薄壁零件加工变形分析及控制方案

123%,,,,5,,,,:[1].:[].:,1997.[2].:[].:,1997.[3],,.DFA.,1998,38(11):6972[4]..,1999,35(5):6771[5]BoothroydG,DewhrustP.DesignofManufactureandAs2sembly:TheBoothroyd-DewhurstExperienceDesignforXHUANGG.Q.Chapman&Hall1996:1940[6]PaulG.LeneyCaseExperiencewithHitachi,LucasandBoothroyd-DewhurstDFAMethodsDesignforXHUANGG.Q.Chapman&Hall1996:4171[7]ZHAXF.IntegratedKnowledge-BasedAssemblySe2quencePlanning.AdvancedManufacturingTechnology,1998,14:5064():,,1972(430074)5,,1966CAD,,1935CAD,,1946CAD,:1004-132(2002)02-0114-04:,,,ANSYS,,,,,:;;;:TG506;TG659:A,,,,,,,:20000407:(00H52068),,[1],,,,41113220021,,:,11,[2]2AB,ABDC,2,,ACAC,,ABDC,CDC,,,,,,,22.1,,,,3[3,4],,,3,[5],:DFT=KTDztc(1)DFR=KRDFT(2),DFT;DFR;Dz;tc;KTKR,KT€tC,,KTKR,KTKRfz,ap,ae:KT=b0+b2fz+b3ap+b4ae+b22fzfz+b33apap+b44aeae+b12vfz+b23fzap+b24fzae+b34apae(3)KR=c0+c2fz+c3ap+c4ae+c22fzfz+c33apap+c44aeae+c12vfz+c23fzap+c24fzae+c34apae(4)Mikronucp710,,LY12CZ,2.2,(4)7075-T6,fz=77GPa,=2178103kg/m3,=01332.3(1),,,5114(2)(3)2.45,,,,,A,,[6,7]5,,5,,:x014mm,24mm,6000r/m,0104mm115mm2mm310mm,(x=25,x=50)3mm3ANSYS5.7,4,Elastic8node93,,,,,66,x=50,z1/2(3)7z1/2,,x=50(37x)8,8x=50z(),,,,,z9(x=50)(x=25)4611132200219z(),,,,,;,;,,,,,,,,,,105(1),3;(2),,,;(3),,(4),,,,;,,,,,,:[1]AltintasY.DynamicPeripheralMillingofFlexibleStruc2tures.TransASMEJEngInd,1992,114(2):137145[2]TsaiJer-Shyong,Chung2LiLiao.Finite-elementModel2ingofStaticSurfaceErrorsinthePeripheralMillingofThin-walledWorkpieces.J.ofMater.Proc.Tech.,1999,94:235246[3]..:,1987:6776[4]LIZheng,YUNShun,StevenYLiang.Three2dimensionalCuttingForceAnalysisinEndMilling.InternationalJour2nalofMechanicalSciences,1996,38(3):259269[5]KlineWA,DevorRE.LindbergR.ThePredictionofCuttingForcesinEndMillingwithApplicationtoCorner2ingCuts.InternationalJournalofMachineToolDesignandResearch,1982,22(1):722[6]BudakE,AltintasY.ModelingandAvoidanceofStaticformErrorsinPeripheralMillingofPlates.Int.J.Mach.ToolsManuf.1995,35(3):459476[7]SutherlandJW,DevorRE.AnImprovedMethodforCut2tingForceandSurfaceErrorPredictioninFlexibleEndMillingSystems.Trans.ASME,J.Eng.Ind,1986,108:269279():,,1975(210016),,1959,,1972,,1947,,1960()(610092),,1967(),,1969()711excessively,thereductorabradedandbinded,andthetyrewornoutbadly.Thus,theoperationhastobesuspended.Bymeansofmechanicalpropertyandfiniteelementanalysisandcalculationofthetyre,theauthorsholdthatthetraditionaldesignofthedrumcouldbeimprovedbymakingthebodyofthedrumcounter-ro2tateagainsttherotationofthedrivingdevice.Inthisway,thesupportingdevicecanbeequallyinstalledatthenon-drivingsidesoastoreducethecounterbearingpressuresofbothofac2tivelyandpassivelydrivingsideofthetyre,thatis,toreducetheelasticdistortionandtopreventthereductorandthetyrefrombe2ingabraded,therefore,toincreasetheworkefficiencyandtheoutput.Keywords:rubbertyremixingdrummechanicalpropertyresearchAnAssembliabilityEvaluationMethodforProductandPro2cessRedesignGUANQiang(HuazhongUniversityofScienceandTechnology,Wuhan,China)LIUJihongZHONGYifangZHOUJip1112114Abstract:ThispaperfocusesonakeytechnologyforDFAunderconcurrentengineeringenvironment.Ingeneral,therearetwokindsoftypicalDFAideasinCEfields,onekindisforas2semblyprocessplan,andtheotherisassembliabilityevaluationforassemblysequenceandrouting.Thepaperpresentsaninte2gratedassembliabilityevaluationmethodbasedonproductstruc2tureandassemblyprocess,andbuildsquantitativedesigneffi2ciencymodelforassembly,assemblycomplexitymodel,andas2semblycostsmodel.Accordingtoassembliabilityevaluationre2sult,ononehand,productstructurecanberedesigned,ontheotherhand,abestassemblysequenceandroutingcanbeselectedwiselyfromalargesetoffeasibleassemblysequencesbymakinguseofabove-mentionedmathematicsmodels.Finally,aninte2gratedassembliabilityevaluationprototypesystemandcaseappli2cationaregiven.Keywords:assembliabilityevaluationdesignforas2semblyassemblycostconcurrentengineeringAnalysisandControlApproachforMachiningDeflectionofThin-WalledWorkpieceWANGZhigang(NanjingUni2versityofAeronautics&Astronautics,Nanjing,China)HENingWUKaiJIANGChengyuZHANGPingGONGHuiminCHENXuemeip1142117Abstract:ThispaperpresentsanNCcompensationapproachtocontrolthemachiningqualityofathin-walledworkpiece.Inthemethod,firstly,themodelofmillingforcewasestablishedbasedontheoreticalanalysisandexperiment.Then,finiteelementmethod(FEM)wasappliedtoanalyzethemachiningdeflectionquantityofthethin-wallstructure.Finally,thetoolcanbetiltedtocutexcessivematerialthatisleftduetomachiningdeflectionaccordingtotheFEMresultsbyNCcompensation.Therefore,thethin-walledworkpiecescanbemachinedwithhighprecisionandhighefficiency.Keywords:finiteelementmethodthin-walledcompo2nentmachiningdeflectionNCcompensationResearchonRakeGrindingProcessforComplexShapedCuttersWithTorusShapedGrindingWheelXIONGFeng(HuazhongUniversityofScience&Technology,Wuhan,China)BINHongzanJINJianxinp1182121Abstract:Researchonrakegrindingprocessforcomplexshapedcutterswithexistinggrindingmethodsiscarriedout.Basedontheresearchingresults,anewgrindingmethodbymeansoftorusshapedgrindingwheelisproposed,andthegrind2ingprocesswiththisgrindingmethodisanalyzedthroug