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TheDesignofthehydraulicmanifoldoffeederBasedonPro/ESummary:ThispaperintroducestheapplicationofPro/Esoftwaretodesignhydraulicmanifold.Accordingtotheworkrequirementsofthehydraulicsystem,designtheschematicofthehydraulicsystem,selectthehydrauliccomponents,thendesignhydraulicmanifoldofthePro/Esoftware.Usingthree-dimensionalparametricsoftwareisgoodforUpgradedesigntools,ensurestheaccuracyofthedesignandimprovethesuccessrateofaone-timedesign.Becausetheinternalofthemanifoldhasmanychannelsandtheholedepthisdifferent.Someshouldbethesame,butsomeshouldnotbethesame,anditiscomplex.Therefore,weproposethatwecanusethepro/Esoftwaretodesignthehexahedralmanifold.Themethodisalsogoodforexaminetherelationshipbetweentheoilpassage.Keyword:Three-dimensionalsolidmodeling;Pro/ENGINEER;parametricdesign;HydraulicSystem;HydraulicManifold.ChapteroneIntroductionThehydraulicsystemusestheintegrateddeviceofhydraulicvalve.Withagoodstructure,smallpressureloss,easymaintenanceanddisassembly,smallvibration,whichwillhelptoachieveintegrationandstandardizationofthehydraulicsystem.Ascarrierholdsofalltypesofcartridgevalvesandotheraccessories,theHydraulicManifoldBlocksconsistsbyitsSystemofthenon-standardandbodyHolds.Itsinternalporesisverydense,andtheholesnetworkiscomplex.Thecurrentdesignlevelisrelativelybackward.Itnotonlymentalheavy,time-consuming,butalsocannotguaranteethequality.Atpresent,sometechniquesusedinhydraulicmanifolddesignFacilitatethedesignplantoacertainextent.Inthispaper,wecombinethePro/ENGINEERsoftwareandthemanifoldknowledge.WetrytousePro/ENGINEERsoftwaretovirtualdesignofHMBtoreducethelaborintensityofdesignersandimproveefficiency.Virtualdesign(VirtualDesign,VD)[3]isbasedoncomputer-aideddesignanditisanewdesignmethodusingvirtualrealitytechnologyevolved.Itcanprovideagooddesignenvironmentandsupporttoolsforproductdesign,thedesigner'sideacanbedirectlyreflectedinthethree-dimensionalinterface.Withtherapiddevelopmentofscienceandtechnology,Hydraulicunitsinvariousfieldsofindustry,agricultureandlifeisusedmorewidely.Itsresearchanddesigninresearch,teaching,particularlyintheproductionpracticewillhaveaverybroadapplicationprospects.ChapteroneLiteraturereview2.1HydraulicManifoldOverviewTherearetwomainproblemtobesolvedaboutmanifolddesign:first,checkwiththedesignofthebodyparts,thesecondistoverifytheassemblystructure.Two-dimensionalengineeringdrawingstoreflectthedesignmethod,notonlythedesignefficiencyislow,andpronetoerror.Someerrorsaredifficulttobefoundinthedrawings,ifyoufindproblemsafterexperimentalproductproduced,willbringnosmalleconomicloss,delaysinproductdevelopmenttime.Therefore,theuseofthree-dimensionalparametricdesignsoftwareproductsweredesignedtoimprovethemeansandmethods,theproblemoccursatthedesignstageaspossible;atthesametimemoremodels,seriesofhydraulicmachinerydevelopment,parametricdesignallowsdesignerstogreatlyimproveefficiency.2.2Introductionto3DmechanicaldesignsoftwarePro/ENGINEERsystemcomeoutin1988withdesignparameters,thenledtheindustryforparametricdesignCAD/CAMsystemsexpectations.Pro/ENGINEERisnodoubtagreathelpforthethree-dimensionalgeometricmodelingdesigner.BecausePro/ENGINEERparametersin[5]doesnotrepresentthethree-dimensionalshapeoftheobjectrelativesize,andtherearerealphysicalsignificance.Forexamplewiththedesignofthephysicalmeaningofthevolume,surfacearea,centerofmass,density,thickness,etc.maybeaddedtothedesignconceivedtoexpressdesign.Pro/ENGINEERisacomprehensivethree-dimensionalproductdevelopmentsoftware,Integratedpartdesign,molddevelopment,productassembly,CNCmachining,design,sheetmetaldesign,reverseengineering,mechanismsimulation,automaticmeasurement,stressanalysisanddatabasemanagementfunctionsinoneproduct.2.3Thepurposeandsignificanceofthethree-dimensionalmanifoldparametricdesignWiththedevelopmentofmodernscienceandtechnology,hydraulicsystemsproductsinthefieldsofmechanical,agricultural,aerospaceandeverydaylifeapplicationsmorewidely,andsomeofthemoreadvancedequipment,theapplicationofthehydraulicsystemonthemore.Intheconventionalhydrauliccircuit,hydrauliccomponentsconnectedbytubingtoachievemutual.Themorethenumberofhydrauliccomponents,morepipeconnections,themorecomplexthestructure,thegreaterthelossofsystempressure,thegreaterthespace,themoredifficultrepairs,maintenanceanddisassembly.Themanifoldiscompact,goodexchangeperformance,maintenance,easyaccessibility.Three-dimensionalsolidbodywithPro/ENGINEERsoftwaretobuildarealisticparts,youcaneasilyandvisuallycheckthepositionoftheholeandtheholeontherelationshipbetweenthehydraulicsystemschematicsmeetsalltherequirements,aswellastheholeslocationisreasonable.Becauseitisparametricsolidmodel,modifyitmoreconvenient.Inordertobetterfacilitatetheobservationoftheinternalfeaturesofthesoftwarecantakeadvantageofperspective.3.4DevelopahydraulicsystemdiagramDevelopahydraulicsystemdiagram,themainissueistoconsiderthefollowingaspects:1、Fromtheoperatingmodechartanalysis,thesystemrequiresalargerflowisfastandquickonthenext.2、Thefigureshowstheoperatingmode,thesystemneedstobeadjustedwhentheslow,takingintoaccountthesystempowerefficiency