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GEOMETRICDIMENSIONINGANDTOLERANCING(GDT)
ACOURSEMODULEINCONCURRENTENGINEERINGFORGATEWAYEECPROJECT...GEOMETRICDIMENSIONINGANDTOL1OVERVIEW1.HistoryandWhatisGeometric DimensioningandTolerancing(GDT)?2.WhyGDT?3.TypesofDimensioning4.SymbolsandAbbreviations5.TypesofTolerancing...OVERVIEW...2*HISTORY
*WHATISGEOMETRICDIMENSIONING&TOLERANCING?
INTRODUCTION...*HISTORY
*WHATISGEOME3INTRODUCTION(Cont.)
WHYGDT?
MAINADVANTAGES...INTRODUCTION(Cont.)
WHYGD4DimensioningandTolerancingshouldclearlydefineengineeringintentandshouldconformtothefollowingrules.
FUNDAMENTALRULES...DimensioningandTolerancings5
MillimeterDimensioning
DecimalInchDimensioning
TYPESOFDIMENSIONING...MillimeterDimensioning
Dec6GeometricCharacteristics&SymbolsSYMBOLS&ABBREVIATIONS...GeometricCharacteristics&Sy7DATUMREFERENCINGDatumReferenceFrame...DATUMREFERENCINGDatumReferen8DATUMFEATURESYMBOLDatumFeatureDatumFeatureSymbol...DATUMFEATURESYMBOLDatumFeat9DATUMFEATURESYMBOL(Cont)FeatureSurfaceandextensionline...DATUMFEATURESYMBOL(Cont)Fea10
WhenthedatumistheaxisorcenterplaneDATUMFEATURESYMBOL(Cont)... Whenthedatumistheaxisor11
WhenthedatumistheaxisDATUMFEATURESYMBOL(Cont)... WhenthedatumistheaxisDAT12Wherenogeometricaltoleranceandfeaturecontrolframeused
DATUMFEATURESYMBOL(Cont)...Wherenogeometricaltolerance13Whenthefeaturecontrolledisthedatumaxis/datumcenterplaneDATUMFEATURESYMBOL(Cont)...Whenthefeaturecontrolledis14MAXIMUMMATERIALCONDITIONMMC...MAXIMUMMATERIALCONDITIONMMC.15LEASTMATERIALCONDITIONLMC...LEASTMATERIALCONDITIONLMC...16Straightness
TOLERANCESOFFORMStraightnessToleranceZoneStraightnessTolerance...Straightness TOLERANCESOFFOR17FlatnessToleranceZoneFlatness
TOLERANCESOFFORMFlatnessTolerance...FlatnessToleranceZoneFlatnes18Circularity
TOLERANCESOFFORMCircularityToleranceZoneCircularityTolerance...Circularity
TOLERANCESOFFO19Cylindricity
TOLERANCESOFFORMCylindricityToleranceZoneCylindricityTolerance...Cylindricity
TOLERANCESOFF20Perpendicularity
TOLERANCESOFORIENTATIONPerpendicularityToleranceZonePerpendicularityTolerance...Perpendicularity
TOLERANCES21Angularity
TOLERANCESOFORIENTATIONAngularityToleranceZoneAngularityTolerance...Angularity
TOLERANCESOFORI22Parallelism
TOLERANCESOFORIENTATIONParallelismToleranceZoneParallelismTolerance...Parallelism
TOLERANCESOFOR23Profile
TOLERANCEOFPROFILEProfileToleranceZoneofLineProfileToleranceofLine...Profile
TOLERANCEOFPROFILE24ProfileToleranceofSurfaceProfile
(Cont)TOLERANCEOFPROFILE(Cont)...ProfileToleranceofSurfacePr25Runout
TOLERANCEOFRUNOUTCircularRunoutToleranceZone...Runout
TOLERANCEOFRUNOUTCi26Runout
(Cont)
TOLERANCEOFRUNOUT(Cont)CircularRunoutTolerance
TotalRunoutTolerance...Runout(Cont)
TOLERANCEOFRUN27Concentricity
TOLERANCEOFLOCATIONConcentricityToleranceZoneConcentricityTolerance...Concentricity
TOLERANCEOFL28PositionToleranceZonePosition
TOLERANCEOFLOCATION
PositionTolerance
...PositionToleranceZonePositio29Symmetry
TOLERANCEOFLOCATIONSymmetryToleranceZoneSymmetryTolerance...Symmetry
TOLERANCEOFLOCATI30GEOMETRICDIMENSIONINGANDTOLERANCING(GDT)
ACOURSEMODULEINCONCURRENTENGINEERINGFORGATEWAYEECPROJECT...GEOMETRICDIMENSIONINGANDTOL31OVERVIEW1.HistoryandWhatisGeometric DimensioningandTolerancing(GDT)?2.WhyGDT?3.TypesofDimensioning4.SymbolsandAbbreviations5.TypesofTolerancing...OVERVIEW...32*HISTORY
*WHATISGEOMETRICDIMENSIONING&TOLERANCING?
INTRODUCTION...*HISTORY
*WHATISGEOME33INTRODUCTION(Cont.)
WHYGDT?
MAINADVANTAGES...INTRODUCTION(Cont.)
WHYGD34DimensioningandTolerancingshouldclearlydefineengineeringintentandshouldconformtothefollowingrules.
FUNDAMENTALRULES...DimensioningandTolerancings35
MillimeterDimensioning
DecimalInchDimensioning
TYPESOFDIMENSIONING...MillimeterDimensioning
Dec36GeometricCharacteristics&SymbolsSYMBOLS&ABBREVIATIONS...GeometricCharacteristics&Sy37DATUMREFERENCINGDatumReferenceFrame...DATUMREFERENCINGDatumReferen38DATUMFEATURESYMBOLDatumFeatureDatumFeatureSymbol...DATUMFEATURESYMBOLDatumFeat39DATUMFEATURESYMBOL(Cont)FeatureSurfaceandextensionline...DATUMFEATURESYMBOL(Cont)Fea40
WhenthedatumistheaxisorcenterplaneDATUMFEATURESYMBOL(Cont)... Whenthedatumistheaxisor41
WhenthedatumistheaxisDATUMFEATURESYMBOL(Cont)... WhenthedatumistheaxisDAT42Wherenogeometricaltoleranceandfeaturecontrolframeused
DATUMFEATURESYMBOL(Cont)...Wherenogeometricaltolerance43Whenthefeaturecontrolledisthedatumaxis/datumcenterplaneDATUMFEATURESYMBOL(Cont)...Whenthefeaturecontrolledis44MAXIMUMMATERIALCONDITIONMMC...MAXIMUMMATERIALCONDITIONMMC.45LEASTMATERIALCONDITIONLMC...LEASTMATERIALCONDITIONLMC...46Straightness
TOLERANCESOFFORMStraightnessToleranceZoneStraightnessTolerance...Straightness TOLERANCESOFFOR47FlatnessToleranceZoneFlatness
TOLERANCESOFFORMFlatnessTolerance...FlatnessToleranceZoneFlatnes48Circularity
TOLERANCESOFFORMCircularityToleranceZoneCircularityTolerance...Circularity
TOLERANCESOFFO49Cylindricity
TOLERANCESOFFORMCylindricityToleranceZoneCylindricityTolerance...Cylindricity
TOLERANCESOFF50Perpendicularity
TOLERANCESOFORIENTATIONPerpendicularityToleranceZonePerpendicularityTolerance...Perpendicularity
TOLERANCES51Angularity
TOLERANCESOFORIENTATIONAngularityToleranceZoneAngularityTolerance...Angularity
TOLERANCESOFORI52Parallelism
TOLERANCESOFORIENTATIONParallelismToleranceZoneParallelismTolerance...Parallelism
TOLERANCESOFOR53Profile
TOLERANCEOFPROFILEProfileToleranceZoneofLineProfileToleranceofLine...Profile
TOLERANCEOFPROFILE54Prof
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