基于區(qū)域搜索的圓錐度誤差評定算法研究.pdf

1、河南科技大學(xué)碩士學(xué)位論文基于區(qū)域搜索的圓錐度誤差評定算法研究姓名：韋芳霞申請學(xué)位級別：碩士專業(yè)：機械制造及其自動化指導(dǎo)教師：薛玉君雷賢卿20100401摘要IIISubject:ResearchofConicityErrEvaluatingAlgithmBasedonAreaHuntingSpecialty:MechanicalManufactureAutomationName:WeiFangxiaSupervis:AssociateP

2、rofessXueYujunProfessLeiXianqingABSTRACTConicalpartisoneofpartswhichiswidelyappliedinmachineryindustryaeronauticsastronauticsindustry.Conicityisawholerepresentationffmerrofeachgeometricelementofconicalsurface.Theaccurate

3、assessmentofconicityplaysacrucialroleinanalyzingthecausesoferrjudgingthequaliticationofparts.Inthisdissertationtheresearchstatusonconicityerrisintroducedthetypicalevaluationalgithmsthemathematicalmodelssuchasgeicalgithms

4、implexmethodareexplained.Accdingtothedefinitionofconicityerrtwokindsoftheareasearchingalgithmsfconicityerrevaluationareproposed.Onewascalledasmeshsearchingalgithmanotherasgeometricaloptimizationalgithm.Thesealgithmsareal

5、lsuitablefthesituationofarbitrarilysampling.Usingleastsquaremethodbasicprincipleofthreepointdetermineacircletheingmethodoftheinitialaxisduringconicityerrevaluationisdeterminedwhilesamplingpointsareequalintervalunequalint

6、erval；takingtheinitialaxisasareferencelineassigningthegridpointssimplegeometricalfigurestherulesproceduresofchangingpositionofassumedidealconicalaxisareresearched；takingtheassumedidealconicalaxistheaverageradiusofinitial

7、measuredsectionterminatemeasuredsectionasmainparameterstheassumedidealconewasstructuredcontrastingallvaluesofmaximumminusminimumbetweenmeasuredpointsassumedidealconetheminimumzoneconicityerrofcontainingactualmeasuredcone

8、contourisobtainedthoughcalculationcomparisoncrespondingjudgementcirculation；thejudgingmethodofcontainingtheminimumzoneisdiscussed.Thenumericalsimulationcomparisonexperimentswerecarriedouttoconfirmtheproposedalgithms.Accd