Functionnal Dimensioning and Tolerancing - FDT - Mapping

Table of Contents

• FDT Semantic
  • Value
  • Dimensions
  • Geometrical tolerances
  • Annotations
  • Surface Texture
  • Geometrical Links
• FDT Graphical display
  • Views

In QIF, FDT are named Characteristics. Semantic and graphic display of FDT are described separately, but are converted as a unique Dtk_Fdt.

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FDT Semantic

Value

QIF Entities	DATAKIT Class	Remarks
CharacteristicNominal TargetValue	Dtk_Text
CharacteristicDefinition Tolerance	Dtk_Text

Dimensions

QIF Entities	DATAKIT Class	Remarks
AngularCharacteristicNominal	Dtk_Dimension	Angular includes AngleBetween, Angle, AngleFrom;
CoordinateCharacteristicNominal	Dtk_Dimension	Coordinate includes AngularCoordinate, LinearCoordinate;
DiameterCharacteristicNominal	Dtk_Dimension
LinearCharacteristicNominal	Dtk_Dimension	Linear includes Chord, ConicalTaper, CurveLength, Depth, DistanceBetween, Distance, FlatTaper, Height, Length, Radius, SphericalDiameter, SphericalRadius, Square, Thickness, Width

Geometrical tolerances

QIF Entities	DATAKIT Class	Remarks
FormCharacteristicNominal	Dtk_GeometricalTolerance	Form includes Circularity, Conicity, Cylindricity, Ellipticity, Flatness, Sphericity, Straightness, Toroidicity
LocationCharacteristicNominal	Dtk_GeometricalTolerance	Location includes Coaxiality, Concentricity, Position, Symmetry
OrientationCharacteristicNominal	Dtk_GeometricalTolerance	Orientation includes Angularity, Parallelism, Perpendicularity
ProfileCharacteristicNominal	Dtk_GeometricalTolerance	Profile includes LineProfile, PointProfile, SurfaceProfile
DatumReferenceFrame in CharacteristicDefinition	Dtk_ToleranceSpecificationContainer in Dtk_GeometricalTolerance

Annotations

QIF Entities	DATAKIT Class	Remarks
DatumDefinition	Dtk_Symbol with SymbolType = "TypeDatum"
Note	Dtk_Symbol with SymbolType = "TypeNote"	Work in Progress

Surface Texture

QIF Entities	DATAKIT Class	Remarks
SurfaceTexture	Dtk_Roughness	Work in Progress

Geometrical Links

QIF Entities	DATAKIT Class	Remarks
Link to a FeatureNominal	Dtk_NodeConnector at Dtk_Node level	ReasonLink = "AssociatedGeometry"

FDT Graphical display

QIF Entities	DATAKIT Class	Remarks
Leader	Dtk_Leader	only for Dtk_Dimension and Dtk_GeometricalTolerance. Leader includes LeaderExtend, LeaderCircular, LeaderDoubleHead, LeaderDoubleHeadCircular, LeaderDoubleExtend
WitnessLine	Dtk_Leader	as an ExtensionLine of the Dtk_Leader

Views

QIF Entities	DATAKIT Class	Remarks
SavedView	Dtk_ModelDisplay
Camera	Dtk_Camera