1、華南理工大學碩士學位論文激光測厚在胎面擠出中應用的研究姓名：盧巍申請學位級別：碩士專業(yè)：機械設計及理論指導教師：張海20030501華南理工大學工學碩士學位論義A8STRACTExtrusionisthemainprocessingtechniqueoftreadNowintheextrudingproduction，therearetWOmainproblemsOneistheexcesswasteofproductionrate，b

2、ecauseeverydayabout3to4hoursiswastedinadjustingprocesswhenchangingdieorrubbercompound。Theotheristhateligiblerateshouldbeimproved，becausethepresenteligiblerateis86percentorsoThetwoproblemshasinfluencedtheproductioncostdir

3、ectly，Everyyearthewastemoneyintherejecttireisaboutl，500，000yuan。andwhentherejecttireisrecycled，itwilldepressphysicalandextrudingpropertyofrubbercompoundandinfluencetheprocessingqualityfurtherTheultimatereasonwhichcausedt

4、hetWOproblemsisthepresenttechniquelackedreal—timeandprecisemeasurementoftheCROSSsectionsizeTothislackthispaperwillintroducetechnologyoflasermeasuringthicknessintotireextrudingproductionandstudytheitsapplicationexperiment

5、allyThispaperanalyzedthetwoproblemsincorrelativetheoryofdieswellandshrinkageoftread，andconcludedthemainreasoncausinglargerfluctuationofweightandlengthoftreadafterbeingcutisthatCROSSsectionareaandsizeoftreadinextrusionreg

6、ionfluctuatemorecomprehensivelyThispaperthoughtifthetechnologyofmeasuringthicknessinlasercanbeintegratedwithpresentequipmentandcraft，weightandlengthoftreadcanbecontrolledbysettingcontrollinglimitsoftreadCROSSsectionThisp

7、aperusedtheinstrumentofmeasuringthicknessinlaserdevelopedbyGuangzhouSCUTbesttryAutoCoLtdtostudyitsapplicationintireextrudingproductionexperimentallyThispaperstudieditsapplicationconditionsandanalyzeddistributionofcrossse

8、ctionareaandsizeandweightandlengthoftread。Thispaperputforwardtakingshoulderwidth，crownwidthandcrosssectionareainextrudingregionascontrollingobjectsandcalculatedits’controllinglimitsinstatisticalmethodwithanexampleoftwoty

9、pesoftread，andinadditionanalyzedoverflowalarmThispaperanalyzeditsapplicationeffectsandconcludedaftertechnologyofmeasuringthicknessinlaserbeingappliedintotreadextrudingproduction，theeligibleratecallbeimprovedto95percentan

10、d15to2hourscanbesparedeveryday，andalsotheprocessingqualityandsizeprecisionoftreadcanbeenhancedandthroughcalculation，1600，000yuanproductioncostcanbesparedforeachlineKeywords：measuringthicknessinlaser；treadextruding；experi