfunctionKISSsoftusageInKISSsoft,therearethreesizingfunctionsforgeardesign-The„Roughsizing“-The„Finesizing“-The„Modificationssizing“Theyallworkonasimilarprinciple1)Definebasicrequirementsofthegearset2)Defineaparameterrange3)KISSsoftwillsearchallpossiblesolutionswithintheparameterrange4)Theuserwillfilterthesolutionsaccordingtohisrequirements5)Tofind„thebest“solutionLoaddata,material,…SizingFunctionMultiplesolutionsFilterBestsolutionParameterrangesfor…Dipl.Ing.ETHHanspeterDinnerGearConsultancybyEESKISSsoftGm