三軸數控機床運動誤差補償技術的研究.pdf

1、哈爾濱工業(yè)大學碩士學位論文三軸數控機床運動誤差補償技術的研究姓名：王小平申請學位級別：碩士專業(yè)：機械制造及自動化指導教師：張曙姚英學20050601墮塵堡三些奎蘭三耋堡圭蘭竺簍蘭。。。一AbstractAlongwiththefastdevelopmentofmanufacturingautomatizationandtheabroadapplicationofexactmanufacture，therequesttowardtheac

2、curacyoftheCNCmachinetoolshasbecomehigherandhigherInthemethodsofenhancingtheprocessaccuracy，errorcompensationISgettingmoreandmorerecognitionbecauseitonlycorrectsthefinalerrorofthemachine，anddoesnotneedtochangetheconfigur

3、ationandmanufacturingofthemachinelargelyItalsocostsloweranditiseasytoregulateThispaperwillanalysethegeometricerrorofthemachine，constitutetheerrormodel，carryoutthecompensatoryarithmetic，checktheerrorsofthemachineanddothee

4、xperimenttovalidatethefeasibilityandeffectofthemethodBasedonthemultibodykinematicstheories，thepartsoftheCNCareabstractedtosomebodiesThenumberarraysof10w—orderbodyareusedtodescribethetopologicalstructureswhicharetakentoge

5、neralizeandrefineMBS，andthecharacteristicmatricesareemployedtorepresenttherelativepositionsandgesturesbetweenanytwobodiesinMBSUsedthecharacteristicmatrices，eachofthegeometricerrorsisimagedtoonebody，thentheerrormodelwillg

6、ainedAfterthat，athree—axismachinetoolistakenforexample，theerrormodelisgivenErrorcompensationcomestruebycorrectingthenumericalcontrolinstructionsBasedontheerrormodel，thepaperhasgiventhearithmeticofcorrectingthenumericalco

7、ntr01instructionsTherepresentativemovementssuchasorder—point，lineandarcarelabored，andthecorrectedmethodsaregivenThesubsectionofthelineandarcaswellastheCOOrdinateobtainingareespeciallygivenThenaprogramforerrorcompensation

8、aredesignedbasedonthreeaxisCNCmachineTheerrorofthemachineshouldbeknownbeforethecompensation，SOthemachineneedtobecheckedfirstThispapermostlydothecompensationbased0nthegeometricerrorofthreeaxismachine，SOthe21geometricerror