InterOp:Connect/CATIA V5/Manufacturing Information Representation

From DocR21

Jump to: navigation, search

The Connect interface supports translation of manufacturing information (MI) present under Annotation Set from CATIA V5 CATPart format. Manufacturing information includes PMI data with Display Information and Hole feature.

Set the Representation user option to PMI or Manufacturing or PMI+Manufacturing.

Contents

PMI Data

Manufacturing Information for PMI is called through the use of a representation named PMI. The PMI data includes dimensioning (Driven and Reference types), Geometric Dimensioning and Tolerancing (GD&T), 3D annotation (text and flag note), and Surface Roughness information. To support the translation of PMI data, the following set of DLLs are required in addition to the common DLLs:

  • SPAXCATIAV5PMIExporter.dll
  • SPAXV5TkPMI.dll

Annotations in CATIA V5

InterOp Connect supports Text Note, Flag Note, Surface Roughness, Dimension, Datum Feature, and GD&T type of annotations in a CATIA V5 file. Other types of annotations such as Note Object Attributes (NOA) are not supported.

  • InterOp Connect represents these annotations in ACIS as an attribute on the associated entity.
  • InterOp Connect represents these annotations in Parasolid as a dummy body containing the tag_id of the associated entity and all of its attributes.
  • PMI annotations created at assembly level (in CATProduct) are exported. However, assembly PMI annotations attached onto workplanes or axis systems in CATPart files are not supported. Set the option Representation to Assembly+PMI to export assembly PMI annotations.

The CATIA V5 annotations are based upon the following rules:

  • All angular values of GD&T are converted into degrees and other types of GD&T values are converted into the target document unit.
  • In the Text Annotations, the text properties such as Underline, Color, Font Size, and Font Name are not supported.
  • In the Flag Note Annotations, URL and Hidden text are not supported and their display properties are given the same as Text Annotation.

Annotation Names

The CATIA V5 Reader also supports feature names for all types of annotations. For example, the feature tree in the following illustration contains PMI annotations; the name of the text annotation "A1a1|Annotation Set.1|Text.1" is exported.

Feature Tree of CATProduct

Dimensions Mapping

While translating from CATIA V5, the Basic, Reference, and Tolerance type dimensions from CATIA V5 are mapped to BASIC, REFERENCE, or TOLERANCE types.

For example, the Reference type dimension in CATIA V5 is mapped as REFERENCE type. The subtype represents Linear, Angular, or Radius value type. Subtype dimension is based on the corresponding dimensions created in CATIA V5. The following table lists dimension mapping:

CATIA V5 Dimension Type Dimension Subtype
DrwDimDistance
DrwDimDistanceOffset
DrwDimLength 		DIMSUBTYPE_LENGTH_OR_DISTANCE
DrwDimRadius
DrwDimRadiusTangent
DrwDimRadiusCylinder
DrwDimRadiusEdge
DrwDimFillet 		DIMSUBTYPE_RADIUS
DrwDimDiameter
DrwDimDiameterTangent
DrwDimDiameterCylinder
DrwDimDiameterEdge

DrwDimDiameterCone

DIMSUBTYPE_DIAMETER
DrwDimAngle
DrwDimAngleArc
DrwDimSlope 		DIMSUBTYPE_ANGLE
DrwDimLengthCurvilinear
DrwDimLengthCircular 		DIMSUBTYPE_CURVILINEAR

Coordinate type dimension is mapped as shown in the table below:

CATIA V5 Coordinate Dimension Type Dimension Subtype
0: 2D coordinate dimension DIMSUBTYPE_COORDDIM2D
1: 3D coordinate dimension DIMSUBTYPE_COORDDIM3D

Note: All the CATIA V5 types other than those listed above are mapped into DIMSUBTYPE_UNKNOWN.


Dimension Extremities in CATIA V5

InterOp Connect exports extremity points of linear and ordinate dimensions from CATIA V5.

Hole Feature

Manufacturing Information for Holes is translated by using Manufacturing Representation. To support the translation of Hole feature, the SPAXCATIAV5Manufacturing DLL is required in addition to the common DLLs.

Display Information

The InterOp Manufacturing Information Reader translates PMI display information from source to target formats. The display information includes:

  • Anchor points of annotation
  • Normal to view plane
  • Primary direction of annotation
  • Leader line information (head and tail points)

This display information can be used by the receiving application to present the annotation data in the same 3D coordinates as in the source file.

Non-semantic GeomTol PMI

The CATIA V5 Reader translates non-semantic GD&T PMI with the limitation that the value of the tolerance is written out as a part of note. The data in the note has the following structure: 

<GeomTol Value> | <upper-note> | <lower-note>

The upper and lower notes are optional; even when absent, empty place holders are provided for them in the notes separated by the delimiter "|". For example, if an <upper-note> is absent but a <lower-note> is present, then the GeomTol note becomes: 

<GeomTol Value> || <lower-note>

The value of the tolerance is set to -1.0.

Important: Datum References of Datum Reference Frames associated with non-semantic GD&Ts will not contain any Datums. This is a limitation as that information is not available with CATIA V5 non-semantic GD&Ts.

Figure. Non-semantic GD&T PMI illustrates a sample non-semantic GeomTol PMI created in CATIA V5. While exporting from CATIA V5, the tolerance magnitude is set to -1 and the note field of GeomTol is set to 0.005 Tol|Upper Note|Lower Note.

Non-semantic GD&T PMI

Non-semantic Stacked GeomTol PMI

The CATIA V5 Reader translates non-semantic stacked GD&T PMI. Only the first row of the non-semantic stacked GeomTol will have display and leader information as well as note (upper and lower) information. For the first row, the owners are respective owners of that GeomTol (for example, face). The first row GeomTol is the owner of the second row GeomTol. The second row GeomTol is the Owner of the third row GeomTol and so on.

If the PMI is of the type non-semantic composite stacked GeomTol, then InterOp translates as explained for non-semantic stacked GeomTol PMI translation.

While printing the owner information for these rows, Owner is specified as upper GeomTol and its Note, for example: 

<Owner :GEOM_TOL(Note:<Note of the upper row>)>
Non-semantic Stacked GD&T PMI

In this example, the text file has the following PMI information:

Note: The PMI information shown is only for the first two rows.


Non-semantic Datum PMI

The CATIA V5 Reader translates non-semantic Datum PMI. The translated data is in the same form as the data translated for semantic versions of Datum PMI.


PMI Data Pointing to Hidden BRep Entities

When translating the PMI representation (CATIA V5 to ACIS), the TranslateHiddenEntities option may be overridden for specific bodies if they are referenced by visible PMI annotations. This ensures the completeness of the PMI information provided.

Specifically, if a PMI entity points to a face, an edge, or a vertex of a solid body, the whole solid body will be translated independently of whether it is visible or hidden.

If the TranslateAttributes option is set to true, then hidden solids that are being translated due to this mechanism will be marked as hidden in the target format.

The table below summarizes what to expect depending on your input CATIA V5 data:

Topology Visible Visible Hidden Hidden
PMI Visible Hidden Visible Hidden
TranslateHiddenEntities=false (default) Both translated BRep translated Both translated Nothing translated
TranslateHiddenEntities=true Both translated Both translated Both translated Both translated

This behavior applies to Part translation only and is currently not implemented for Assembly translation. Refer to the following sections for more information about hidden entities and attributes translation:


Capture

InterOp supports translation of captures from CATIA V5 to ACIS. Different parameters associated with capture are as follows.

  • Current State
  • Hidden Text
  • Clipping Plane
  • Camera

These parameters are described in the following sections.

Captures in CATIA V5

Current State in Captures

InterOp supports translation of the current state of captures. In CATIA V5, this can be identified with a red dot on the Capture icon. An example is shown in Figure. Captures in CATIA V5 above.

Initial State capture indicates it is a current capture.

Hidden Text in Capture

In CATIA V5, moving the cursor over a capture displays its hidden text, if present.

In the image to the right, the capture Dimensions contains the hidden text: "This capture contains all Dimensions". The hidden text is translated to ACIS in the following format. 

<HiddenText Value="This capture contains all Dimensions"/>
Hidden Text in Capture

Clipping Plane in Capture

If the Clipping Plane command is activated in CATIA V5, the clipping of the active view is displayed. The section profile is displayed as a thick orange line and the clipped surface is shown in green.

Clipping Plane helps you see when the active view in a capture is clipped. The section profile is displayed as a thick line; it is shown only when the active view of the selected capture is a section cut or a section view. For other views, only the clipping will be seen (not the profile).

In Figure. Clipping Plane in Capture, Section Cut View.2 is the active view. The clipping plane is displayed in orange dotted lines. The red arrow shows the normal of this clipping plane. In XML the translated clipping plane is displayed with Clipping Plane Display Point and Clipping Plane Display Normal in the following format: 

     <Clipping_Plane_Information>
       <Clipping_Plane_Origin X="<double>" Y="<double>" Z="<double>"/>
       <Clipping_Plane_Normal X="<double>" Y="<double>" Z="<double>"/>
     </Clipping_Plane_Information>
Clipping Plane in Capture

Camera Associated with Capture

If Camera is associated with a capture, its properties are translated to ACIS. The camera helps a user to display a 3D model in the required orientation and zoom. The Camera Properties window shows various camera properties such as Name, Type, Origin, Target, View Angle, and Zoom. There are two types of cameras: Parallel and Perspective.

Parallel
For the Parallel Camera, the View Angle field is not editable in the CATIA V5 modeler.
Parallel Camera
Perspective
For the Perspective Camera, the Zoom field is not editable in the CATIA V5 modeler.
Perspective Camera

Note: Irrespective of camera type, both View Angle and Zoom fields are translated to ACIS. You have to select proper a field depending upon your application.

Camera Properties

In the following image, the camera of the name "section" is associated with the capture "SectionView". Camera properties are translated to ACIS as shown in the following XML format. 

<CameraProperties>
       <Name Value=<string>/>
       <Type Value=<string>/>
       <ViewAngle Value=<double>/>
       <Zoom Value=<double>/>
       <Origin X=<double> Y=<double> Z=<double>/>
       <TargetPosition X=<double> Y=<double> Z=<double>/>
       <ViewDirection X=<double> Y=<double> Z=<double>/>
       <ViewDirectionNormal X=<double> Y=<double> Z=<double>/>
</CameraProperties>
Camera Associated with Capture

Hidden Captures

The CATIA V5 modeler automatically hides some of the captures if the displayed capture is changed. A preview is shown to the right.

To translate the hidden captures, the TranslateHiddenEntities option must be set to TRUE; the hidden annotation entities are also translated. The flag Visibility="FALSE" is appended for hidden entities.

Captures in CATIA V5

See Also

Retrieved from "http://doc.spatial.com/index.php/InterOp:Connect/CATIA_V5/Manufacturing_Information_Representation"
Personal tools
Live