XT B-Rep; Making it Real
John Juckes
Siemens PL
SEPTEMBER 12 -14 2010 International Conference
Hosted by What is XT?
Based on research from the Cambridge University Computer lab under Ian Braid
The world’s leading high precision, production-proven, 3D boundary- representation solid modeling format.
Open and published
Supported by a level-playing field toolkit
http://www.plm.automation.siemens.com/en_gb/products/open/parasolid/index.shtml
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Hosted by 2010 International Conference XT b-rep Convergence
• Parasolid is the worlds leading Solid Modelling Kernel . XT is the Parasolid data format • ~45% CAD data worldwide is Parasolid format • Over 2 million licenses
• All Siemens PLM Software applications that create or navigate solid models or precise geometry are Parasolid (XT) enabled. • XT provides a complete solids representation for JT files • Full solids topology NX • Analytic and nurbs geometry
• Siemens PLM application convergence on XT as the common precise data format • Common shared tools • Consistent functionality • Faster overall lifecycle process performance
Teamcenter Visualization Page 3
Hosted by 2010 International Conference XT Authoring Systems
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Hosted by 2010 International Conference Getting XT data into JT
XT data extracted from Parasolid-based authoring systems can be imported directly, without modification.
Other formats require translation of the Brep into XT
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Hosted by 2010 International Conference Interoperability: Parasolid XT Pipeline
User Standard XT . Data Investment - Estimated 45% of world’s 3D CAD models in XT format Is authored, edited and consumed by over 2.5 . Community – Over 3 million users of Parasolid-enabled systems million users across the Application Standard product lifecycle . Vendor Adoption – Parasolid is selected by major software vendors in
CAD, CAM, CAE, collaboration & data exchange XT . Applications – Over 350 commercial Parasolid-based systems and in- Is embodied in up to 45% of the world’s 3D house corporate key systems product designs Open Standard . Open - Published format, level playing-field access XT . Interoperable – Full 2-way version compatibility and translation-free Is open, published and exchange between Parasolid-based applications enables translation-free interoperability between Parasolid-based Applications all Parasolid-based Visualisation / CAM CAD CAE Data Exchange In-house applications Page 6
Parasolid XT Pipeline Hosted by 2010 International Conference XT in JT
• Another step in the process of XT Convergence. • Can live alongside JT Brep, but more usually replaces it.. • Can be imported directly. • Can be created by translation from other Brep formats.
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Hosted by 2010 International Conference History of Brep in JT
JT Brep Late 1990s Derived from the I-Deas Brep . Simple, lightweight. Not fully robust to perform modeling activities.
XT 2002 Heavier. Fully robust. Zero-translation of Brep with Parasolid-based systems.
ULP 2006
Adaptive lightweight Brep. As precise as you want. As coarse as you need
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Hosted by 2010 International Conference JT Translators Supporting XT
NX Pro/E JT
V5
Swrks
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Hosted by 2010 International Conference Gaining the Value from JT with XT Brep
• Parasolid is the worlds leading Solid Modelling Kernel . • Siemens PLM application convergence on XT as the common precise data format
Visualisation / CAM CAD CAE Data Exchange In-house
Parasolid XT Pipeline
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Hosted by 2010 International Conference Destinations for XT in JT
CAM
CAD
XT Adds capability in JT throughout the range of CAD 3D applications
CAE
Factory Visualisation
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Hosted by 2010 International Conference JT deployed throughout business processes
Specialist Validation Core Engineering Ubiquitous Viewing
PMI Immersive Technical Styling Assembly Validation Design Review Publishing Adhoc Reviews Design Reviews
Formal Design Review Virtual Functional 2D/3D PLM Workflows Build View & Markup Virtual Factory Ergonomic Simulation Quality Validation
Supplier Viewing Spatial Digital Long Term Validation (RDV) Data Retention CAE Results
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Hosted by 2010 International Conference The Role of XT in JT
Machining Engineering Manufacturing Planning
Multi CAD JT
Archival Supplier integration Re-Use
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Hosted by 2010 International Conference Uses for XT in JT
Manufacturing Planning
Supplier integration Re-Use
Engineering Machining
MultiCAD
Archival
Validation
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Hosted by 2010 International Conference XT and JT Validation
Storing the XT b-rep allows you to validate the quality of the precise geometry delivered in the JT file • JT Inspector uses Parasolid Bodyshop to run a series of checks on the integrity of the model. • Errors can be highlighted using Teamcenter Visualization • The JT file can be imported into NX and further analysed using the full Checkmate “PDQ” capability.
3. OEM performs 1. OEM wants to design check content and acceptance check quality before sending to supplier
2. Supplier must Interactive confirm JT to error OEM standard highlighting
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Hosted by 2010 International Conference XT and Multi-CAD JT
Preserves exact mapping of Part of MultiCAD Entity map from JT Bi-directional Translator for CATIAV5 to NX precise entities for CAD systems that import JT . Full Topology . Analytic Support
Gives the imported geometry high functional value. e.g.: • NX Synchronous Technology direct edit of imported JT • Precise reference geometry used for derived CAD design • Creating offset face or Assembly constraints • CAE and CAM directly from the
JT Page 16
Hosted by 2010 International Conference Downstream Application
XT in JT allows direct use by NX in applications such as machining
V5
Database NX CAM JT
Translate
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Hosted by 2010 International Conference XT b-rep and JT Visualisation – Tessellation Quality
Using Parasolid’s stringent modelling paradigms to read the CAD data validates inconsistencies with the original CAD model during the translation process. Validates the CAD data has to be good quality!
. XT faithfully represents CAD solid topology and geometry . Highlights any issues in original CAD data early in process. . Corrects issues that it can (i.e. within Parasolid tolerance).
A correct solid model result is a more faithful tessellated Visualisation. More accurate sections and analysis from Tessellation.
Page 18 Tessellation highlights poor CATIA geometry Tessellation from good CAD geometry
Hosted by 2010 International Conference Archival
The high fidelity available with XT in JT, together with recent ISO progress makes it a suitable format for long term archiving
V5
Pro/E Translate Verify
SE
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Hosted by 2010 International Conference Supplier Collaboration
Being on the XT Pipeline enables a richer exchange of data with collaborators, especially suppliers
V5 Translator NX
Supplier JT OEM
Translator SW (XT direct)
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Hosted by 2010 International Conference Re-Use
With XT in your JT files, they can be loaded into NX as native
The rich analytic geometry definitions in XT support NX Synchronous Technology to use the Brep as a starting point for new work
from partner V5 from suppliers Translate JT
Pro/E
carry- over Page 21
Hosted by 2010 International Conference Synchronous Technology delivers Simple, direct pull/push tools for editing and creation
YouTube Make using NX simple, productive and fun…
No time stamps (history), no dependencies . Simple and quick geometry creation
Fast Performance . create and edit models without long replay times . Easy geometry manipulation
Reliable editing . No update failures, no long and tedious fixing of failed features
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Hosted by 2010 International Conference Summary
• XT is the most widely adopted precise Solid Modelling format. • There are a number of sources and routes for XT data to get into JT • It greatly adds to the value of your JT across the product lifecycle.
Thank You
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Hosted by 2010 International Conference