精密平板的熱變形理論與應用研究.pdf

1、安徽大學碩士學位論文精密平板的熱變形理論與應用研究姓名：費雯申請學位級別：碩士專業(yè)：檢測技術與自動化裝置指導教師：李桂華201004ABSTRACTABSTRACTThethermaldefmationcausedbythechangeoftemperatureiswidespreadinevitable.Intheprocessofprecisionmeasurementprecisionmachiningthethermaldefm

2、ationwillleadtochangeofshapesizeofthemachinepartsthuslowerstheaccuracyofmeasurementmachiningeveninfluencesthenmalperfmanceofmechanicalapparatus.WiththedevelopmentofmodernScienceTechnologytheimprovementofmachiningtechnolo

3、gythethermaldefmationhasbeenkeytechnicalbarriersfimprovingtheaccuracyintheseareas.Soitisnotonlyacademicsignificantbutalsopracticallyvaluabletofurtherstudythemechanismofthermaldefmationmeasureitaccuratelysoastotakeeffecti

4、vemeasurestominimizetheimpactoftemperature.UnderthefundingfromEducationDepartmentofAnhuiprovinceNaturalScienceCapitalProgram(ItemNumber：KJ2007B269)thispapercompletesthefollowingmajaspectsonthebasisofdomesticfeignthermald

5、efmationtheyresearchresults.Underthesituationoftemperaturefieldchangestheconfmationofastressfieldinmechanicalpartswillgeneratestrainthustheiginalshapesizewillbechanged.Fprecisionplanepartsthemostdirectmanifestationisthec

6、hangeinflatness.Thispaperfirstqualitativelyanalysesthethermaldefmationsituationofprecisionplanepartstheresultindicatesthattheshapesofprecisionplanepartsarenotsimilarbefeaftertheirthermaldefmation.Thatisprecisionplanepart

7、sperfmanonsimilarityfeaturebefeaftertheirthermaldefmation.AtthesametimethispaperusesthelargescalefiniteelementanalysissoftwareANSYStosimulatethethermaldefmationofprecisionplanepartswhichprovideabasisftheanalysisoftheirth

8、ermaldefmationlawstheimpactontheprocessingaccuracy.Withahighaccuracythermaldefmationexperimentaldevicesemployedtomeasurecontroltemperaturedetectgeometricparametersbymechanicalopticalelectricalequipmentsthethermaldefmatio