双螺旋转子数字化设计方法与技术分析

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1、]ABSTRACTThetwin．helicalrotorsareascrewcompressors，screwpumpscoupleofthecorecomponentsforandsomeotherfluidtransmissionequipments．Thedesignqualityoftherotorshasamajorimpactontheequipmentperformance．Throughstudiesonthedigitaldesignmethodologyandtechnologyofthetwin—hel

2、icalrotors，thedesignquality,levelandefficiencyofthehelicalrotorscanbegreatlyimproved．Therotorprofiledesignisthecoreoftwin—helicalrotordesign．Inordertoprovidetheoreticalbasisforthetwin．helicalrotorprofiledesign，thepaperdescribethecoordinateconversion，conjugatemashing

3、principle，andthealgorithmfortheconjugatedcurveindetail．Andthemathematicalmodelsofthetoothcurve，meshinglineandcontactlinecanbeobtained．Thedesignmethodandgeneralstepsoffeaturemodelingandassemblemodelingarestudiedon3DCADplatform．SecondarydevelopmentmethodbasedonSolidWo

4、rkssoftwareplatf01TIIiSsummedup，whichsuppliestechnicalsupportforthedigitaldesignofthehelicalrotors．’Accordingtothemathematicalexpressionsofthetypicalrotorprofile，generalequationsoftheconjugatedcurveareestablishedandcanbeappliedtoanyrotorprofile．Furthermore，Onthebasi

5、sofanalyingdataconstructionoftherotorprofile，thedigitaldesignsoftwareschemeandalgorithmprocessoftherotorprofileareanalyzedanddigitaldesignofthetwin—helicalrotorprofileisrealized．Theapproachesof3Dparametricmodelinganddynamicmeshingsimulationforthehelicalrotorsaredeep

6、lyanalyzed．Anautomatic3Dmodelingandmeshingsimulationsoftwareforthetwin—helicalrotorsisdevelopedbase，donSolidWorksAPI，whichcansupplyasupportforthedesignvalidationandperformancepredictionofthetwin．helicalrotors．Accordingtotheequationsoftherotorhelicalsurface，formulaof

7、contactline，blowhole，areabetweentheneartwoteeth．utilizationcoefficientofareaandsomeothergeometrycharactersarededuced．Digitaldesignsoftwareschemeofthegeometrycharacterissetup，andautomaticcalculationandoutputofthegeometrycharacterofthetwin．IIhelicalrotorsisimplemented

8、．Mechanicalandthermodynamicanalysesofthetwin．helicalrotorsarecardedoutbyitsworkmode．OnthebasisofANSYSsecondarydevelopingtechnologyonAPDL，f