3-HSS型并聯(lián)機(jī)床靜剛度預(yù)估.pdf

1、天津大學(xué)碩士學(xué)位論文3HSS型并聯(lián)機(jī)床靜剛度預(yù)估姓名：吳旭剛申請學(xué)位級別：碩士專業(yè)：機(jī)械制造及其自動(dòng)化指導(dǎo)教師：曾子平黃田2000.1.1天津大學(xué)碩士學(xué)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