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Student Notes:

Part Design Features Recognition

Copyright DASSAULT SYSTEMES

C o p y r i g h t D A S S A U L T S Y S T E M E S

Part Design

Feature Recognition

CATIA TrainingExercises

Version 5 Release 17September 2006

EDU-CAT-EN-FR1-FX-V5R17



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Table of Contents

Master Exercise: Creating V5 geometry from an isolated solid

Starting p.4

Dress-up Feature p.5

Sketch-based Feature p.10

Boolean Feature p.14

Draft Feature p.17

Features Rework p.20



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p y r i g h t D A S S A U L T S Y S T E M E S

Master Exercise Feature Recognition

In this exercise, you will learn how to use the Feature Recognition tool in order to createspecifications and to modify them afterwards.

30 min.



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Starting

Open the “FR1_Exercise_start.CATPart” file

Check that “Solid.2” is active

If not, choose “Define in Work Object” in itscontextual menu to activate it.

In the “Part Design” workbench, click the“Automatic Feature Recognition” icon

A “Feature Recognition” panel will bedisplayed

Check you are in the “Automatic” thumbnail We will see the 2 different ways to recognize

“dress-up features”, automatic or manual; youcan practice both of them.



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Starting

Dress-up Feature – Automatic way

Sketch-based Feature

Boolean Feature

Draft Feature

Features Rework

Master Exercise: Feature Recognition



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Select the 3 types of features, “Holes”, “Fillets”, “Chamfers”

Click Apply

All holes, fillets and chamfers are progressively recognized. A panelindicates the recognition process evolution.

Automatic Way to recognize “Dress-up” Features



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Starting

Dress-up Feature – Manual way


Boolean Feature

Draft Feature

Features Rework




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Feature Recognition: Dress-up Features (Fillets) 2/2

As the Chain Faces option is on by default,the application includes propagated facesin the selection.

This is why the “Selected Objects” fieldshows three faces, while we selected only

one geometrical face.

All selected faces are highlighted and

numbered in the geometry area too.

Click “Apply” in the panel

We can repeat the same operation with thesymmetrical fillet

We end up with new V5 features in thetree: “EdgeFillet.1” and “EdgeFillet.2”



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Starting

Dress-up Feature


Boolean Feature

Draft Feature

Features Rework




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Feature Recognition: Sketch-based Features (Groove) 1/3

Select the “Groove” type in the panel

Select the face as shown

Check that “Chain Faces” option is on

This step illustrates how to recognize a groove.



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Geometrical information are generatedby objects selection: all selected facesor edges can be identified.



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We can repeat the same operation with thesymmetrical groove

We end up with new V5 features in the tree:“Groove.1” and “Groove.2”



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Starting

Dress-up Feature


Boolean Feature

Draft Feature

Features Rework




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o p y r i g h t D A S S A U L T S Y S T E M E S

Feature Recognition: Boolean feature 1/2

Select the “Boolean” type in the panel

Select the slot 5 inner faces as shown

This step illustrates a Boolean Feature recognition used:- when the initial geometry is made of complex shapes

- also when the recognition of standard features fails

Because the cavity of this part is not easily identifiable,

we need to use the Boolean option.



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Feature Recognition: Boolean feature 2/2


We can repeat the same operation with the

symmetrical slot

We end up with new boolean features,“Remove.1” and “Remove.2”



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Starting

Dress-up Feature


Boolean Feature

Draft Feature

Features Rework




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Feature Recognition: Draft feature 1/2

Select the “Draft” type in the panel

Select the three faces as shownThis step illustrates how to recognize aconstant angle draft.



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Feature Recognition: Draft feature 2/2


We end up with a new feature “Draft.1”

In case of drafted-filleted features, fillets

have to be recognized before drafts.



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Starting

Dress-up FeatureSketch-based Feature

Boolean Feature

Draft Feature

Features Rework




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Feature Recognition: Features Rework

In “PartBody” contextual menu, select “Define In WorkObject”

This action will activate the PartBody. We will then be ableto visualize the newly created V5 features.

We are now provided with a V5 structure that can be

modified the usual way; for instance:Add a “Smooth Propagation” option to the “Draft”

Change the “Groove” profile by editing the support sketch

Change the “Edge Fillet” value

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