不等厚镀锌板的自动化激光焊接生产线的分析

《不等厚镀锌板的自动化激光焊接生产线的分析》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、江苏大学硕士学位论文ABSTRACTAsanewenergy，laserhasbeenwidelyusedinthefieldofweldingbecauseofitshi【ghenergydensity,smallheat-affectedzone，good—lookingweldingseamandeasycontrol，andhasgraduallyreplacedthetraditionalweldingmethodstobeanimportantmethodofprocessinginthetwenty-firstcentury．Intheweldingofautomobileco

2、ver,laserhasgreateradvantagesinweldingdifferentmaterialsanddifferentthicknessoftheplate．Inrecentyears，therapiddevelopmentoflaserweldingtechnologyappliesmoreandmorewidelyintheautomotiveindustry,thetailor-weldedtechnologyofdifferentthicknesssheetsusedforautomobilehasbeendevelopedrapidly,buttheresearc

3、hoftheautomatictailor．weldedproductionlineisstillinitsinfancy．Thispaperhasstudiedtheautomaticproductionlineforthelaserweldingapplicationsofgalvanizedsteel．First，thispaperintroducestheoverallstructureoftheproductionlineandcontrolsystems：analyzesthesystemautomaticloadingandunloadingdevices，introduces

4、selectionprocessofrobotsandlaserandotherhardware，designsawatercontroldevicesandpneumaticcontroldevicesofthesystem，designsrelationshipbetweentherobot，describesthecommunicationbetweentherobotandPLCcontrolsystemmakesthepreparationoftherobothandlingproceduresandtheprogramofcontrolsystem．Secondly,thispa

5、perdesignsapneumaticcontrol—basedautomatedweldingfixturefortheshapeofgalvanizedsteel，determinestheoverallprogramofthefixturebasedonanalysisofthetheoryofthepositioningunitandtheclampingunit；takingintoaccountarrangementofthegaspathandwaterways，designsaspecificstructureofthejig，anddescribesthespecific

6、structureofthefixture，onthisbasis，introducesthecontrolandworkprocessoffixture．Finally,thispaperstudiesweldingprocessofgalvanizedsheetafterintroducingtheautomaticlaserweldingproductionline，studiestheeffectofweldingparameterswhichincludesthelaserpowerandshieldinggasandtheweldingspeedanddefocusdistanc

7、eontheweldqualityofthegalvanizedsteelsheet，obtainsagoodweldingprocessthroughalargenumberofexperiments．Whenthelaserpowerof3600W；theweldingspeedof1．8m／min，thefocuspositionis-1mmandthemixingratioofheliumandarg