机床床身结构优化设计方法-陈叶林

27820108JOURNALOFMACHINEDESIGNVol．27No．8Aug．2010*200093。、。。。4．45%5．8%。TH122A1001－2354201008－0065－04、。。TH5661。2。、。20%。、。。。11．1。。CCDsBoxWilson19513。、。。。、、Kriging4。。。1．21。。*2009－09－072010－02－185087517409ZZ156“”08110511600JWCXSL10021984—。DOI:10.13841/j.cnki.jxsj.2010.08.002。。1%。11．3。、、。5。。maxk1s．t．f－ff≤εXli≤Xi≤Xuii=12…nε———k———f———f———Xi———XuiXli———。1Xii=12…n。1．4、、。、6。。2。222．1。2900mm、1170mm、707mm15mm。V－2800mm81。2、。15mm11。1．64×105N/mm212．8Hz。31．68×105N/mm214Hz。3662782．2x1x2x3x4x5x6x7x84。abc42．311。81、。0．61%0．74%。1。1/mm/mm/mmx1200～400250x2400～600575x3700～1100950x4200～400250x512～1515x6700～1200873x7700～900870x8200～9005002．421．68×105N/mm1.73×105N/mm3．04%214Hz212．8Hz0．56%。2/mm/N/mm/Hzx1250345x2575441x3950927x4250314x51515x68731190x7870779x85002131.68×1051.73×105214212．83。。。。7。maxK2s．t0＜βi≤1M≤MlimitK———βi———iM———Mlmit———。10%5。。。。6。7620108ab563。1．74×105N/mm1×104N/mm5．8%。204．5Hz7．3Hz1496．6kg1424.3kg4．83%。3/N/mm/Hz/kg1.64×105212．81496．61.74×105205．51424．35．8%+3．43%－4．83%++－4、、。。。。5．8%4．83%。1．J．199820111－14．2．J．2005273353－357．3．D．20051－73．4．J．2005225608－612．5．M．2007．6．M．1995．7．J．20072481－5．8．M．1986．9．M．2006．10M．M．1987．11．J．200724187－91．StudyonoptimizingdesignmethodofmachinetoolbedstructureCHENYe-linDINGXiao-hongGUOChun-xingGUOYuan-meiCollegeofMechanicalEngineeringUniversityofShanghaiforScienceandTechnologyShanghai200093ChinaAbstractAdesignstrategyforoptimizingthedesignofma-chinetoolbedstructureissuggestedbycombingsizeoptimizationbasedontheapproximatemodelwiththetopologyoptimizationtech-nology．Firstbytakingtherigidityandfundamentalfrequencyofthemachinetoolbedstructureasthedesigntargetsbyusingthedistancebetweenlateralpartitionsinthemachinetoolbedthick-nessanddistancebetweenlevelingironblocksasthedesignvaria-blesthesamplepointsofthedesignvariablesrequiredbythetestweregeneratedbyusingthecompromisedesignmethod．Andre-sponseofgeneratedsamplingpointswasobtainedbyusingfiniteel-ementanalysisestablishingthesecond-orderresponsesurfaceofapproximationmodelbyusingtheleastsquaremethod．Themulti-objectiveoptimizationmodelwasestablishedbyadoptingthecom-promisedesignmethodandtheoptimalresultwasobtainedbyu-singgeneticalgorithms．Basedonthistopologyoptimizationonthemachinebedstructurewascarriedoutbyusingthedensitymethod．Theresultofatypicalexampleshowsthattheweightofthebedisreducedby4．45%whiletherigidityisincreasedby5．98%afteroptimization．Keywordsmachinetoolbedstructureoptimizationdesignapproximationmodelmulti-objectivesFig6Tab3Ref11“JixieSheji”958186278