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 ?