feature and topology detection - cadenas
TRANSCRIPT
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Feature and Topology Detection Greater possibilities with Capvidia extension
and PARTsolutions
Cadenas Industry Forum February 5th, 2015
Thomas Tillmann Capvidia GmbH
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Company Overview
Application Areas
Capvidia Solution Portfolio
Feature Recognition Technology used by Cadenas PARTsolutions
3D CAD Data Exchange and Repair Technology used by Cadenas PARTsolutions
Q&A
Agenda
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Capvidia• Founded in 1994• Development of software engineering applications• Engineering software, services, software components • 75 + programmers & scientists (20% PhD)• Global company: Europe, North America, Russia, Japan, China• CAD data translation and CFD • Cap = Capturing
vidia = Knowledge (in Sanskrit)
MissionCapturing knowledge into engineering software applications
VisionProvide solutions for 3D CAD data integrity to secure company intellectual property and investments
Company Overview
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3D CAD Data Interoperability
• CAD Data Translation• CAD Data Repair• CAD Data Feature Recognition• CAD Data Validation (CAD + Metadata)• CAD Data Quality Assessment• CAD Visualization & Collaboration• Reverse Engineering
CFD Simulation
• Multi-Physics (Fluid-Structure-Interaction)• External Internal Aerodynamic • Turbo Machinery • Multi-Phase Flows, Free Surface Simulation • Parallel Processing & Optimization
Application Areas
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CAD Interoperability - 3DTransVidia, FormatWorks *
• Precise CAD data translation with automatic repair & healing• MBD and PMI support• Features
CAD Validation & Revision Control – CompareVidia, CompareWorks *
• Multi level and multi criteria CAD data validation • MBD and PMI support
CAD Quality – QualityVidia, PDQWorks *
• PDQ Standards (AIAG D15,VDA 4955, JAMA, MIL STD 31000A, etc)• User/Process driven quality criteria • Long term CAD data archiving (ISO 10303 STEP)
MBD – MBDVidia• Native, neutral, PMI CAD formats• Automatic Ballooning• Bill of Characteristics• Reporting
Solution Portfolio
*) Solidworks PlugIn
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Solution Portfolio
QIF – CreoVidia (PTC-Creo PlugIn)
• Produce/Consume QIF format• Automatic metrological feature recognition• Capvidia SDK for integration of QIF into metrology applications
Reverse Engineering – ReverseVidia
• Point Clouds => Triangulated representation (mesh)• Automatic mesh conversion to parametric representation
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Strategic Partnerships & Alliances
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Topology Reconstruction and Feature Recognition
Capvidia Extension for PARTsolutions
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CADENAS Context
PARTsolutions before CAPVIDIA:
• Recognition of only base features
• Not reliable feature recognition
• Support of native formats requires CAD system !
• No automatic CAD repair
• No automatic STL repair
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CADENAS Context
PARTsolutions with CAPVIDIA:
• Advanced and reliable feature recognition
• Access to native CAD data without CAD seat required
• Adding STEP support
• Automatic repair & healing for native CAD and STL models
• Improved CAD quality with STEP export
• Improved performace
• Higher reliability
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CADENAS PARTsolutions
Drivers for CAPVIDIA partnership• Access to feature recognition technology
• Multi-CAD access to native CAD data without CAD license
• Access to CAD repair tools
• Capvidia STEP format support
• Cutting development cost and time by using Capvidia SDK
• Possible extensions: access to PMI (GD&T and FT&A)
Benefits:• PARTsolutions helps companies to utilize maximum savings potential
• Cost reduction
• Reduced duplicate of parts
• All information at a glance
• More freedom for creative ideas = Engineering instead of managing
• Detailed search according to pre-defined shapes in components and assemblies• More reliable and flexible search• Reuse of designs and work procedures
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CADENAS PARTsolutions
Benefits:• PARTsolutions helps companies to utilize maximum savings potential
• Cost reduction
• Reduced duplicate of parts
• All information at a glance
• More freedom for creative ideas = Engineering instead of managing
• Detailed search according to pre-defined shapesin components and assemblies
• More reliable and flexible search• Reuse of designs and work procedures
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Features
PARTsolutions with CAPVIDIA Features
Available extensions to Cadenas PARTsolutions:
• Recognition of cylindrical elements
• Detection of long holes
• Recognition of parallel faces
• Angle detection
• Coaxial feature sequences
• Bore patterns (*)
• Step bore holes (*)
(*) in preparation
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PARTsolutions with CAPVIDIA FeaturesWhy Features Defection is important to CADENAS PARTsolutions?
• Higher flexibility & efficiency with part search
• More information more efficient search results
• Time savings in part management process
• Better predictability: build vs. buy
• Geometric based search is more reliable
• Feature based search criteria defined by the user
• Feature attributes (length, diameter, etc.) can be used
as search criteria
• Class-encompassing search results that correspond to
user requirements
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Geometry
Topology
CADENAS Data Model
Features
now with
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Automatic Features Recognition
Parametric B-REP Solid
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Supported Features
• Arc
• Circle
• Cone
• Cylinder
• Ellipse
• Elongated Cylinder
• Extruded Cross Section
• Line
• Opposite Planes
• Compound Feature (coaxial, coplanar)
• Plane
• Point Defined Curve
• Point
• Sphere
• Surface Of Revolution
• Torus
• Thread
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Examples
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Examples
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Customization of Recognition Process
• Turn On/Off features by type
• Priority list
• Multi-feature mode
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Recognize Only Specified Features
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Change Feature Priority
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Multi-Feature Mode
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Automatic Features Recognition
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3D CAD Data Exchange Precise Repair and Healing Technology
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CAD Data Inconsistencies are related to:
• Kernel differences • Model tolerance • File formats
TRANSLATION
Original Model Resulting Model
CAD Data Inconsistencies
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• Import Errors • Model Deformation
• Visible • Non visible
• Surface Curvature Loss• Surface Tangency Loss (G1/G2)• Entity Definition Change• 1000+ Surfaces that will not knit• Uncontrolled Model Changes• Surface Explosion
Source of CAD Data Inconsistencies
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System CAD Tolerance [mm]
CATIA V4 0.1 – 0.02
CATIA V5 0.001
I-DEAS 0.01
UGS NX 0.0254
SolidWorks 0.0254
Parasolid 0.0254
ACIS 0.001
Source CAD - Solid Target CAD - Geometry deformation
Model deformation
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226 surfaces13 surfaces
Surface fragmentation in data translation
Topology changes
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Automatic Repair
Surface Fitting Functions
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3D TransVidia automatically detects gaps andchooses the best method to close them
Automatic Repair
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Automatic Repair Summary
• Maintains design intent
• Prevents model deformations
• Data format independent
• Corrects Geometry
• Eliminates gaps and overlaps
• Adds missing surfaces
• Correct trimming contours (2D/3D)
• Eliminate intersections and self-intersections
• Surface simplification
• Restoring topology
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Supported CAD Formats
Native CAD Formats • CATIA V4, CATIA V5/V6• ACIS• SolidWorks• NX• SolidEdge• Parasolid• JT• Pro/E, Creo• Inventor
Neutral CAD Formats – Capvidia technology• STEP AP203/AP214/AP242• CapXML• QIF• IGES• VDA-FS• STL, VRML
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Evaluation License:
www.cadenas.dewww.capvidia.com
Q&A