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Functional Molded Part

User's Guide

Version 5 Release 16

1Pageunctional Molded Part Version 5 Release 16


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Special Notices

CATIA is a registered trademark of Dassault Systmes.

rotected by one or more U.S. Patents number 5,615,321; 5,774,111; 5,821,941; 5,844,566; 6,233,351,292,190; 6,360,357; 6,396,522; 6,459,441; 6,499,040; 6,545,680; 6,573,896; 6,597,382; 6,654,011,654,027; 6,717,597; 6,745,100; 6,762,778; 6,828,974 other patents pending.

DELMIA is a registered trademark of Dassault Systmes.

NOVIA is a registered trademark of Dassault Systmes.

SMARTEAM is a registered trademark of SmarTeam Corporation Ltd.

Any of the following terms may be used in this publication. These terms are trademarks of:

Java Sun Microsystems Computer CompanyOLE, VBScript for Windows, Visual Basic Microsoft Corporation

IMSpost Intelligent Manufacturing Software, Inc.

All other company names and product names mentioned are the property of their respective owners.

Certain portions of this product contain elements subject to copyright owned by the following entities:Copyright Dassault SystemesCopyright Dassault Systemes of AmericaCopyright D-Cubed Ltd., 1997-2000

Copyright ITI 1997-2000Copyright Cenit 1997-2000Copyright Mental Images Gmbh & Co KG, Berlin/Germany 1986-2000Copyright Distrim2 Lda, 2000Copyright Institut National de Recherche en Informatique et en Automatique (INRIACopyright Compaq Computer CorporationCopyright Boeing CompanyCopyright IONA Technologies PLCCopyright Intelligent Manufacturing Software, Inc., 2000Copyright SmarTeam Corporation LtdCopyright Xerox Engineering SystemsCopyright Bitstream Inc.

Copyright IBM Corp.Copyright Silicon Graphics Inc.Copyright Installshield Software Corp., 1990-2000Copyright Microsoft CorporationCopyright Spatial Corp.Copyright LightWork Design Limited 1995-2000Copyright Mainsoft Corp.Copyright NCCS 1997-2000Copyright Weber-Moewius, D-SiegenCopyright Geometric Software Solutions Company Limited, 2001Copyright Cogito Inc.Copyright Tech Soft AmericaCopyright LMS International 2000, 2001



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ster Imaging Technology copyrighted by Snowbound Software Corporation 1993-2001

M-POST Version 2001/14.0 ICAM Technologies Corporation 1984-2001. All rights reserved

e 2D/2.5D Display analysis function, the MSC.Nastran interface and the ANSYS interface are based on LMernational technologies and have been developed by LMS International

pactXoft, IX Functional Modeling, IX Development, IX, IX Design, IXSPeeD, IX Speed Connector, IX Advndering, IX Interoperability Package, ImpactXoft Solver are trademarks of ImpactXoft. Copyright 200102 ImpactXoft. All rights reserved.

s software contains portions of Lattice Technology, Inc. software. Copyright 1997-2004 Latticechnology, Inc. All Rights Reserved.

Copyright 2005, Dassault Systmes. All rights reserved.



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Functional Molded Part

e r v i e w

Conventions

h a t ' s N e w ?

t t i n g S t a r t e d

Entering the Functional Molded Part Workbench

Defining the Main Shell

Editing the Shell Properties

Removing Volumes from the Part While Creating Walls

Piercing the Main ShapeAdding Strength to the Shelled Body

Applying a Styling Surface Onto the Shelled Body

Finalizing the Part Shape

e r T a s k s

Creating the Initial Part Shape

Creating a Functional Body

Setting Shell Properties

Setting Draft Properties

Creating Shape Features

Shellable FeatureCavity Feature

Added Feature

Protected Feature

Internal Feature

Core Feature

Creating Functional Features

Cutout

Pocket

Boss

Rib

RestGrill

Reinforcement

Push

Pull

Fitting

Creating Holes

Locating Holes

Creating Threaded Holes

Using Feature Modifiers



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Cut

Remove

Intersect

Transform Translation

Transform Rotation

Transform Scaling

Transform Symmetry

Transform Affinity

Transform Axis to Axis

Mirror

Offset

Pattern Rectangular

Circular Pattern

User Pattern

Edge Fillet (as a Feature Modifier)

Variable Radius Fillet

Face - Face Fillet

Tritangent Fillet

ChamferDraft Angle

Variable Angle Draft

Creating Multi-Body Features

Divide

Lip

Flange

Join

Snap Lock

Using Functional Extraction

Extraction Properties

Core Extraction

Cavity Extraction

Volumes Extraction (Protected)

Volumes Extraction (Grill)

Behavior Extraction

Using PowerCopies

Creating PowerCopies

Instantiating PowerCopies

Saving PowerCopies into a Catalog

Using Dress-Up Features

Filleting Intersection EdgesReordering Features

Handling Functional Bodies in a Multi-Document Environment

Copying Bodies including Functional Solids and Detailed Features

Copying Functional Bodies

Recommendations

Wireframe Geometry and Functional Features

Manual Updates

Changing Functional Behaviors

o r k b e n c h De s c r ip t io n



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Functional Molded Part Menu Bar

Shape Features Toolbar

Functional Features Toolbar

Mold Design Properties Toolbar

Feature Modifiers Toolbar

Multi-Body Features Toolbar

Functional Extraction Toolbar

Dress-Up Features Toolbar

f e r e n c e I n f o r m a t i o n

Prism

Sweep

Revolve

Thick Surface

External Shape

o s s a r y

d e x



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Overview

book is intended for the user who needs to become quickly familiar with Functional Molded Part product.

overview provides the following information:

unctional Molded Part in a Nutshell

Before Reading this Guide

Getting the Most out of This Guide

Accessing Sample Documents

Helping pictures in all Functional Features

Conventions Used in this Guide

nctional Molded Part in a Nutshell

A Functional Molded Part offers a new approach to developing 3D digital models, called "functional modeling." The objective of functional menable product designers to focus on the functional goals and design constraints of their product. Capturing this information in the product modeides the information from which geometric form can be derived through the combination of behavioral features and a minimum of geometrictruction. The end result is a significant reduction in the effort required to generate the 3D model by allowing more time for designers to focus onneering issues, exploring alternative design approaches, and optimizing their design.

A Functional Molded Part provides tools to create volumes and features that contain inherent behaviors and which interact. The behaviors capturerent design functions, such as adding material, subtracting material, or protecting space. Because they contain inherent behaviors and they interacalled "functional volumes" and "functional features."

scalable product, Functional Molded Part can be used in cooperation with other current or future companion products such as Assembly Design a

erative Drafting.

fore Reading this Guide

re reading this guide, you should be familiar with basic Version 5 concepts such as document windows, standard and view toolbars. Therefore, wemmend that you read the In fra s t ru ct u re Use r's Gu ide that describes generic capabilities common to all Version 5 products. It also describes the gut of V5 and the interoperability between workbenches.

may also like to read the following complementary product guides:

Part Design User's Guide : explains how to create parts.

ketcher User's Guide : explains how to sketch 2D elements.

Wirefram e and Su rface User's Guide : explains how to create wireframe geometry and surfaces.

etting the Most out of this Guide

Functional Molded Part User's Guide has been designed for users new to the application.

et the most out of this guide, we suggest you start reading and performing the step-by-step tutorial Getting Started that provides an overview of

be done with key functions.

e you have finished, you should move on to the next sections describing and illustrating each functionality. You can also take a look at the section

ribing the Functional Molded Part Workbench at the end of the guide.



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cessing Sample Documents

erform the scenarios, you will be using sample documents contained in the o n lin e / fm 1 u g / s a m p l e s folder.

n samples belong to capabilities common to different products, those samples will be found in the o n lin e / c fy u g / s a m p l e s folder.

more information on accessing sample documents, refer to Accessing Sample Documents in the In fra s t ru ct u re Us e r's Gu ide .

Helping pictures in all Functional Features

e are Helper pictures you can access in all Functional Feature dialogs. The Helper pictures guide you to build a feature easier. You can simply click

button from the dialog. When you want to close the Helper picture, you can click on the button to close the side panel.



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nventions Used in this Guide

arn more about the conventions used in this guide, refer to the Convent ionssection.



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Conventions

rtain conventions are used in CATIA, ENOVIA & DELMIA documentation to help you recognize and underportant concepts and specifications.

raphic Conventions

e three categories of graphic conventions used are as follows:

Graphic conventions structuring the tasks

Graphic conventions indicating the configuration required

Graphic conventions used in the table of contents

raphic Conventions Structuring the Tasks

aphic conventions structuring the tasks are denoted as follows:

Th is ic o n . . . I d e n t ifie s . . .

estimated time to accomplish a task

a target of a task

the prerequisites

the start of the scenario

a tip

a warning

information

basic concepts

methodology

reference information

information regarding settings, customization, etc.

the end of a task

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functionalities that are new or enhanced with this release

allows you to switch back to the full-window viewing mode

raphic Conventions Indicating the Configuration Required

aphic conventions indicating the configuration required are denoted as follows:

Th is ic o n . . . I n d ic a t e s fu n c t io n s t h a t a r e . . .

specific to the P1 configuration



raphic Conventions Used in the Table of Contents

aphic conventions used in the table of contents are denoted as follows:

Th is ic o n . . . Giv e s a c c e s s t o . . .

Site Map

Split View Mode

What's New?

Overview

Getting Started

Basic Tasks

User Tasks or Advanced Tasks

Interoperability

Workbench Description

Customizing

Administration Tasks

Reference



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Methodology

Frequently Asked Questions

Glossary

Index

ext Conventions

e following text conventions are used:

The titles of CATIA, ENOVIA and DELMIA documents appear in t h i s m anner throughout the text.

File -> Ne w identifies the commands to be used.

Enhancements are identified by a blue-colored background on the text.

ow to Use the Mouse

e use of the mouse differs according to the type of action you need to perform.

Us e t h is

m o u s e b u t t o n . . . W h e n e v e r y o u r e a d . . .

q Select (menus, commands, geometry in graphics area, ...)

q Click (icons, dialog box buttons, tabs, selection of a location in the document wind...)

q Double-click

q Shift-click

q Ctrl-click

q Check (check boxes)

q Drag

q Drag and drop (icons onto objects, objects onto objects)

q Drag

q Move



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q Right-click (to select contextual menu)



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What's New?

ew Functionalities

nge

The Flange command allows you to add material around the mating bodies at the mating face.set

The Offset command allows you to create a feature that is an offset of the selected features by aspecified distance.

ap-lock

The Snap-lock command allows you to create a cantilever type of snap-fit attachments between twbodies. It creates both cantilever and retention mechanism.

ansform Affinity

The Transform Affinity command allows you to change the size by a scale ratio in a given direction.ansform Axis to Axis

The Transform Axis to Axis command allows you to move a feature from one reference axis systemanother.

nhanced Functionalities

ntrol Wall creation for Intersect

The wall creation control has been added to the Intersect modifier to be consistent with Cut andRemove.

al thickness value

You can give two different thicknesses from the centerline of open profiles in Rib. It provides you mflexibility when defining the Rib feature.

ternal shape

Added the option to offset and special-offset faces of external shapes for all shape features.et at the end faces for Shape Features, Reinforcement, and Rib

You can add lateral fillets to the end faces of open sketch/profile.per pictures

You can access Helper pictures from all the Functional Feature dialogs.egration with Screw catalog

The Screw catalog is included in Join feature to select a screw to define the screw parameters.ersection Edge Fillet

The Part Design Edge Fillet command now provides four new options which let you fillet the edgesproduced by the intersection of the features you select.

ersection Fillet for remove, intersect, cut

Intersection Fillet provides the capability to create fillets at the intersections with the targets.rinsic fillets for Rib

It provides you the ability to have intrinsic fillets on the edges of the rib feature.n Gusset

It allows you to generate gussets around the head and thread of a join feature.n Outside shape

It allows you to create a join externally.ep Wall Thickness constant for Cut, Remove, and Intersect

It has the ability to keep the wall thickness constant when modifying "wall creating features" that hbeen using the constant wall option.

w Specification Tree

New Specification tree provides you ways to better organize and understand the Functional modifie

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ofile control in Lip

Two new profile control options were added to give users more flexibility to define a Lip feature.ect faces as profile input

The face of the functional features or solid bodies can be selected as Profile/Surface for Functional aShape Features.

etch selection for Parting/Neutral/Dividing element

You can select the sketch, and a GSD surface will be automatically built for the element.read representation in Drawing

When a hole is defined with a thread specification, the corresponding thread representation is creatthe drafting of the part.

Shell option

You can trim the volumes of functional and shape features to the boundary of the Shell at an offsetdistance.

divided volume option in Divide

Undivided volume provides the options to not split the protected volumes and to not split the core odivided body.

ll direction option

It provides you the capability to specify in the shell properties inside or outside thickness direction tconstruct the walls of the Shellable Shape features and the walled features such as Cutout, Pocket,

Rest, Reinforcement, Cut, Remove, and Intersect.

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Getting Started

fore getting into the detailed instructions for using Functional Molded Part, the following tutorial aims atving you a feel as to what you can do with the product. It provides a step-by-step exercise based on aalistic design scenario showing you how to use key functionalities for creating a plastic part.

e main tasks covered in this section are:




Removing Volumes from the Part While Creating Walls

Piercing the Main Shape

Adding Strength to the Shelled Body

Applying a Styling Surface Onto the Shelled Body


All together, the tasks should take about ten minutes to complete. The final part will be a phone cap look like this:

Outside Inside



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This first task shows you how to enter the Functional Molded Part>workbench.

The only pre-requisite for this task is to have a current CATIA V5 session running.

1 . Select the S t a r t - > Me c h a n i c a l D e s i g n - > F u n c t i o n a l Mo l d e d P a r t command or click the F u n c t i o n a l Mo l d e d P a r t

from the Welcome to CATIA V5 dialog box.

If the Part name dialog box appears, select the options you need and validate by clicking OK. This dialog appears if you

customized your session as explained in the Customizing chapter of the Part Design User's Guide . For more information,

to the documentation related to the Part Documenttab.

The F u n c t i o n a l Mo l d e d P a r t workbench is displayed, ready to use. The commands for creating features are available t

right of the window.

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2 . To perform this tutorial, open the Phone.CATPart document. For information on where sample documents are installed b

default, see Accessing Documentsin the Infrastructure User's Guide.

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In the first task, you will create a shellable prism from a profile sketched in the S k e t c h e r workbench

Creating a shellable prism means ensuring that the geometry you are going to create can be shelled

you added material generated by other features.

1 . Click the S h e l l a b l e F e a t u r e icon .

The S h e lla b le Fe a t u r e dialog box that appears displays the P r i s m icon as the default s

to be created.

2 . Keep the default option and select L a t e r a l P r o f i l e as the profile to be extruded.



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The application previews the prism.

3 . Enter 15mm in the Fir s t le n g t h field to define the feature length. The preview of the prism

changes dynamically as you change values.

4 . Click the D i r e c t i o n tab to check that the default option fits your needs: as the N o r m a l t o p r o fil

option is checked, the prism will be created normal to the sketch plane. Keep this option.

5 . Click the D r a f t tab that enables you to optionally draft the prism.

6 . To define the draft angle, set the Dr a f t b e h a v io r option to I n t r in s ic t o f e a t u r e . Options are no

displayed.

7 . Set the A n g l e option to 5deg if not already done.

8 . Click OK to confirm. The shellable prism is created and the application displays this feature in thespecification tree.

In a Nutshell

The Shellable capability creates geometry that will belong to the main shape of the part. Shellable

features can take on the shape of a prism, sweep, revolve, thick surface or even of an external shape.



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To know more about this capability, refer to Cutout.



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In this task you will edit the thickness of the shellable prism you have just created and you will alsoremove one of its faces.

1 . In the previous task, while adding the shellable prism in the specification tree, the application als

created the S h e ll P r o p e r t ie s . 1 entity. Double-click S h e ll P r o p e r t ie s . 1 and look at what it

contains.

The S h e ll P r o p e r t ie s dialog box displays a thickness value that applies to the prism.

2 . Enter 1.5mm in the T h i c k n e s s field to edit the default thickness.

3 . Select the bottom face as the opening face.

Clicking the icon displays the Fa c e s t o r e m o v e dialog box that allows you to:

r View the list of all of the selected faces Remove any face clicking the R e m o v e button

r Replace any face using the R e p l a c e button and selecting a new one in the geometry or the

specification tree.

4 . Click OK to confirm. The part now looks like this:



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In a Nutshell

The S h e ll P r o p e r t ie s dialog box lets you define the thickness of the part as well as its opening faces

thickness value you enter will apply to all of the functional features in the same body that create wal

well as to additional shellable volumes. See Setting Shell Properties for more details.



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Removing Volumes from the Part While CreatinWalls

The Cutout capability removes volumes from the part while creating walls. The area of the cutout isprotected, which means that nothing can penetrate this area that is in the same body. Entities in othbodies can penetrate protected areas.

In this task, you will create two cutouts.

1 . Click the C u t o u t icon .

The C u t o u t dialog box that appears displays the P r i s m icon as the default shape to be

created. Keep this option.



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First Cutout

2 . In the specification tree, select Ca p Cu t o u t as the closed profile to be used. The application

previews the cutout as well as two textual indicators for both limits:

3 . In the F l o o r frame, enter 8mm in the L e n g t h field to define the location for the floor.

4 . In the O p e n i n g frame, Enter -20mm in the L e n g t h field to define the location for the opening.

5 . Check the W i t h f lo o r option, if not already done.

6 . Click the D r a f t tab.

7 . To define the draft angle, set the Dr a f t b e h a v io r option to I n t r in s ic t o f e a t u r e . Options are now

displayed.

8 . Set the A n g l e option to -3deg if not already done.

9 . Click the Fille t tab to add a fillet to the cutout edges.

1 0 . Enter 1mm for the Floor radius value.

1 1 . Click OK to confirm. The first cutout is created and as a protected area, it is displayed in red:



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Second Cutout

1 2 . In the specification tree, select S c r e e n Cu t o u t as the profile to be used.

1 3 . Enter 0mm in the L e n g t h field to define the floor location.

1 4 . Enter -20mm in the L e n g t h field to define the opening location.

1 5 . Uncheck the W i t h f lo o r option.

1 6 . Click the D r a f t tab and enter -3 in the A n g l e field to define the draft angle value.

1 7 . Click the Fille t tab and to define the lateral radius value, enter 5mm in the corresponding field.

1 8 . Click OK to confirm. The second cutout is created:

The specification tree indicates these operations under the names ofC u t o u t . 1 and C u t o u t . 2 .

In a Nutshell

The Cutout capability protects the volume from material volumes in the same body penetrating into it an

generates walls around this volume.



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To know more about this capability, refer to Cutout.



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Piercing the Main Shape

This task shows you how to create holes in the main shape by using the Protected Feature capabilitywill create three protected prisms, that is areas within which no additional material created by otherfeatures within the same body can be added.

1 . Click the P r o t e c t e d F e a t u r e icon .

The P r o t e c te d Fe a t u r e dialog box that appears displays the P r i s m icon as the default

shape to be created. Keep this option.



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2 . Select Ke y h o le s as the profile to be used.

3 . Enter 20mm in the Fir s t le n g t h field.

4 . Click the D i r e c t i o n tab to ensure that the direction of the features will be normal to the profile

plane.

5 . As you do not need to draft the feature nor fillet its edges, simply click OK to create the protecte

prism.

Second Protected Prism

6 . To create the second protected prism, click the P r o t e c t e d F e a t u r e icon again.

7 . Select HP Holes as the profile to be used.

8 . Enter 20mm in the Fir s t le n g t h field.

9 . Click the D i r e c t i o n tab to ensure that the direction of the features will be normal to the profile

plane.

1 0 . As you do not need to draft the feature nor fillets its edges, simply click OK to create the

protected prism.

First Protected Prism



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Third Protected PrismNow you will create a third protected prism that corresponds to the area reserved for the pho

electronic mechanism.

1 1 . Select R e s e r v e d S p a c e as the profile to be used.

1 2 . Enter 4mm in the Fir s t le n g t h field.

1 3 . Enter 2mm in the S e c o n d l e n g t h field.

1 4 . Click the D r a f t tab.

1 5 . To define the draft angle, set the Dr a f t b e h a v io r option to I n t r in s ic t o f e a t u r e . Options are

displayed.

1 6 . Set the A n g l e option to 3deg.

1 7 . Set the first limit as the neutral element

1 8 . Click OK to confirm.

The specification tree indicates these operations under the names ofP r o t e c t e d P r is m . 2 ,

P r o t e c t e d P r is m . 3 and P r o t e c t e d P r is m . 4 .

In a Nutshell

Creating a protected volume:



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q generates no walls.

q material created by other features within the same body will not penetrate the protected volume.

To know more about this capability, refer to Protected Feature.



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Adding Strength to the Shelled Body

This task shows you how to add strength to the shelled body by using the Rib capability.

1 . Click the Rib icon .

The Rib dialog box that appears displays the P r i s m icon as the default shape to be create

Keep this option.



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2 . Select I n t e r n a l Rib s as the profile to be used.

3 . Enter 20mm in the L e n g t h field to define the first limit.

4 . In the W a l l frame, set the En t e r t h ic k n e s s option. Enter 1mm to define the wall thickness.

thickness values can only by positive (nonzero) values.

5 . Click the D i r e c t i o n tab to ensure that the direction of the features will be normal to the profi

plane.

6 . Click the D r a f t tab.

7 . To define the draft angle, set the Dr a f t b e h a v io r option to I n t r in s ic t o f e a t u r e . Options are

displayed.

8 . Set the A n g l e option to -1deg.

9 . Set the P r o f ile p la n e as the neutral element to be used for drafting the rib feature.

1 0 . Click OK to create the rib.

The specification tree indicates this operation under the name ofRib .1 .

In a Nutshell

Ribs are typically applied inside of a shelled body.

To know more about this capability, refer to Rib.



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pplying a Styling Surface Onto the Shelled Bo

In this task, you will alter the part shape by cutting material away from it. To do so, you will use thecapability with a styling surface.

1 . Click the Cu t icon .

The Cu t dialog box is displayed.

2 . Select Shellable Prism.1 as Features to cut.

3 . Select To p S u r f a c e as the cutting element.

4 . Click any arrow to reverse the direction indicating which portion of material is to be kept. The

arrows must point toward the phone bottom face as shown here:



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5 . Click OK to cut the part and hide the cutting surface to enhance the result:

The specification tree indicates this operation under the name ofC u t . 1 .

In a Nutshell

The Cu t capability can be used to modify the shape of a functional feature with a styling surface.

To know more about this capability, refer to Cut.



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To finalize the part shape, you will use one of the different commands available for filleting edges.

1 . Click the E d g e F il le t icon .

The E d g e F ill e t D e f i n i t io n dialog box appears.

2 . Select the edge to be rounded, that is the top edge.

3 . Enter 3mm in the R a d i u s field to define the fillet radius value. The preview of the radius value

changes dynamically as you change values.

4 . Click P r e v i e w to get an idea of what the fillet will look like.

5 . Click OK to confirm. The final part looks like this:



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In a Nutshell

Traditional Part Design dress-up features are available in the Functional Molded Part workbench comm

to let you finalizing the shapes of the parts.



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User Tasks

nctional Molded Part is not history-based the way some traditional CAD systems are. Instead, it is behavven, which means that the system is driven by the behavior of a model's parts, not the order of theirroduction or regeneration. A behavior-driven modeling system means design elements can be introducedexecuted freely at different stages in the design process.

r example, you can introduce a feature in a reserved space in your design even before the body exists toich the feature will eventually be applied. When the body is created, the feature will automatically benerated, and other affected entities will change accordingly. There is no need to backtrack through thesign's history to update the rest of the affected entities.

story independence also reduces and, in most cases, eliminates feature failures and the typical work-aroeded to reorder or reintroduce features at a specific position in the history tree of the design. Becausenctional Molded Part does not impose history-based rules, the system is more flexible, and you can applyodeling operations wherever and whenever they are needed.

s section will explain and illustrate how to create various kinds of features. The table below lists theormation you will find.


Shape Features



Functional Features

Feature Modifiers

Multi-Body Features

Functional Extractions

PowerCopy

Reordering Features

Handling Functional Bodies in a Multi-Document Environment

Changing Functional Behaviors



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Recommendations



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Prior to creating the initial shape of the part, you should be familiar with the following concepts:

q Body

q Shape Features and Functional Features

q Solid Functional Set

q Functional Set

q Pre R16 vs. R16

q Opening an existed part file created in prior to R16

q Shell Properties

q Draft Properties

BodyWhen you create a new Molded Part, an empty PartBody will be created. Each body can be empty orcontains only one Solid Functional Set from R16 onwards. Any Part Design command such as Dress-Ufeatures can be applied to functional solids and inserted under Body.

You can refer to Creating a Functional Body to understand how to insert a new body.

Shape Features and Functional Features

To begin creating your part, you begin by adding shape features to the active body to create the initi

shape of the part. Shape features and Functional features will be inserted in a Solid Functional Set. Sfeatures represent any type of material as well as empty spaces. The different shape features interacunique ways with each other and with the functional features. The key to modeling with functional

volumes is to understand how the different types interact within a body.

Solid Functional Set

From R16 onwards a Solid Functional Set is created in each Body. Solid Functional Set contains shapfeatures and functional features. You can insert multiple and nested Functional Sets. You can movearound Functional Features by using drag and drop.

Functional Set

From R16 onwards a Functional Set is created under the Solid Functional Set or the Functional Set. W

you insert a new Functional Set, you need to specify a Solid Functional Set or a Functional Set that th

new Functional Set belongs to. It can contain Shape Features, Functional Features, Sketches, and GS



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entities. You can create nested Functional Sets under the Functional Set. It is used to organize the

Functional Features and GSD elements inside the Solid Functional Set.

Pre R16 vs. R16

You will notice that the specification tree structure and content have been changed as below when yo

build the same Phone model between Pre R16 and R16. On your left it shows the specification tree

created in prior to R16 which includes Functional Body and Functional Solid. On your right in the

specification tree Functional Body has been removed and replaced with Solid Functional Set under Bo

And Functional Solid has been removed and directly associated to Solid Functional Set from R16 onw

P r io r t o R 1 6 R1 6 a n d o n w a r d



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Opening an existed part file created in prior to R16

When you open the file created in prior to R16, the old style specification tree with Functional Body a

Functional Solid shows. Old Functional Bodies and new Solid Functional Sets can coexist in the

specification tree in the same Part file. There is no utility to convert the old specification tree to the n

style tree.



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Shell Properties

Each body contains a shell property that specifies the thickness of the walls in any shellable feature (of the six shape feature types) in that body. The thickness can also be zero, thus the shellable volumwould not be shelled. The shell property is easily changed at any time during the design process. Formore, refer to Setting Shell Properties.

Draft PropertiesFor more, refer to Setting Draft Properties.



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Creating a Functional Body

When your CATPart document contains no functional bodies, the application creates a functional bodysoon as you have created your first functional or shape feature. Later on, if you need to add otherfunctional bodies to the specification tree, you need to explicitly specify this. In this task, you will leahow to create a new functional body.

Open any CATPart document provided in this guide. The following scenario is performed using theCutout.CATPart document.

1 . Select I n s e r t - > Bo d y .

A body is created. It is displayed in the specification tree and is set as the current body. Func

Body.1 is no longer the current body.

A current body is a body determining the location of the features you are going to create.

Note that because Fu n c t io n a l B o d y . 1 is no longer the current entity, the associated icon wh

was blue, changes to grey to indicate this.

2 . Create any functional or shape feature. For example, create a cutout feature. Before you crea

feature, make sure that you are in Non-Hybrid Mode. To set to Non-Hybrid mode, select Tools

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Options -> Infrastructure -> Part Infrastructure -> Part Document tag. And unselect "Enable

hybrid design". From R16 onwards S o l id F u n c t i o n a l S e t will be inserted under the non-Hybrid

Body. The Cutout feature is displayed under S o l id F u n c t i o n a l S e t in the specification tree under

the new body.

Note for the details ofHybrid Design, refer to the Part Design User's Guide .

For the setting of enable/disable hybrid design, refer to the Cust om izing Part Docum en t .

You can create as many functional bodies as required to produce a part.

Setting a Functional Body as Current

3 . If you wish to set Fu n c t io n a l B o d y . 1 as current, select it.

4 . Right-click to use the Fu n c t io n a l Bo d y . 1 o b j e c t - > De f in e I n W o r k O b j e c t contextual

command. Functional Body.1 is the current functional body again. Its associated icon is blue again

whereas Functional Body.2 's icon is grey.

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Showing or Hiding Functional Bodies

To hide or conversely, show the geometry of a functional body, proceed as follows:

Right-click F u n c t i o n a l Bo d y . 1 and run the Hid e / s h o w resulting geometry command that lets

you manage the resulting geometry view.

o r

Right-click its corresponding functional solid and run the Hid e / s h o w command.

o r

Right-click its corresponding body and run the Hid e / s h o w command.

Note that the Hid e / S h o w command applied to a functional specification hides or shows its

protected volumes. Applied to a functional body, the command hides or shows all the protected

volumes of the functional body.



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One of the key shape feature types is the "shellable" feature. This is a material volume that you can app

wall thickness to, thus defining an internal boundary and creating an internal spatial volume.

The S h e ll P r o p e r t ie s command assigns a wall thickness to an active body, making it hollow, thusmaking the Shellable volumes hollow that are in the body. The command not only specifies the wallthickness, but you can also use it to remove one or more faces from the shelled volume, as shown in thfollowing image:

All removed faces can be restored and the wall thickness can easily be changed at any time by using the

S h e ll P r o p e r t ie s command . In addition, you can specify different wall thicknesses for each face.



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Wall direction

From R16 onwards, you can specify whether the thickness is an inside thickness or an outside thickness

Wall Direction while editing the shell property. The default will be inside thickness, and the default value

be 0 mm.

When an "Inside" wall direction is specified, the third tab name becomes "Core". When an "Outside" waldirection is specified, the tab name becomes "Cavity".

When you specify "Inside" wall direction and 0mm thickness, the shellable features generates the outsid

with the positive volumes and no core will be removed.

When you specify "Onside" wall direction and 0mm thickness, the shellable feature generates the inside

the negative volumes and the part disappears from the screen.

If you select several faces, note that clicking the icon displays the Fa c e s t o r e m o v e dialog box tha

allows you to:

q View the list of all of the selected faces

q Remove any face clicking the R e m o v e button

q Replace any face using the R e p l a c e button and selecting a new one in the geometry or the

specification tree.

After a shellable volume is shelled, only features that have behaviors that function within internal volum

such as ribs, can penetrate the shell (or internal) boundary. Thus, features such as boss and reinforcem

cannot penetrate the shell because their behaviors are to add material volume to the outside of another

material volume.

Shell Update Assistant

In some specific cases, the application cannot create non-offsetable surface in the shell computation. An

error message then appears informing you that the resulting geometry cannot be assembled. These erro

are difficult to manage by the user because they generally involve several shellable features and the she

properties. The Shell Update Assistant is to help the user identify the cause of an update error in the sh

computation and then to solve the error.

Core (Specific to Inside wall direction)



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The Shell Update Assistant is a new tab, labeled Core, that is added to the Shell properties dialog. It disthe list of shellable features and how each contributes to the inner shape of the shell. In case of an updaerror in the shell property, the Shell Update Assistant allows the user to quickly identify which shellablefeature(s) caused the error, to activate or deactivate shellable features, to change their core contributiontype, and to try another update.

There are 3 types of core definitions for a shellable feature:

q I n t e r c o n n e c t e d c o r e : The union of the interconnected shellable features is the main input of the sh

property feature that computes only one inner shape for this union.

q I s o l a t e d c o r e : The offset is computed separately for this shellable feature.

q S e l e c t c o r e : The user selects a separate body that defines the inner shape of this shellable.



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Faces causing trouble with Interconnected Coreoption in Shell Properties

The Shell Properties using Selected Core witCore



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You can assign draft properties to a feature in two ways:

q By defining properties specific to the feature you are creating. These properties are available fromDraft tab included in the feature definition dialog box and are referred to as properties Intrinsic to

feature. To see an example, refer to the task describing how to create a Boss.

q The D r a f t P r o p e r t ie s command assigns draft properties to an active body of the FunctionaFeatures. The command requires the following three parameters:

r P u llin g d i r e c t io n : this direction corresponds to the reference from which the draft faces aredefined.

r D r a f t a n g le : this is the angle that the draft faces make with the pulling direction.

r P a r t in g e le m e n t : this plane, face or surface cuts the part in two and each portion is draftedaccording to its previously defined direction. From R16 onwards, you can select a sketch. Whesketch is selected, a GSD surface will be automatically built internally.

r P a r t i n g r a d iu s :

Because some sub-elements of the part can be molded in different directions, there is no

limitation on the number of Draft Properties features you can define in a functional body.

Open the Cutout.CATPart document.

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1 . Click the D ra f t P r o p e r t i e s icon .

Note that it is not possible to set draft properties feature during the definition of a functional

feature.

The D r a f t P r o p e r t ie s dialog box appears.

2 . Select a line or a plane to define the pulling direction.

To define this type of parameter, we recommend no to use any edge supporting a functional

specification.

A red arrow indicates the pulling direction in the geometry area. By clicking on this arrow, you

reverse the direction.

3 . Enter 2deg in the D r a f t a n g le field to edit the default angle value.

4 . Parting elements are optional. For the purpose of our scenario, select E x t r u d e . 1 .



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Contextual commands available from the P a r t in g e le m e n t field let you create planes. These

commands are:

r Cr e a t e P l a n e : for more information, see Creating Planes.

r XY P l a n e : the XY plane of the current coordinate system origin (0,0,0) becomes the parting

element.

r YZ P l a n e : the YZ plane of the current coordinate system origin (0,0,0) becomes the parting

element.

r Z X P l a n e : the ZX plane of the current coordinate system origin (0,0,0) becomes the

parting element.

r Cr e a t e J o i n : joins surfaces or curves. See Joining Surfaces or Curves.

r Cr e a t e E x t r a p o l: extrapolates surface boundaries or curves. See Extrapolating Surfaces and

Extrapolating Curves.

5 . Click OK to confirm the draft properties you defined.

D r a f t P r o p e r t ie s . X is added to the specification tree in the F u n c t i o n a l B o d y . X node.

The blue graphics representation is located on the geometrical element used for defining the

pulling direction, or the parting element or at the part's origin.



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This representation is associative with the geometry so when the parting element or direction ismodified, the representation is updated.

Draft Properties Versus Intrinsic to Feature

The draft properties apply to all the features of the shellable body provided that these are notassigned the I n t r in s i c t o fe a t u r e option to define their draft behaviors. If that occurs, what you

need to do then is just edit the features. More precisely, click the D r a f t tab and change I n t r i n s i c

t o f e a t u r e to D r a f t P r o p e r t ie s . x .

For more information about defining draft properties specific to a feature, refer to the Reference

Information.



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Creating Shape Features

What is a Shape Feature?

ape features are the first entities you add to the active body to create the initial shape of the part. Shap

tures are made up of six types, which interact in unique ways with each other and with the functionaltures. Shape features represent any type of material as well as empty spaces.

en you create shape features with any of the Functional Molded Part capabilities, inherent in the resultintures is the concept of inside and outside. This is the way that most people view objects, which affects h

ey would use an object. In the same way, design elements need to be either inside or outside of the proddel. Thus, Functional Molded Part provides features with an inherent behavior of existing inside or outsid

material feature within the same body. For example, the behavior of a Rib is to exist inside of a shelled

terial feature, and the behavior of a Reinforcement is to exist outside of a material feature. Because of t

erent behavior, features can be made before or after creating the shape feature to which they will be apus, there are no history dependencies.

ape features are defined by how they are manifested and how they interact with the inside or outside ofother shape feature. Depending on the type, a shape feature will do one or more of the following:

Add material

Subtract material

Increase spatial volume

Decrease spatial volume

Protect a spatial volume

erefore, when creating a shape feature that will intersect with another feature in the same body, you woect the volume type according to the results that you need.

hape Feature Types

e following are the different shape feature types:

Shellable Feature

Cavity Feature

Added Feature

Protected Feature



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Internal Feature

Core Feature

hape Types

u need to define a shape type when creating shape features (or certain functional features). To know ho

ate the five possible different shapes, refer to the following tasks:

Prism

Sweep

Revolve

Thick Surface

External Shape



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Shellable Feature

The S h e l l a b l e F e a t u r e command is very often used to create the main shape of the part. It creates hollow feature you can open via the Shell Properties command. Shellable features can have different

shapes: Prism, Sweep, Revolve, Thick Surface or an External Shape.

The S h e l l a b l e F e a t u r e command also adds material volume to the outside of another material volum

that it intersects within the same body, thus extending the boundaries of the volume, as well as

increasing the internal spatial volume of a shelled volume. The added volume inherits the shell prope

(wall thickness) of the body.

This task shows you how to create a shellable prism.

To perform this scenario, sketch a rectangle in the Sketcher workbench then return to the Functional

Molded Part workbench.

1 . Click the S h e l l a b l e F e a t u r e icon .

Shellable features can have different shapes. The S h e lla b le Fe a t u r e dialog box that appears

displays the P r i s m icon as the default shape to be created.



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2 . If you prefer a different shape, click any of the other four shapes available. To know how to create

any of them, refer to the Sweep, Revolve or Thick Surface or External Shape tasks. For the

purposes of our scenario, keep the default option

3 . Select the profile you wish to extrude. If no profile is defined, clicking the S k e t c h e r icon

enables you to sketch the profile you need.

4 . Create a basic prism as explained in the Prism task.

5 . Click OK to confirm and create the shellable feature. S h e lla b le P r is m . X is added to the

specification tree in the Fu n c t io n a l B o d y . X node. By customizing the view (use the H i d d e n

e d g e s p o in t s option), you can notice that the prism is hollow. By default, the shellable feature

has no opening.



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6 . To open it, just double-click the S h e ll P r o p e r t ie s node in the Specification tree or click the S h e l

P r o p e r t i e s command .

7 . For example, select the top face as the face to be removed and enter the value of your choice to

define the wall thickness.

8 . Click OK to confirm the operation. One face has been removed.

9 . For more information, refer to Setting Shell Properties.

Core

1 0 . Click the C o r e tab.

The Core capability enables you to define a core body (offset) for a shellable feature. This

sometimes becomes necessary if the geometrical complexity of the shellable feature is such that



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standard offsets fail.

If your part contains two or more shellable features, you need to choose between three methods:

r I s o l a t e d c o r e

Automatically generates the core at feature level through an offset of only this shellable

features geometry (i.e. the feature is independently shelled). Note that faces of features that

have an isolated core cannot be later selected in S h e ll P r o p e r t ie s command as Fa c e t o

r e m o v e or Face with special thickness.

r I n t e r c o n n e c t e d c o re

Automatically generates the core at functional body level through an offset of the union of all

shellable features contained within the same functional body.

r S e l e c t c o r e

You can select any body to represent the core for the shellable feature. Note that faces of

features that have a "selected core" cannot be later selected in Shell Properties command as

Face to remove or Face with special thickness.



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Cavity Feature

The Ca v i t y Fe a t u r e command adds material to the outside of another material volume that it interswith in the same body. Shell Properties are not inherited.

This task shows you how to create a cavity.

Open the Cavity_Core.CATPart document.

1 . Click the Ca v i t y Fe a t u r e icon .

Cavity features can have different shapes. The Ca v i t y Fe a t u r e dialog box is displayed with the

P r i s m icon as the default shape to be created.

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If you prefer a different shape, click any of the four shapes available. To know how to create any

of them, refer to the Prism, Sweep, Revolve, Thick Surface or External Shape tasks. For the

purposes of our scenario, keep the default option.

2 . Select S k e t c h . 2 as the profile you wish to extrude. If no profile is defined, clicking the S k e t c h e

icon enables you to sketch the profile you need.

3 . In the Lim i t s tab, enter these values:

First length=102mm

Second length=-6mm

4 . Optionally, set the parameters and options you wish to make the shape more complex as

explained in Prism (or Sweep) page.

5 . Click OK to confirm and create the cavity feature. Ca v it y P r i s m . X is added to the specification

tree in the F u n c t i o n a l B o d y . X node.



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Added Feature

The Ad d e d Fe a t u r e adds material to both the outside and inside of material volumes that it intersecwithin the same body. Shell Properties are not inherited.

Open the AddedFeature.CATPart

1 . Click the Ad d e d Fe a t u r e icon .

Added features can have different shapes. The Ad d e d Fe a t u r e dialog box that appears displays

the P r i s m icon as the default shape to be created.

2 . If you prefer a different shape, click any of the other four shapes available. To know how to crea

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any of them, refer to the Prism, Sweep, Revolve, Thick Surface or External Shape tasks. For the


3 . Select S k e t c h . 2 as the profile you wish to extrude. If no profile is defined, clicking the S k e t c h e r


4 . In the Lim i t s tab, check Mir r o r e d e x t e n t and set Fir s t le n g t h : 20mm


explained in Prism (orSweep) page.

6 . Click P r e v i e w .

7 . Check Tr im t o s h e ll to trim the geometry outside of the shell volume.

8 . Click OK to confirm and create the added feature. Ad d e d P r i s m . X is added to the specification




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The Core feature cannot be added to the Added Feature. If you need to add a Core feature, you need

use Protected Feature.



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Protected Feature

The P r o t e c t e d F e a t u r e command creates areas within in the same body, and additional material capenetrate the protected areas. This is useful if you need to reserve space to add another features or areas that must be kept open.

Open the Protected.CATPart document.

1 . Note that the functional body contains a cutout. Cutouts are now displayed in red to improve the

visualization of protected areas.

Click the P r o t e c t e d F e a t u r e icon .

Protected features can have different shapes. The P r o t e c t e d F e a t u r e dialog box that appears


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If you prefer a different shape, click any of the other four shapes available. To know how to crea



2 . Select H o l e s as the profile you wish to extrude. If no profile is defined, clicking the S k e t c h e r


3 . In the Lim i t s tab, enter 20mm to define Fir s t le n g t h .



5 . Check the Thick option that is available for the Prism, Sweep and Revolve shapes. This option

enables you to add material to both sides of the profile.

Three additional options display:

6 . Enter 5mm in the T h i c k n e s s 1 field and click P r e v i e w . Thickness is added to the inside of the

profile. As a protected area, the protected feature is displayed in red.

7 . Clear the N e u t r a l fib e r checkbox, enter 2mm in the T h i c k n e s s 2 field and click P r e v i e w .

Thickness is added to the outside of the profile.



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8 . To add material equally to both sides of the profile, check N e u t r a l f ib e r and click P r e v i e w to se

the result. The thickness you defined for T h i c k n e s s 1 is evenly distributed: a thickness of 5mm

has been added to each side of the profile.

9 . Click OK to confirm and create the protected feature. P r o t e c t e d P r i s m . X is added to the

specification tree in the F u n c t i o n a l B o d y . X node.



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Internal Feature

The I n t e r n a l Fe a t u r e command adds material only to the inside of the Shellable and Core feature t

intersects within the same body. Shellable Properties are not inherited. Thus the external boundaries

the feature remains the same, and the internal feature is reduced in a shelled volume.

Open the Feature.CATPart document.

1 . Click the I n t e r n a l Fe a t u r e icon .

Internal features can have different shapes. The I n t e r n a l Fe a t u r e dialog box that appears


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2 . If you prefer a different shape, click any of the other four shapes available. To know how to crea

any of them, refer to the Prism, Sweep, Revolve, Thick Surface orExternal Shape tasks. For th


3 . Select S k e t c h . 2 1 as the profile you wish to extrude. If no profile is defined, clicking the S k e t c h


4 . In the Lim i t s tab, enter 15mm to define Fir s t le n g t h and 20mm for S e c o n d l e n g t h .



The Ex t e n d a c r o s s r e m o v e d fa c e s option causes a feature not to be confined within the wall o

the deleted face of the shelled volume. See Push - Extend across removed faces.

6 . Check the Thick option that is available for the Prism, Sweep and Revolve shapes. This option

enables you to add material to both sides of the profile.

7 . Enter 7mm in the T h i c k n e s s 1 field. Thickness is added to the inside of the profile.



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8 . Clear the N e u t r a l fib e r checkbox, Enter 3mm in the T h i c k n e s s 2 field and click P r e v i e w .

Thickness is added to the outside of the profile.

9 . To add material equally to both sides of the profile, check N e u t r a l fib e r and click P r e v i e w to se

the result.

1 0 . Click OK to confirm and create the internal feature. I n t e r n a l P r is m .X is added to the specificati


Outside Inside



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Core Feature

The Co r e F e a t u r e command extends the internal shape of a cavity. A spatial volume replaces matervolume only where the Core feature intersects with the Shellable or Cavity feature within the same bThe Core feature is most useful if you want to create a uniquely shaped shell with varying wallthicknesses.

Open theCore.CATPart document and create a cavity feature as explained in Cavity Feature.

1 . Click the Co r e Fe a t u r e icon .

Core features can have different shapes. The Co r e Fe a t u r e dialog box that appears displays th

P r i s m icon as the default shape to be created.

2 . If you prefer a different shape, click any of the other four shapes available. To know how to cre

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3 . Select S k e t c h . 2 as the profile you wish to extrude. If no profile is defined, clicking the S k e t c h e r


4 . In the Lim i t s tab, enter 20 mm to define Fir s t le n g t h , enter 0mm for S e c o n d le n g t h and click

the R e v e r s e D ir e c t i o n button.



6 . Click OK to confirm and create the core feature. Co r e P r is m . X is added to the specification tree

the F u n c t i o n a l B o d y . X node.

The Core feature can only be used for Shellable and Cavity features.



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Creating Functional Features

nctional Features are features with specific design intents that are applied to other features to modify tharacterized by inherent behaviors, they add design details by modifying shape features. Thus, each

nctional feature performs a function, such as creating walls, adding material to the inside or outside of aape feature, or creating and protecting an empty space. After a feature is applied, it retains a behaviorcording to the feature's function and interacts with other features within the same body.

any of the capabilities have been defined based on assembly and manufacturing processes for injectionolded parts and mechanical products.

is section provides information about the following functional features:

Cutout

Pocket

Boss

Rib

Rest

Grill

Reinforcement

Push

Pull

Fitting

Hole, and Threaded Hole. See also Locating Holes.



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Cutout

The C u t o u t command removes material from the active body, based on a selected profile. By removmaterial, you are actually creating a protected volume. The cutout is shelled as you apply it to a shel

feature.

This type of feature requires a closed profile defining the area that a section will be removed from thactive body.

This task shows you how to create a cutout.

Open the Cutout.CATPart document.

1 . Click the C u t o u t icon .

The C u t o u t dialog box is displayed.

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2 . Select S k e t c h . 1 as the closed profile on which you are going to base the cutout. If no profile is

defined, clicking the S k e t c h e r icon enables you to sketch the profile you need.

If you are not satisfied with the profile you selected, note that you can:

r click the P r o file / S u r fa c e field again and select another sketch.

r use any of these creation contextual commands available from the P r o file / S u r fa c e

field:

s G o t o p r o f ile d e f in i t i o n . See Using the Sub-elements of a sketch.

s

Cr e a t e S k e t c h : launches the Sketcher after selecting any plane, and lets yousketch the profile you need as explained in the S ke tche r Use r 's Guide .

s Cr e a t e J o in : joins surfaces or curves. See Joining Surfaces or Curves.

s Cr e a t e Ex t r a c t : generates separate elements from non-connex sub-elements.

See Extracting Geometry.

The prism is the default shape. Just click the s w e e p icon if you want to change. For the


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3 . Set the parameters and options as follows to define the shape as explained in Prism (or Swee

page.

r In the D i s t a n c e tab, enter 17mm to define F lo o r : Le n g t h .

Instead of using the L e n g t h option, you can set the Th r o u g h A ll option, which sets the valu

the cutout length as zero. This extends the cutout infinitely from the profile plane in the spec

direction. Because the cutout is a protected volume, the infinite volume is also protected. Wh

this option is checked, the L e n g t h value field is not available.

Preview of the Through All option defined for the Floor



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O p e n i n g : Le n g t h =0mm

Here again, instead of using the L e n g t h option, you can set the T h r o u g h option, which sets the

value of the cutout depth as zero.

r In the D i r e c t i o n tab

N o r m a l t o p r o f ile option checked

r In the D r a f t tab

A n g l e = 1deg

r In the Fille t tab

All fillet options unchecked.

4 . Click P r e v i e w to get an idea of what the cutout looks like. As a protected area, it is displayed in

red:



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With floor5 . Uncheck the W i t h f lo o r option to see the difference. As indicated by the cursor, the cutout has n

floor.

6 . Check the W i t h f lo o r option to create a floor.

Complement

Checking the C o m p l e m e n t option cuts away what is outside the profile rather than what is inside

the profile, thus creating a complementary (or inverse) cutout, as shown in the following image:



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Cutout Complement

Wall

To define the wall, you can set one of the two options available from the T y p e drop down list:

r Us e b o d y t h i ck n e s s : the cutout wall thickness is that of the active shelled body thickness.

r En t e r t h ic k n e s s : simply enter the value you want. After this option is selected, the value field

becomes available. Wall thickness values can only by positive values.

You can control whether the wall is constructed inside or outside of the selected profile. The

default is an outside wall thickness.

7 . For the purposes of our scenario, set the En t e r t h ic k n e s s option and enter 2mm in the

T h i c k n e s s value field.

8 . Click OK to confirm and create the cutout. C u t o u t . X is added to the specification tree in the

F u n c t i o n a l B o d y . X node.



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Pocket

P o c k e t s are based on simple profiles and usuallyhave side walls and a bottom.

They also have an inner protected volume, which means that no other volumes in the same body canpenetrate this area. If you add a pocket to a shelled body, it creates supporting walls, if necessary.

The direction of a pocket always goes from the inside to the outside of the body.

This task shows you how to create a pocket.

Open the Pocket.CATPart document.

1 . Click the P o c k e t icon .

The P o c k e t dialog box is displayed.

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2 . A pocket requires a closed planar profile. Select S k e t c h . 2 as the profile defining the shape of th

pocket. If no profile is defined, clicking the S k e t c h e r icon enables you to sketch the profile

you need.



r use any of these creation contextual commands available from the P r o file / S u r fa c e

field:

s G o t o p r o f ile d e f in i t io n . See Using the Sub-elements of a sketch.

s Cr e a t e S k e t c h : launches the Sketcher after selecting any plane, and lets you

sketch the profile you need as explained in the S ke tche r Use r 's Guide .


s Cr e a t e Ex t r a c t : generates separate elements from non-connex sub-elements.

See Extracting Geometry.

Shape Definition

3 . The prism is the default shape. Just click the s w e e p icon if you want to change. For the


4 . Set the parameters and options you want to define the shape as explained in Prism or Sweep

page.



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r In the D i s t a n c e tab

F lo o r : Le n g t h =20mm

O p e n i n g : Le n g t h =0mm

5 . Select R e v e r s e D ir e c t i o n button.

Checking the Cle a r a n c e v o lu m e option in the D i s t a n c e tab creates an infinite protected volume

outside of the pocket and in the opposite direction in which the pocket depth is applied, which

prevents any material from the same body from penetrating the area above the pocket. Here is a

preview of the feature. As a protected area, the clearance volume is displayed in red:



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Checking the P r o t e c t e d v o lu m e option reserves space inside of the pocket. A protected volume is

a space that nothing from the same body can penetrate inside of. As a protected area, the

protected volume is displayed in red:



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Checking the O n ly o u t s i d e option creates the pocket only outside of the shelled body. Thus, the

profile of the pocket must extend outside of the walls in order for the pocket to be visible. This

option is not available when P r o t e c t e d Vo lu m e is selected.

Draft

If you wish to define a draft angle, just click the D r a f t tab and select I n t r in s ic t o f e a t u r e in

Draft behavior field. And enter the desired value in the A n g l e field.

The default neutral element (defines a neutral curve on which the drafted face will lie) is the

P r o f ile p la n e . The other possible neutral elements can be:

r F l o o r

r O p e n i n g

r P la n e / S u r fa c e

6 . Click D r a f t tab. Select I n t r in s ic t o f e a t u r e in Draft behavior field. Enter 2deg for A n g l e and

7deg for Cle a r a n c e v o lu m e a n g l e .



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FilletThe La t e r a l r a d iu s option enables you to fillet lateral edges.

The Flo o r r a d iu s option enables you to fillet bottom edges.

7 . Click Fille t tab. Check the La t e r a l r a d iu s and F lo o r r a d i u s option to fillet lateral edges and the

floor edge with 5mm radius value.



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Wall

8 . To define the wall, you can set one of the two options available from the T y p e drop down list:

r Us e b o d y t h ic k n e s s : the pocket wall thickness is that of the active shelled body thickness.

r En t e r t h ic k n e s s : simply enter the value you want. After this option is selected, the value field




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You can control whether the wall is constructed inside or outside of the selected profile for

D i r e c t i o n . The default is an outside wall thickness.

With Co n s t a n t w a l l t h ic k n e s s option, it propagates the fillets inside of the shell to maintain th

wall thickness. Co n s t a n t w a l l t h ic k n e s s is checked by default.

For the purposes of our scenario, set the En t e r t h i ck n e s s option and enter 7mm in theT h i c k n e s s value field.

9 . Click OK to confirm and create the pocket. P o c k e t . X is added to the specification tree in the




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Boss

A boss adds material only to the outside of a material volume that it intersects with in the same bodycreate a boss, there must be a closed profile, consisting of either wireframe or sketching curves, thatdefines the area to which the boss is applied. A boss can be either solid or shelled.

This task shows you how to create a boss on the outside face of a shellable feature.

Open the Feature.CATPart document.

1 . Click the B o s s icon .

The B o s s dialog box is displayed.

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2 . Select S k e t c h . 2 1 as the closed profile. If no profile is defined, clicking the S k e t c h e r ico

enables you to sketch the profile you need.



r use any of these creation contextual commands available from the P r o file / S u r fa c e field

s G o t o p r o f ile d e f in i t io n . See Using the Sub-elements of a sketch.

s Cr e a t e S k e t c h : launches the Sketcher after selecting any plane, and lets you sketch

profile you need as explained in the S k e t c h er User's Guide .


s Cr e a t e Ex t r a c t : generates separate elements from non-connex sub-elements.See

Extracting Geometry.

Distance

3 . Ce i l ing : enter 25mm in the L e n g t h field to define the distance from the sketch plane up to t

ceiling.

4 . O p e n i n g : enter 0mm in the L e n g t h field to define the distance from the sketch plane up to t

opening.



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Setting the To s h e ll option extends the boss to a shellable volume in the active body, in the

opposite direction of the height. The extension of the boss profile must fit inside the boundaries of

the shellable volume. Otherwise, no extension will occur.

Checking the Mir r o r e d e x t e n t option extrudes the profile in the opposite direction using the same

length value as the one defined for the first length.

Clicking the R e v e r s e D ir e c t i o n button reverses the extrusion direction. Another way of reversing

the direction is by clicking the arrow in the geometry area.

Direction

By default, the N o r m a l t o p r o f ile option is checked, meaning that the profile is extruded normal

to the sketch plane. If you wish to specify another direction, just uncheck the option, and then



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select a geometrical element to be used as the new reference. For the purposes of our scenario,

keep the default option.

Clicking the R e v e r s e D ir e c t i o n button reverses the extrusion direction.

Draft5 . If you wish to define a draft angle, click the D r a f t tab.

6 . Set I n t r in s ic t o f e a t u r e to define the draft behavior.

7 . Check the A n g l e field and enter 6deg as the draft angle.

The default neutral element (defines a neutral curve on which the drafted face will lie) isthe

profile plane. The other possible neutral elements can be:

r Cei l ing

r O p e n i n g

r P la n e / S u r fa c e

For the purposes of our scenario, keep the default neutral element.

8 . Click P r e v i e w . The feature looks like this:

Fillet

Checking the La t e r a l r a d iu s option enables you to fillet lateral edges. Then, you merely need to

set the radius value of your choice.

9 . Check the Ce i lin g r a d i u s option to fillet the cylinder's top.



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1 0 . Enter 3.5mm to define the ceiling radius value.

If the boss is to be shelled, you can check the Co n s t a n t w a l l t h i ck n e s s option which propagat

the fillets into the shell, thus maintaining a constant wall thickness.

Wall

To define the wall, you can set one of the two options available from the T y p e drop down list:

r Us e b o d y t h ic k n e s s : the boss wall thickness is that of the active shelled body thickness.

r En t e r t h ic k n e s s : simply enter the value you want. After this option is selected, the value fi


You can control whether the wall is constructed inside or outside of the selected profile. The

default is an inside wall thickness.

1 1 . For the purpose of our scenario, set the En t e r t h i ck n e s s option and enter 8mm in the T h i c k n e

value field.

1 2 . Click OK to confirm and create the boss. B o s s . X is added to the specification tree in the


Outside Inside


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