弯曲件回弹主要影响因素研究_王洪芬

253吉林工程技术师范学院学报Vol125No1320093JournalofJilinTeachersInstituteofEngineeringandTechnologyMar12009:2008-02-27:(1980-),,,,弯曲件回弹主要影响因素研究王洪芬1,陶忠祥2(1.,130052;2.,130022)[],,,,[];;[]TH16[]A[]1009-9042(2009)03-0064-03StudyontheMainInfluenceFactorsofSpringBackinBendingPartsWANGHong-fen1,TAOZhong-xiang2(1.CollegeofElectromechanicalEngineering,JilinTeachersInstituteofEngineeringandTechnology,ChangchunJilin130052,China;2.DepartmentofAviationMechanicalEngineering,AviationUniversityofAirForce,ChangchunJilin130022,China)Abstract:Springbackexistswidelyinsheetmetalformingprocesses,andparticularlyinben-dingandshallowdrawingprocess.Ithasbeenthekeyproblemofmoulddesigninthefieldofsheetmetalforming.Throughtheresearchonthephenomenonofspringbackinsheetmetalformingprocesses,thispaperdiscussedthemaininfluencefactorsofspringbackinbendingparts.Keywords:bendingparts;springback;influencefactors,,,,,,,,,,,,,,,,11.1,,,,,,,,(),,,,,,,,第25卷第3期王洪芬等:弯曲件回弹主要影响因素研究1.2,111.2.1Q,Q,1/Qc1/Qc1.2.2AAc,$A=A-AcB()A,$B=B-Bc,,,,2,,2.1,,,Rs/E,,Rs,,,,;E,,2(a),,(E1E2),,,Ec1Ec22(b),,(Rs4Rs3),,,Ec4Ec3,,,,22.2rr=Q/t$Ar,r,,,,$Ar,r,,,,,,,2.3A,,2.4,,$A,,,,,,,2.5,,U()V(),U,#65#吉林工程技术师范学院学报200932.6(),,,()(R/t0.2~0.3)V,,122.7,,,,,,,,,,3,,,:[1].[J].,2003,(3).[2].[M].:,2004.[]#66#