Using open CAD formats to bridge the gap between today s and tomorrow s standards CAPVIDIA Tomasz Luniewski

Transcription

1 Using open CAD formats to bridge the gap between today s and tomorrow s standards CAPVIDIA Tomasz Luniewski GPDIS_2012.ppt 1

2 CAPVIDIA Founded in 1994 (Belgium, Russia, USA, China, Japan) Development of engineering software applications CAD data translation and CFD services 80 programmers & engineers (20% PhD) Name reflects company activities Cap capturing Vidia knowledge (Sanskrit) Applications Areas: 3D CAD data translation, validation, quality assessment CFD simulations - FlowVision GPDIS_2012.ppt 2

3 Standards Today Well defined standards for 3D Geometry and Metadata 2D Drawing and rules how to present 3D model in 2D (paper) space Functional Dimensioning, Annotation and Tolerance Standards DIN, ISO JSO ASME Y14.5 Implementation in native CAD systems (GD&T FTA) Native file STEP IGES 3D PDF GPDIS_2012.ppt 3

4 Model Based Definition (MBD) Model Based Enterprise (MBE) Multi-CAD/CAM/CMM environment Standards Geometry Topology PMI (GD&T, FT&A) Attributes GPDIS_2012.ppt 4

5 Standards Today 3D Geometry: Surface, Solid - BREP CAD System Foundations 2D Drawings: DIN, JSO, ASME Y14.5, AIA 3500, MIL-STD CAD Specific Formats Kernels ( Manifold, Non-Manifold) Entity Definitions (Analytical, NURBS, Bezier) Tolerance (Absolute, Relative) MetaData STEP, IGES, Native GPDIS_2012.ppt 5

6 Standards Today CAD A CAD B Foundations Foundations CAD Specific CAD Specific Formats How to bridge this gap? Formats GPDIS_2012.ppt 6

7 Interoperability Today Data visualization 3DXML 3DPDF JT Data exchange (native CAD formats, STEP, IGES) IGES, STEP - 3D Geometry/Metadata non semantic STEP 242-3D Geometry/Metadata semantic presentation XML 28-3D Geometry/Metadata semantic presentation Work in progress GPDIS_2012.ppt 7

8 Challenge Exchanging 3D geometry with metadata keeping semantic relations as they were defined in native CAD system Provide easy data exchange for mainstream and downstream applications, production processes and long term archiving GPDIS_2012.ppt 8

9 Solution CAD A CAD B Foundations Foundations CAD Specific CAD Specific Formats CAP How to bridge XML this gap? Formats GPDIS_2012.ppt 9

10 How we handle different native CAD data PRO/E KERNEL Entity List CAP XML Entity List Capvidia Kernel PARASOLID Entity List CATIA V5 KERNEL Based on Capvidia s Geometry Kernel Design to capture data structures from all CAD systems Maintains Original Data Entity Definition for each Kernel GPDIS_2012.ppt 10

11 CAP XML Structure/Schemas XML Schemas NAS6606D27.CADPart (Native Format) GPDIS_2012.ppt 11

12 CAP XML Data Format XML Structure <Model> <Header> attribute type Default value comment Version int 0 Number of format version = 4 EpsModel double 0. Model tolerance LenghtUnit enumlenghtunit mm Length unit IdMax int 0 Max id used in this model Healed bool 1 If true then repair not reqired </Header> <Scene> Topology objects Geometry objects Points Curves 2d Curves 3d Surfaces Transformation Auxiliary objects Relations Features Metadata Text text annotation FlagNote flag note Roughness roughness Datum - datum DatumTarget datum target GTol geometric tolerance DimAng - angular dimension DimLin linear dimension DimRad radial dimension </Scene> <Brep id= > <Shells> <Shell...>... </Shell> </Shells> <Faces> <Face id= 34 /> </Faces> </Brep> <Face id= 10...> <DirectRefs...> <Nurbs23 id= > <BackRefs Number= 2 >1012 </BackRefs> </Nurbs23> </DirectRefs> </Face> <Face id= 12...> <DirectRefs...> <Nurbs23 id= 100 /> </DirectRefs> </Face> NAS6606D27.CADPart (Native Format) NAS6606D27.XML (Open Format) GPDIS_2012.ppt 12

13 CAP XML Data Format Metadata (Product Manufacturing Information) GD&T and FTA Roughness roughness GTol geometric tolerance Text text annotation FlagNote flag note Datum - datum DatumTarget datum target Dimensions: DimAng - angular dimension DimLin linear dimension DimRad radial dimension GPDIS_2012.ppt 13

14 CAP XML Data Format Roughness Description Roughness - obtype <PmiRoughness id="85" Parent="2" Color=" " obtype="2" aptype="0" nleader="0"> <PmiBase Position="0 0 0" Normal="1 0 0" Dir="0 1 0" Height="3.5"> <Font Type="Arial Unicode MS, 20, Bold"/> </PmiBase> <Field Text="111"/> <Field Text=""/> <Field Text="333"/> <Field Text="444"/> <Field Text="555"/> <Field Text="666"/> <Field Text="M"/> <Field Text=""/> <Field Text=""/> <DirectRefs Number="1"> <Face id="63"/> </DirectRefs> <BackRefs Number="2">86 87 </BackRefs> </PmiRoughness> attribute id Parent Color obtype aptype nleader Note3D description Unique id Parent object Color red green blue separated by spaces Roughness Obtention Type Roughness Applicability Type Number of leader 1-3d annotation, 0 2d annotation (internal 3dv type) GPDIS_2012.ppt 14

15 CAP XML Data Format Table of spec symbols GTol Description Symbol code Symbol string Symbol description 0 <UNDEF> Empty symbol 1 <SEPARATOR> 2 <DIAMETER> d 3 <DIAMETERSPHERICAL> < 4 <POSITION> v 5 <FLATNESS i 6 <PROFILESRF> k 7 <MMC> m 8 <RMC> R 9 <LMC> l 10 <FS> f 11 <TP> t 12 <ST> ` 13 <RFS> s 14 <STRAIGHTNESS> g Attribute Description PMIGTol main tag of geometric tolerance Id Id of Gtol Parent Id of parent Label Text label for model tree Color Color rgb (0-255, 0-255, 0-255) Above Text above the main body of GTol Below Text below the main body of GTol nleader Number of leaders ngtol Number of lines in gtol PmiBase base PMI data Position Position of PMI in 3D scene Normal Normal of PMI Dir Text Direction of PMI Height Height of PMI font in model units Font description of the font Leader Description of leader, zero or several objects Origin Leader origin Type Type of arrow Dir Leader direction D3 Array of points GTolData Description of the string of GTOL see pic 2 Type Type of GTol 0-40 see the table of spec symbols DiamMod Diam Modifier 0-40 see the table of spec symbols Magn Double (0 if not defined) TextMain Text of gtol ZoneMod1 Zone modifier 0-40 see the table of spec symbols ZoneMod2 Zone modifier 0-40 see the table of spec symbols ndref Number of datum reference DRef Datum reference, zero or several objects Text Text of datum reference 15 <CIRCULARITY> c 16 <CYLINDRICITY> b 17 <PROFILE_LINE> j 18 <PARALLEL> h 19 <PERPENDICULAR> o 20 <ANGLE> a 21 <CONCENTRICITY> e 22 <SYMMETRY> n 23 <BIDIRARROW> 24 <UMC> u 25 <EMC> E 26 <PMC> p 27 <RUNOUTCIRC> q 28 <RUNOUTTOTAL> r 29 <DEG> 30 <PLUSMINUS> ± 31 <MICRO> M 32 <CIRCULARRUNOUT> q 33 <DEPTH> % 34 <LOWEROREQIVALENT> <= 35 <GREATEROREQIVALENT> >= 36 <SLOPE> ^ 37 <SQUARE> " 38 <CENTERLINE> symbols C and L together 39 <OHM> Symbol of resistance om GPDIS_2012.ppt 15

16 References/Semantics in CAP XML <DirectRefs Number="1"> <Face id="5569"/> </DirectRefs> <BackRefs Number="2"> </BackRefs> GPDIS_2012.ppt 16

17 CAP XML support of mixed model definition <Model> <Header> Parametric Metadata Triangulation Wire-Frame CMM Points </Header> <Scene> Topology objects Geometry objects Points Curves 2d Curves 3d Surfaces Transformation Auxiliary objects Relations Features Metadata Text text annotation FlagNote flag note Roughness roughness Datum - datum DatumTarget datum target GTol geometric tolerance DimAng - angular dimension DimLin linear dimension DimRad radial dimension Triangulation Wire-Frame CMM </Scene> <Brep id= > <Shells> <Shell...>... </Shell> </Shells> <Faces> <Face id= 34 /> </Faces> </Brep> <Face id= 10...> <DirectRefs...> <Nurbs23 id= > <BackRefs Number= 2 >1012 </BackRefs> </Nurbs23> </DirectRefs> </Face> <Face id= 12...> <DirectRefs...> <Nurbs23 id= 100 /> </DirectRefs> </Face> <Points "> </Points> GPDIS_2012.ppt 17

18 CAP XML support of mixed model definition CATIA V5 3D TransVidia PRO/E Creo CATIA V4 UGS PRO/E SIEMENS NX CAPVIDIA XML GPDIS_2012.ppt 18

19 Capvidia components - integration levels Neutral VRML, STL, XML, etc. 3D CAD Native & PMI CATIA V4, V5 UGX, Pro/E InterOp XML 3D TV Kernel API Neutral STEP, IGES, VDA-FS. Options XML Level 1 Level 2 Level 3 Customer Application Level Integration Strategy Programming Difficulty Level 1 Using standard CAD data formats (STEP, IGES) and controlling the kernel functions no programming through Option XML file (text file), command line Estimated Implementation time days 2 Using Capvidia XML data format to communicate with the Kernel (import/export) programming weeks 3 Using Kernel API to directly access provided functions advanced programming months GPDIS_2012.ppt 19

20 Integration with CMM software GPDIS_2012.ppt 20

21 Summary Benefits CAP XML: Open XML format Human and machine readable Flexible and easy to extended Used for over 10 years in Capvidia applications Covers well all CAD systems structures Compact Bi-directional compatibility with STEP 242 GPDIS_2012.ppt 21