LFI長(zhǎng)玻纖增強(qiáng)聚氨酯復(fù)合材料高速銑削加工工藝研究.pdf

1、分類(lèi)號(hào)_UDC注1密級(jí).學(xué)位論文LFI長(zhǎng)玻纖增強(qiáng)聚氨酯復(fù)合材料高速銑削加工工藝研究~(題名和副題名)李建榮(作者姓名)指導(dǎo)教師姓名丁武學(xué)副教授申請(qǐng)學(xué)位級(jí)別碩士專(zhuān)業(yè)名稱(chēng)機(jī)械制造及其自動(dòng)化論文提交日期2012.05論文答辯日期2012.06學(xué)位授予單位和日期南京理工大學(xué)答辯委員會(huì)主席評(píng)閱人2012年6月日注1:注明《國(guó)際十進(jìn)分類(lèi)法UDC》的分類(lèi)號(hào)。碩士論文LF1長(zhǎng)玻纖增強(qiáng)聚氨酯復(fù)合材枓商速銑削加工工藝研究ABSTRACTLFIl

2、ongglassfiberreinfcedpolyurethanecomposite(AbbreviationLFIpolyurethanecomposite)isanexcellentthermosettingcompositewiththeoutstingacteristicslikehighspecifictenacityhighmodulusgoodwearresistanceStrongcrosionresistancefas

3、tmouldingwhichhasbeenwidelyemployedinaerospaceBuildingmaterialandautomobileindustriesandotherfields.Intheautomobileindustry，onaccountofthelimitationsofthemoldingprocess，LFIlongglassfiberreinfcedpolyurethanemouldedwkpiece

4、(AbbreviationLFIPolyurethanemoldingwkpiece)needssecondaryprocessingtomeetthedemoftheactualassembly.DuetothewseprocessabilityofLFIpolyurethanecomposite.Duringthemillingprocessthebadrigidityofthewkpieceeasilymakesitvibrate

5、duringthemillingprocess.AdditionallythehighmillingtemperaturessignificanttoolwearlowEfficiencyarealsothemainfactstorestrictthedevelopmentapplicationofthiscomposite.Indertosolvetheseexistingproblemstheauthconductsthefollo

6、wingexperimentsbytrimmingLFIlongglassfiberreinfcedpolyurethanecompositewiththedashboard:(1)AnalyzingthefactsaffectingthemillingofLFIlongglassfiberreinfcedpolyurethanecompositewiththedashboarddesigningpropertestprograms:

7、1)Thereinfcedfiberglassinthecompositehashighintensityhardness.Howeverthemillingofthickmaterialsneedsgreatwkwhichexertslargeimpactonthetool2)TheLFIlongglassfiberreinfcedpolyurethanecompositehaslowthermalconductivity.Hence

8、itoftentransfersheatthroughthetool，whichacceleratesthetoolwear3)ThecompoundABSepidermisonthedashboardsurfacehaslowmeltingpointtherefeitmeltseasilysticktothetoolwhichhasadverseeffectonchipremoval.(2)Basedonsinglefactexpe

9、rimentthepaperusestwodifferentmillingcuttertodowncutdrymilltheLFIPolyurethanemoldingwkpiece.Thetestshowsthatthemillingdepththefeedingspeedarethemainfactsaffectingthemillingfcebuttheireffectonmillingtemperatureisrelativel

10、ysmall.Besidesmillingspeedgreatlyinfluencesthemillingtemperaturethetoollifewhileexertsrelativelyunobviousimpactonmillingfce.(3)Accdingtotheresultsofexperimentsthispaperfindsoutthelawofthemillingparametersaffectingthemil