Gear_Optimizing_with_Advanced_Calculation_Method.pdf

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1、GearOptimizingwithAdvancedCalculationMethodDevelopmentoftheGearTechnologyAllovertheworld,moreandmoregearsaremanufacturedbyinjectionmouldingwithplastic,sinteringusingmetallicpowdersorthroughshapedgrindingofthesteelorbythegashingmethod.Therefore,severalrestrictionscanbeomitted

2、whichoccurwhenthegearsareproducedbythehobmethodorconventionalgeargrindingmethods.Newpossibilitiesopenupfortheoptimisationofthegearwithregardtooperatingnoise,meshingandstrengthcharacteristics.Withthesupportofsuitablesoftware,thecalculationandoptimisationofsuchgearscanbedonewi

3、thoutanyproblems.Thatopensnewhorizonstoimprovegears.Thefollowingtendencieswillbemorepronouncedinthefuture:•Metalswillbeincreasinglysubstitutedbyplastics•Significantreductionsingearnoiseandvibration•Increaseoftheperformancedensity(smallermodelsforsameperformance)•Useofspecial

4、toothforms(non-involutetoothing)Proceduresandcalculationprogrammesforsuchoptimisationofgearsarethesubjectofthisarticle.OptimisingofToothFormforBestPerformanceDependingontheplanneduse,therequirementsonthegeardesigncanbeverydifferent:Lownoisegenerationorvibrationinducement,low

5、manufacturingcosts,higheststrengthandoptimumservicelifeareafewoftheimportantcriteria.Inordertoobtaintheseproperties,severalpossibilitiesfortheoptimisationofthegearsareavailable.Thesearedescribedinthefollowingsections.Thesemethodsarenotnew;butbasedontheimprovedpossibilitiesin

6、currentmanufacturing,severalofthemcanbeemployedmorefrequentlywithout(oronlywithamodest)increaseintheproductioncosts.DifferentOptimisingProceduresfortheToothFormDependingonthemanufacturingprocedureoneormoreoptimisingmethodscanbeappliedfortheimprovementofthegearcharacteristics

7、.Thedifferentmethodsare:GearOptimizingwithAdvancedCalculationMethodStep1:GeometryChangebygivenReferenceProfile:Thegeometrychangethroughthevariationofthemodule,pressureangle,helixangleandaddendummodificationwithagivenreferenceprofilehasastronginfluenceonthepropertiesofthetoot

8、hing.Anoptimumsolutioncanalreadybefoundinthiswayformostcases,especiallyfora