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The use of Pro/ENGINEER Advanced Surfaces in
creating 3D geometry.
Who am I ?
Victor Haans
Working for USG Innotiv
Division: Product Development
Function : Design Engineer
Experience: 13 years in Product Development,
approximately 10 years with pro/ENGINEER
Introduction USG Innotiv (1)
• USG Innotiv Product Development
– Division of USG Innotiv (1500 people)
– Part of USG People(20.000 people)
Development Capacity Consulting Training
Product Development
Introduction USG Innotiv (2)
• PD Consultancy & Training (services)– Market leader Benelux for services of PTC products
• Implementation
• Migration
• Process
• Support
– Certified implementer / migrator of PTC database applications
– Certified Trainer Partner of PTC Products
– Certified Service Partner in the Benelux
– Pro/ENGINEER,Pro/INTRALINK, Windchill
Goal of this presentation
Not familiar with Surface Modelling ?:
A brief overview of the added value of surface
modelling compared to solid modelling
Familiar with Surface Modeling ?:
Demonstration, with some new features in
WF4 to5
Overview
• When solid modeling, when surface modeling ?
• Further advantages of surfaces
• Forms of surface modeling: Style feature/ISDX vs.
Advanced Surface modelling
• Level of „Parametrisation‟
• Analysis of surfaces
• Demonstration of (new) features
What is Surface Modelling?
Creating geometry with interconnected
surfaces without thickness.
In pratice: The contour is first defined as a
surface and then made solid
Solids vs. Surface
When surfaces, when solids?
> This question is not easy to answer …
Eventually almost all parts end up as solids, but sometimes the way
to get here is easier in surfaces
Solids vs. Surface: Rules of Thumb
SOLIDS
• Simple single Curved geometry (developable)
•No complicated transitions between surfaces (rounds, curvature*)
•Geometry can clearly be defined in orthoganal views
•Solid geometry, thickness-hight/width ratio is small
•Feature Creation often quicker
•Outside Surface is Rigid
•Selection of all outside geometry takes time
Solids vs. Surface: Rules of Thumb
SURFACES
• Complicated, double curved geometry
•Complicated transitions between surfaces (Tangent, C2)
•Geometry is hard to catch in orthoganal views
•Thin shell like geometry
•Somewhat more time consuming
•More tweaking possibilities
•Merged quilt, selection goes fast
Example
Further AdvantagesSome things can only be done in Surfaces:
•Contour in a skelet model
•Patch/replace or solidify feature
•Round transitions
In general:
•Surfaces are better when the outer contour is important and needs to be
defined first.
•Surfaces regenerate faster (patterns !)
Example
Skelet model split (Publish Geometrie)
Adv surfaces vs Style feature
Style Feature/ ISDX
•On the designers side
•Final form does not exist
•Concept orientated
•Visualisatie
•Free form modelling, drag and drop
•One Super Feature
Advanced surfacing
•On the constructors side
•Final form exists, end result
•Production model, Drawings
•Parametric control over model.
•More features
‘Parametrisation’
Parametric Control over a surface exists when
all characteristics of a shape are defined in
dimensions and these dimensions are coupled
‘Parametrisation’
Parametric control
Freeform surface
(op solid)
Style feature
Boundary surface Fill
SweepBlend
Swept blend
Extrude/revolveVar Sect Sweep
Analysis tools
The most important ones:
•Curvature
•Offset
•Shaded Curvature
•Reflection
>> Demonstration
Curvature
Wikipedia:
Curvature continuity
further requires the end vectors to be of
the same length and rate of length
change. Highlights falling on a curvature-
continuous edge do not display any
change, causing the two surfaces to
appear as one. This can be visually
recognized as “perfectly smooth”.
Demonstration
•The design is a front panel of a high end design
loudspeaker.
•Finish is High Gloss, white
•Fluent surface transitions because of esthetics
and audio (C2 continuous)
•1 woofer, 1 tweeter, 1 bass reflex poort
Demonstration
Demonstration
Thank you for your attention !
• Questions ?