3-HSS型并聯(lián)機床靜剛度預估.pdf

1、天津大學碩士學位論文3HSS型并聯(lián)機床靜剛度預估姓名：吳旭剛申請學位級別：碩士專業(yè)：機械制造及其自動化指導教師：曾子平黃田2000.1.1天津大學碩士學位論文AbstractContrasttopuresixdegreesoffreedomparallelmachinetool，thethrea—degreesoffmedomparallelmachinetooIhasseveraIadvantages，suchassimpleforw

2、ardandinwardkinematics，relativelyIargeworkingspace，andsoonSothistypeofmachinetoolhadbeenpaidgreatattentionandwIIbeanimportantCUITentofthedevelopmentofparallelmachinetoolsExceptforhavingtheadvantagesabove，the3一HSSmachinet

3、ooIexcelsothermachinet001withtrussarchitectureinstiffnessbecausethe3HSSarchitecturecontainsthematurecolumnsliderstructureofIiftermillingmachineCombiningwithdevelopingnewNCcuningmachine，thisdissertationdealswithinvestigat

4、ingthewaytobuildthemodeIofestimatingthestiffnessbeforehandwhichistoprovideatheorydirectingforstructureoptimizationdesignofprototypeThefoIlowingworkhasbeenaccomplishedUsingmatrixstructuretheory，thisdissertationbuildsthefr

5、amestiffnessmodeIbyplotnodesdynamicallywhichisthefunctionofthepositionofmovingplatforminworkingspaceConsidenngtheaffectionofdrivingfeedmechanismandframestructurethisdissertationbuildsthemappingbetweenparts’sti仟nessandmac

6、hinetool’sstiffnassandthesti仟nessmodeIofmachinetoolbyaddingthedeformationofalIpartswhichsolvesthecouplingofmechanismandstructureinstaticsofparalleImachinet001ThisdissertationDutsforwardtheappraisingtargetofstatlcstiffnes

7、sInvirtueofresolutionmodelthispaperputoutrelationbetweenstructureparameterandthestaticsti仟nessbywhichitoptimizesthemachinedesignUsingFEAsoftwarethisdissertationbuildstheentityFEAmodeIofthemachinetooIcomposedofddvingfeedm

8、echanismandframestructure。whichprovesthefeasibilityofbeforehandestimatingstiffnessviastiffnessresolutionmodelIntheendthispaperbuildstheFEAmodeIofactuaImachinet001withtheoptimizedstructuredimensionandprovestheresultsofsti