基于機床附件化的旋轉(zhuǎn)超聲波加工關(guān)鍵技術(shù)研究.pdf

1、天津大學博士學位論文基于機床附件化的旋轉(zhuǎn)超聲波加工關(guān)鍵技術(shù)研究姓名：劉禮平申請學位級別：博士專業(yè)：機械制造及其自動化指導教師：房豐洲；林彬201205ABSTRACTEngineeringceramicsarewidelyusedinvariousareassuchasaerospace，defense，electronics，automotive，bioengineeringandotherfields，Howevertheceram

2、icmaterialsisdifficulttoprocessbecauseoftheirhighhardness，brittlenessandothercharacteristicsAsaprecisionandefficientprocessingofengineeringceramics，rotaryultrasonicmachininghasattractedalotofattentionfromintemationalrese

3、archerItisakeytechnicalissuethattheapplicationofrotaryultrasonicmachingispopularisedbymakingtherotaryultrasonicmachiningheadandloadmatchingsystemaccessories。Theenergytransferefficiencyandtransfercapacityaresmallinconvent

4、ionalbrushlessrotaryultrasonicdevicesTherearesoftwaremodeandhardwaremodeinexistingaccessoryloadmatchingsystemThenormaloperationandmaintenancearecomplexandthecostishighinsoftwaremodeRespondingtothechangerotaryultrasonicpr

5、ocessingloadisnotsensitiveenoughandthereareothereshortcomingsinhardwaremodeTosolvetheaboveproblem，aaccessoryloadmatchingsystemandaaccessoryrotaryultrasonicdeviceareresearchedanddesignedAnewbrushlessenergytransferringdevi

6、cebasedontheprincipleofelectromagneticinductionisdevelopedOn—linemonitoringtoolwearisstudiedduringrotaryultrasonicmachiningThestudiesinthispaperincludethefollowingaspects：1)Aloadmatchingsystemofaccessoringmachinetoolisde

7、veloped，whoseCOrecomponentisanairbearingworkbenchTheairbearingworkbenchadopsanaerostaticguideBasedongaslubricationtheory，thebearingcapacityandaiffnessoftheaerostaticguideareanalyzedandmeasuredbyfiniteelementmethodandexpe

8、rimentalmethodThemonitoringforcesystemandcontrollingforcesystemoftheloadmatchingsystemarealsodesigned2)Basedontheprincipleofelectromagneticinduction，anon。contactpowertransmissioncollectorusedinrotaryultrasonicmachiningis

9、developedTheworkingperformancesoffourcollectorsareanalyzedbyfiniteelementmethodandareverifiedbyexperimentsThecircuitcompensationmethodoftheprimaryandsecondarycircuitsisdiscussedWhenthesecondarycircuitistransducerthecircu