KISSsoft塑料齿轮齿廓修形篇课件.pptx

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1、PlasticGearsProfileoptimisationKISSsoftPlasticgearprofileoptimisationWewilllookatthefollowingprofilemodificationsTipandrootreliefProfilecrowning/barelling(centricandeccentric)PressureanglemodificationWewilllearnaboutafunctionhowtofindthebestpossiblecombinationofprof

2、ilemodificationsNotethatyoushouldapplyatiproundingbeforeyouusethebelowfunctionbecausethetiproundingaffectsthetipformdiameterdFa!1)ProfilemodificationsProfilemodificationsBasicconsiderationsThebasictaskisFindasuitableprofilemodificationThatgivesgoodresultsintermsofe

3、.g.Lowpeak-to-peaktransmissionerrorLowwearrateLowcontactstress…UndertheconditionthatitworksfordifferentloadlevelsAndthenexporttheresultinggeometryfortoolingThekeydifficultyis:ONEmodificationshouldbesuitableforMANYloadlevels.Forexample,amodificationthatgiveslowvibrat

4、ionataparticularloadlevelbuthighvibrationatanotherisNOTsuitable.ProfilemodificationsDefinitionsinKISSsoftThedesignofgearmodifications(forplasticgears,mostlyprofilemodifications)isoneofthekeytasksforhighperformancegears,wherehighperformancemaybedefinedas,amaximizedt

5、orquecapacity,minimizedvibrationlevelorlowestwearrisk.Gearmodifications,orthegearmicrogeometry,areassessedinthetoothcontactanalysisTCAwherethetruegeargeometry,consideringbothgearmacroandmicrogeometryandgearmisalignment.Theprofilemodificationmaybeconsideredasatoothfo

6、rmmodificationandarediscussedhere.Thetoothcontactanalysisisnotdiscussedhere.FortolerancebandsrefertoANSI/AGMA2000-A88,ISOTR10064-1.ForprofilemodificationsinKISSsoft,ISO21771isusedmostly.ProfilemodificationsTipandrootreliefTipandrootreliefCαaCαf:Tipreliefmaybeaddedt

7、ogear1orgear2orbothinamesh.Ifyouwanttoconsiderthemodificationonbothgears,usetwolines.Selectthetypeoftiprelieffromthelist„Typeofmodification“In„Value“,enterthevalueforCαaandCαfinum„Factor1“definesthelengthoftherelief/it‘sstartposition,asamultipleofthemodule,measuredf

8、rompointAandErespectivelyUsingtheflag„Status“,youmayuse/notusethemodificationinaparticularcalculation.ProfilemodificationsDifferenttypeso