精密平板的熱變形理論與應(yīng)用研究.pdf

1、安徽大學(xué)碩士學(xué)位論文精密平板的熱變形理論與應(yīng)用研究姓名：費(fèi)雯申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：檢測(cè)技術(shù)與自動(dòng)化裝置指導(dǎo)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