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闭式叶轮几何造型与粗加工刀位轨迹规划的研究 Title:ResearchonGeometryDesignofClosedImpellerandRoughMachiningToolPathPlanning Abstract: Inthefieldoffluidmachinery,theclosedimpelleriswidelyusedinvariouscentrifugalpumpsandcompressors.Thedesignofclosedimpellersiscrucialfortheoverallperformanceofthesefluidmachines.Thispaperaimstoinvestigatethegeometrydesignofclosedimpellersandtheroughmachiningtoolpathplanning,focusingonimprovingtheefficiencyandaccuracyoftheirmanufacture. 1.Introduction 1.1Background Centrifugalpumpsandcompressorsplayavitalroleinindustrialapplications,andclosedimpellersareessentialcomponentsinthesefluidmachines.Theperformanceofaclosedimpellerisdirectlyinfluencedbyitsgeometrydesignandtheprecisionofitsmanufacturing.Therefore,itisessentialtostudythegeometricfeaturesofclosedimpellersandtheroughmachiningtoolpathplanningtoensuretheiroptimalperformance. 1.2Motivation Closedimpellersarecomplexthree-dimensionalstructures,andtheirdesignandmanufacturerequirecarefulconsideration.Improvingtheunderstandingoftheirgeometrydesignanddevelopingefficienttoolpathplanningmethodsforroughmachiningarecriticalforenhancingtheoverallperformanceandqualityofclosedimpellers. 2.GeometryDesignofClosedImpellers 2.1BasicPrinciples Thegeometrydesignofclosedimpellersinvolvesvariousconsiderations,suchasvaneangle,bladethickness,bladesolidity,andhub-to-tipratio.Thesedesignparametersdirectlyinfluencetheimpeller'sefficiency,cavitationperformance,andstructuralintegrity. 2.2VaneProfileDesign Thevaneprofiledesignofaclosedimpelleriscrucialforachievinghighefficiencyandlowcavitation.Variousmethods,suchastheEuler-Eulermethodandinversedesignmethod,canbeemployedtodeterminethevaneprofile. 2.3BladeThicknessDistribution Thebladethicknessdistributioniscrucialformaintainingstructuralintegrityandavoidingexcessivestressconcentration.Thedesignshouldconsiderfactorssuchashydraulicloading,manufacturingconstraints,andmaterialproperties. 3.RoughMachiningToolPathPlanning 3.1ToolPathGeneration Theroughmachiningofclosedimpellersrequiresaneffic