硕士论文-五轴数控机床几何误差建模与测量技术

《硕士论文-五轴数控机床几何误差建模与测量技术》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、大连理工大学硕士学位论文五轴数控机床几何误差建模与测量技术姓名：孟翔宇申请学位级别：硕士专业：机械电子工程指导教师：王晓明20081201五轴数控机床几何误差建模与测量技术GeometricErrorModelingandMeasurementofFive—axisNCMachineToolsAbstractTlliSpapertakesthegeometricerroroffive—axisNCmachinetoolsaSthestudyingobject．Basedontheexistingresearchachievementsabouterrormodeling

2、anderrormeasurementathomeandabroad．geometricerrormodeloffive．axisNCmachinetoolsiSestablished．Andthecomponentsandcharacteristicsoferrortermsinthemodelareanalyzed，alsothedesignoferrormeasurememschemeandmethodoferrorparametersidentificationarediscussed．Firstofall，thecurrentresearchsituation

3、oferrormodelingandmeaSurementtechnologyofNCmachinetoolsisanalyzed．meanwhiletheadvantagesanddisadvantagesofvariouserrormodelingandmeasurementarecompared．TheerrorsourcesandtypesofNCmachinetoolsareintroduced，andthecausesandcomponentsofgeometricerrorareemphasized．Then,featuresaredefinedtodes

4、cribe也efeaturerelatioIlShipbetweentwoneighbouringmovingbodies．Andbodycoordinatesandmovingcoordinatesbetweentwoneighbouringbodiesalesetup．ThefeaturematrixesbetweentwoneighbouringbodiesareanalyzedwhenerrorSexist。andthefeaturematrixesareclaSsified．Afterwards，themethodoferrormodelingisintrod

5、uced，andtheprocessoferrormodelingissummedup．ThetypesofNCmachinetools，especiallyfive．axisNCmachinetools，arepresented．And也edefinitionmethodofcoordinateaxisofNCmachinetoolsisdescribed．Thengeometricerrorsoffive．axisNCmachinetoolsareanalyzed．111etopologyframeworkissetup，andthetwoerrorbranches

6、ofmachinetoolsaredescribed．Afterthatgeometricerroroffive．axisNCmachinetoolsismodeled．andtheexpressionoffirstordererrormodelisgiven．Atlasttheerrortermsinthemodelareanalyzed．Moreover，thedatasimulationofsingleerrortermisintroduced。Byobservingthecomponentsandcharacteristicsoferrortermsintlle

7、model．theerrormeasurementschemeiSdesignedtoidentifytheerrorparameters．Errorsareidentifiedwithmathematicalapproachint11ispaper，withwhichthenumberandprocessoferroridentificationarereduced．andthee街ciencyisenhanced．AccordingtOthemeasurementscheme．themathematicalexpressionsofe