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1 Activate the Edge fillet iconand select the edge to be
2 Select the More button in thedialog box 3 Select the Edge(s) to keep
field
Creating a Fillet with Keep Edge : Rolling on an Edge
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and select the edge to befilleted
(2)
(1)
4 Select the edge on whichthe fillet will roll
You get :
(3)
(4)
5 Enter the radius value (eg : 30) thenselect OK
(5)
Note : This option is also available with the variable fillet function
1 Activate the Edge fillet iconand select the edges to be
2 Select the More button in thedialog box
3Select the Edge(s) tokeep field
Creating a Fillet with Keep Edge : Rolling around an Edge
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and select the edges to befilleted
(2)
(1)
4 Select the edge on whichthe fillet will roll
You get :
(3)
(4)
5 Enter the radius value (eg : 5) thenselect OK
(5)
Note : This option is also available with the variable fillet function
Edge Fillet with Limiting Planes, Faces or surfaces (1/3) You can limit the propagation of an edge filletusing a plane, a face or a surface
Select the Edge Fillet icon1
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Select the Edge Fillet icon1
Select the edge on which you want tocreate a fillet
2
To expand the dialog box,select the More button3
Edge Fillet with Limiting Planes, Faces or surfaces (2/3) You can limit the propagation of an edge filletusing a plane, a face or a surface
Select the Limiting elementfield
4 Select the limiting surface5
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field
Select to changethe direction6
Edge Fillet with Limiting Planes, Faces or surfaces (3/3) You can limit the propagation of an edge filletusing a plane, a face or a surface
Select OK in the dialog box7
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You get:
Edge Fillet: Trim RibbonsWhen choosing the Tangency propagation mode, you can also trimoverlapping fillet. To do so, simply check the Trim Ribbons option inthe dialog box
Select the Edge Fillet icon1 Select the edges to be filleted2Modify the fillet radius and activateh T i Ribb i3
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g1 Select the edges to be filleted2 the Trim Ribbons option3
Select OK in the dialogbox
4
You get:
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l h f b
Select TritangentFillet icon
Multi-select two faces to befilleted
1
Tritangent Fillets2
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Select the face to beremoved by the fillet
3
Multi-selecting all three faces tellsCATIA to remove the third face selected
You get:
Select edge tobe filleted
1 Select Variable RadiusFillet icon
Variable Radius Fillets2
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By double clicking,modify the radii
3
You get:
Variable Radius Fillet: Circular Close Edge (1/2)
Select the Variable S l h P i fi ldS l h d b fill d
It is possible to build a variable radius fillet on a circularclose edge
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Select the VariableRadius Fillet icon
Select the Points field1 2 3Select the edge to be filleted
4 Deselect the defaultvertex
Select the two new vertices5
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Once an edge has been selected during a variable radius fillet creation, two radiuslabels appear at the edge extremities. If you modify the radius value in the dialogbox, the two radius label will be modified at the same time. If you want to modifyonly one of the radii you will have to double click on the radius label and modify
Radius Definition per Edge when Creating a Variable Radius Fillet
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1 Select the Variable fillet icon 2 Select the edge to befilleted
only one of the radii, you will have to double click on the radius label and modify
its value
3 Enter a new radius value( eg :10)
4 Notice that the two radius values aremodified at the same time
To add additional points on the edge to be filleted, you can select planes.CATIA computes the intersections between these planes and the edge to
Variable Radius Fillets
Additional Information (1/2)
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Variable radius fillet
CATIA computes the intersections between these planes and the edge todetermine the useful points. In this example, three planes were selected. Now, ifyou move these planes later, CATIA will compute the intersections again andmodify the fillet accordingly. The intermediate radii can be nil
Capability to create a variable radius fillet with thefillet sections keeping a constant direction inaccordance with a spine
The fillet sections areperpendicular to the spine
Additional Information (2/2)
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Spine
The fillet sections areperpendicular to filleted edge
Edge to befilleted
The dotted blue circles indicate the fillet sections but CATIADOES NOT SHOW THEM when creating a fillet
With spine
Without spine
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Chamfering consists in removing or adding a flat section from a selectededge to create a beveled surface between the two original faces common tothat edge. You obtain a chamfer by propagation along one or several edges.
What is a Chamfer ?
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Propagation modes
Tangency
Minimal
Creating Chamfers ... To create a chamfer, you need to select the edge to be filletedand to enter the chamfer dimensions
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Select the edge to be
chamfered
1
Enter the chamferdimensions
2
OK to validate3
Multi-select edgesto be chamfered
1 Modify Chamferdefinition
3
Symmetric Chamfer
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Select Chamfericon
2
You get:
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Chamfers can be created by selecting a face whose edges areto be chamfered
Chamfers
Additional Information...
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Select face Chamfer
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Creating Pads with Integrated Draft and Fillets ... To create a pad with integrated draft and fillets, you need toselect a profile then enter the pad dimensions
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Select the profile1
Enter the paddimensions
2
OK to validate3
(1)
1 Select the Drafted Filleted Padicon
The Drafted Filleted Pad function allows you to create a pad which includes ageneral draft, a Lateral Radius, a First Limit Radius and a Second LimitRadius. The draft angle and the radii are created as individual features
4 Enter the pad Length
5 Enter the draft angle
Drafted Filleted Pad
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2 Select the sketch that willbuild the pad
(2)
3 Select the second limit
(3)
5 Enter the draft angle
6 Enter the lateral radius
7 Enter the First limit radius
8 Enter the Second limit radius
9 If necessary, reverse the paddirection
10 Select OK
You get :First limitradius
Secondlimitradius
LateralRadius
DraftAngle
By default, the neutral element used tocompute the draft angle is the first limit ofthe pad. However, you can use the secondlimit as the neutral element
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Drafted Filleted Pocket
You w i l l learn how to c rea te a poc ket which inc lud esfi l le ts and a draft angle
This funct ion wil la l lowyo utocrea teapocketwi thdraf t
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Drafted Filleted Pocket
This func t ion wi l l a l low yo u to c rea te a pocket wi th draf tand f i l le ts s im ul taneous ly, ra ther than crea ting eachfeature separately
What is Pocket with Integrated Draft and Fillets ? A pocket with an integrated draft angle and fillets is a solid which is extruded from a 2D profile, andwhich includes fillets and draft angle
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LateralRadius
DraftAngle
Firstlimitradius
Secondlimitradius
Creating Pockets with Integrated Draft and Fillets To create a pocket with integrated draft and fillets, you need toselect a profile then enter the pocket dimensions
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1
2
3
Select the profile
Enter the pocketdimensions
OK to validate
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Additional Information...
After a drafted filleted pocket creation, the tree contains :
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A pocket A draft angle Three fillets
You w i l l learn how to sh e l l 3D par t
Shelling a Part
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Shelled Part
Shelling a feature means emptying it, while keeping a giventhickness on its sides Shelling may also consist in adding thickness to the outside You can have different thicknesses per faces
What is Shelling ?
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Faces to be removed
ShellOther thickness face
Creating Shells ... To create a shell, you need to select the face(s) to be openedthen to define the thickness(es) of the shell
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Select the face to beopened
1
Enter the shellthickness
2
OK to validate3
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Shelling a feature means emptying it, while keeping agiven thickness on its sides. Shelling may also consist inadding thickness to the outside
Thickness inside & outside
Additional Information...
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Inside only Inside &Outside
It is possible to create a shell with a thickness greaterthan the smallest fillet radius on the part
Shell with Thickness > Curvature
Faces to be removed
Modified thicknesses Dotted blue lines = Cube before the shell operation
R5
Thickness=15
You wi l l learn how to c rea te threads and taps
Thread and Tap
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Creating Thread and Tap ... To create a thread:
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Define the Lateraland Referencesurface
1
Define the threadparameters
2
The threadappears in the
tree
3
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7 Select the Preview button inthe dialog box, you will get apreview of the thread
8 Select the OK to validate thethread creation
Creating Thread and Tap (2/2)
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You get:
During the thread creation CATIA helpsyou with the thread parameters inaccordance with the selected standard
You w i l l learn how to c rea te pa t terns o ut of anexis t in g feature
Creating Patterns
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Rectangular PatternCircular Pattern
User Pattern
Patterns allow you to create several identical features from anexisting one and to simultaneously position them on a part
What is a Pattern ?
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Rectangularpattern
CATIA allows you to define three types of patterns which makes
the creation process easier : rectangular circular user patterns
3 types of patterns
Pad with patternfeature
Creating Patterns ...
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Select feature to beduplicated
1
Select thedirections then fill
the dialog box
2
OK to validate3
Select RectangularPattern icon
then select S if th d di ti i t3
Specify the first direction of the pattern by selecting an edgeusing Reverse to change the direction if needed
2Rectangular Pattern
1
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then selectpocket to usefor pattern
Specify the second direction as in step2 under the Second Direction tab (Reverse if necessary)
3
You get:
Select the feature to bepatterned
1 Select Circular Patternicon
Define pattern parameters and specify therotation axis of the pattern by selectingthe face
3Circular Pattern
2
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You get:
Select UserPattern icon
Select hole to be patterned1
Select 'Sketch 4' in the specificationtree. This sketch includes the ninepoints you need to locate theduplicated holes
3User Pattern
2
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You get:
1 With the Ctrl key held down, select the hole and the fillet(you can select them from the solid or from the tree) 2
Activate the Circular patternicon
It s possible to apply a rectangular, circular or user pattern to several features inone shot. We are going to apply a circular pattern to a hole and a fillet
(2)
Pattern of a Selection of Features (1/2)
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(2)
3 Select the Reference field
(1)
4 Select the circular edge to definethe pattern axis of rotation
(3)
(4)
5 Select the Instance(s) field andenter 6
6 Select the Angular spacing fieldand enter 60
(6)(5)
7 Select the Crown Definition tab
It s possible to apply a rectangular, circular or user pattern to several features inone shot. We are going to apply a circular pattern to a hole and a fillet
(7)
8 Select the Circle(s) field and enter 4
Pattern of a Selection of Features (2/2)
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(10)
9 Select the Circle spacing fieldand enter 20
(9)
10 Select OK
You get :
(8)
Exploding a PatternCapability to explode a pattern in order to get one feature perinstance
Select the Update icon
2Select the Explode command from thepattern contextual menu
1
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You get:
2 Select the planar face (or plane) that will be the plane ofsymmetry
1 Activate the Mirror icon
Before building a part, you can search for the symmetry and decide to build onlythe half of the part, then use the Mirror function to get the whole part
(2)
Mirror
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(1)
3 Select OK
( )
(3)
You get :
1 With the Ctrl key held down, select the pad (Pad.2) and thetwo last fillets (you can select them from the solid or from
the tree)
2 Activate the Mirror icon
It s possible to apply a Mirror to several features in one shot
(2)3 Select the Mirroring element
Mirror of a Selection of Features
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3 Select the Mirroring element(plane or planar face)
(1)
4 Select Ok in the dialog box
(3)
(4)
You get :
Deleting the instances of your choice is possible when creatingthe pattern. In the pattern preview, just select the pointsmaterializing instances. Conversely, selecting these points again
will make CATIA create the corresponding instances
Deleting or adding instances at creation
Additional Information (1/2)
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Instances selection
To define a direction, you can select an edge or a planar face. Selecting aface will allow both directions of a rectangular pattern to be defined or theaxis of rotation normal to the face for a circular pattern
Direction of creation
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Modifying PartsYou w i l l l ea rn how to m odi fy p rof i les and fea tures to change 3D par t
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Modifying Profile GeometryReordering FeaturesModifying Features
You w i l l learn how m odify 2D ske tch e lem ents toprop agate changes to 3D par ts
Modifying Profile Geometry
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After ChangeBefore
Sketch-based features rely on profiles for their shape Especially if defined with the proper constraints that represent thedesign intent of the part, the profile geometry can easily be changed fordownstream design changes
Why Modify Profile Geometry?
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Modified cube
Chamfer added fromsketch
Changing the sketch that defines a feature propagates thatchange to all subsequent operations involving the feature
Design change
Modifying Profiles ...
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Edit the sketchcorresponding to the
feature to bemodified
1
Modify the profile or dimensions2
Update the Part3
Alter the existing coordinates of theline to new parameters (V: 50mm)
2Double click line to editits coordinates
1
Modifying Profile Element Coordinates
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H: -40V: 50
This method works on most constructionentities, opening the appropriate dialogfor the entity selected
The profile stretches based on where you movethe element and the constraints you have applied
2
Click and drag the linedownward to its new location
1
Editing Profile Shape and Size
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You have modified the shape ofthe profile without the use of anyintermediary menu options
Select the element to be deleted1
Deleting Sketcher Elements
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Select Edit->Delete and the element iserased. Now multi-select additionalelements to delete
2
Use the contextual menu (selectMouse Button 3 while cursor is onone of the selected elements) todelete
3 You get:
To delete a set of 2D elements, multi-select the elements youwish to delete using the click and drag method. Then go to theEdit menu and select delete
Deleting elements
Additional Information...
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Copyright DASSAULT SYSTEMES 2002 154Multi-selection
You w i l l learn how to reorder features m aking up a 3D par t
Reordering Features
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Pad moved before mirrorPad after mirror operation
Reorder allows you to correct a part so that your design intentis preserved
Why to Reorder Features ?
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One cylinder
Changes and features created later in the process can easily beincorporated into the part structure taking into account thedesign intent
Design change
Two cylinders whenmoved before mirror
Reordering Features ...
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SelectReorder from
the featurecontextual
menu
1
Select the feature after whichthe hole will be placed
2
Update the Part3
Right click the feature to bereordered to get a contextual menu
1
Pad.2 was incorrectly createdafter the mirror operation, so wemust reorder the pad before themirror
Select Reorder2
Reordering Features
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Select Pad.1 in thespecification tree as thefeature to reorder after(Pad.1 is shown as thepreview)
3
You get:
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Often, as a design matures, the initial configuration of a part needs refinementthrough the modification of feature parameters or the addition/removal of features
Why Modify Features ?
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Modified pad
Draft angle
Pad length
Modifying Features ...
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Double click on thefeature to be modified
1
Modify the feature dimensions2
Update the Part3
Modify the draftspecifications by
double clicking thedimension orentering in thed l b
2
Double click the feature or itsspecification to edit the feature
1
Redefining Feature Parameters
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dialog box
Next, modify Pad.1 of the part by rightclicking the feature in the specificationtree and selecting Definition...
3then modify thedimension directly orthrough its dialog box
You get:
Double click feature or itsspecification in the tree to edit hole
1
Change the hole definition in thedialog box or double click ondimensions to modify directly
2
Editing Holes
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Modify positiondimensions by doubleclicking them to modifydirectly
You get:
1 Double click on the pad to bemodified
3 Modify the constraint
(1)
4 Leave the sketcher byselecting the Exit icon
(4)
Sketch Edition During Pad Edition
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2 Select the sketch icon from the dialogbox in order to activate the sketcher
(2)
5 If necessary, select theUpdate All icon
You get :
(3)
(5)
1 Double click on the pad to bemodified
3 Select the replacing sketch
(1)
4 Select OK
(3)
(4)
Replacing Sketch During Pad Edition
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2 Select the sketch field from the dialogbox
(2) You get :
5 If necessary, select the UpdateAll icon
(5)
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