Published on February 28, 2014
YOUR CENTRAL SOURCE FOR DATA EXCHANGE 3D PDF Implementor Forum Validation with CADIQ Doug Cheney CAD Validation Specialist firstname.lastname@example.org
NIST MBE PMI Validation and Conformance Testing Program Develop test case definitions, test case models and software algorithms sufficient to measure conformance of CAD systems to American Society of Mechanical Engineers (ASME) standards for Product Manufacturing Information (PMI) ASME Y14.5-1994 (Dimensioning and Tolerancing) ASME Y14.41-2003 (Digital Product Data Definition Practices) Official Project Web Site: http://www.nist.gov/el/msid/infotest/mbe-pmi-validation.cfm 2 3D PDF-IF Validation with CADIQ
NIST MBE PMI Validation Data Process Flow Expert Review CATIA V5 Models CAx-IF (STEP) STEP Models Creo Models Test Cases JT-IF NX Models SolidWorks Models Verification 3 3D PDF-IF Validation with CADIQ JT Models CATIA V5 Models Creo Models NX Models 3D PDF-IF 3D PDF Models Implementor Forum = Vendor partnership to identify & resolve implementation issues SolidWorks Models Validation
3D PDF/PRC Representation Options Solid and Surface Geometry Annotation Graphics Annotation CrossHighlighting Annotation Semantic Properties Precise geometry with topology Wireframe curves and text Faces, edges and wireframe geometry Tech Soft 3D schema Tessellated geometry Wireframe with topology curves only Faces and wireframe geometry Custom schema ** Tessellated geometry without topology ** Wireframe geometry only ** Currently out of scope for CADIQ validation 4 3D PDF-IF Validation with CADIQ
Software Architecture: 3D PDF graphical model validation Job Template PDF Report Statistical Report Viewer Controller PDF CAD CADIQ File B Graphical (“tessellated b-rep”) PDF model is analyzed first (left side) and its tessellation points are projected onto the precise (b-rep) CAD model (right side) by the CAD system. HOOPS Session CADIQ Analyzer 3D PDF-IF Validation with CADIQ CADIQ File A CADIQ Analyzer PRC Interface CAD Interface HOOPS API CAD API HOOPS Toolkit CAD Modeler PRC Data 5 CAD Session PDF File PDF File Generation CAD File
Software Architecture: 3D PDF precise model validation Job Template PDF Report Statistical Report Controller Viewer CAD PDF CADIQ File B Precise (b-rep) CAD model is analyzed first (left side) and surface sampling points are evaluated by its CAD system. These are projected onto the precise (b-rep) PDF model (right side) by the HOOPS toolkit. 6 3D PDF-IF Validation with CADIQ HOOPS Session CAD Session CADIQ Analyzer CADIQ File A CADIQ Analyzer CAD Interface PRC Interface CAD API HOOPS API CAD Modeler HOOPS Toolkit CAD File PDF File Generation PDF File PRC Data
MBD View Validation Separate validation of each saved view in an MBD model 7 3D PDF-IF Validation with CADIQ
PRC Validation Example: Annotation text font and size differences Different font settings used during PDF generation and validation processes PRC Model 8 3D PDF-IF Validation with CADIQ CAD Model
PRC Validation Example: Missing Creo Dimension Tolerances Dimensions in the PRC model (left side) do not have tolerances as in the CAD model (right side) PRC Model 9 3D PDF-IF Validation with CADIQ CAD Model
PRC Validation Example: Extraneous dimension value displayed Extension lines for this feature control frame are modeled in CAD system as a separate dimension The value of this dimension is being added during PDF file generation PRC Model 10 3D PDF-IF Validation with CADIQ CAD Model
PRC Validation Example: Solid face colors do not match native model Many of the PRC solid faces have special color definitions The default PRC solid face color (dark gray) is different than the CAD model default color PRC Model 11 3D PDF-IF Validation with CADIQ CAD Model
PRC Validation Example: Lost PMI Edge Associations Annotation edge associations in the CAD model (right side) are not represented in the PRC model (left side) PRC Model 12 3D PDF-IF Validation with CADIQ CAD Model
PRC Validation Example: Inaccurate Geometry Tessellation Graphics Some of the b-rep tessellation vertices in the PRC model (left side) are not precisely located on the corresponding b-rep surfaces in the CAD model (right side) PRC Model 13 3D PDF-IF Validation with CADIQ CAD Model
Reporting Guidelines Vendors can provide 3D PDF files containing geometry defined in PRC as tessellated BREP or precise BREP. Validation will focus on data that is critical for visual consumption. Vendors are encouraged to use pre-release translation software so the validation feedback is more valuable, i.e. not identifying known issues already resolved in development. Each vendor will receive detailed validation feedback confidentially. If a vendor submits data early in the test round, that vendor may have time to receive feedback, improve their translator and receive another set of validation feedback within the same test round. All reports to the PDF Consortium and NIST will be generalized, i.e. containing no CAD system or translator-specific data. ITI will not share any vendor-specific data with our customers as required by agreements with the PDF Consortium and NIST. 14 3D PDF-IF Validation with CADIQ
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