2-Catia Sketcher Ex
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Transcript of 2-Catia Sketcher Ex
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Copyright DASSAULT SYSTEMES 2002 1
Sketcher
CATIA TrainingExercises
Version 5 Release 10
December 2002
EDU-CAT-E-SKE-FX-V5R10
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Table of Contents
1. Sketching Simple Profiles : Recap Exercise p.3
2. Sketching Pre-Defined Profiles : Recap Exercise p.6
3. Editing Profiles : Recap Exercise p.84. Operations on Profiles : Recap Exercise p.10
5. Setting Constraints : Recap Exercise I p.12
6. Setting Constraints : Recap Exercise II p.14
7. Managing Sketches : Recap Exercise p.16
8. Master Exercise: Gasket Presentation p.189. Master Exercise: Gasket (Step 1) p.21
10.Master Exercise: Gasket (Step 2) p.24
11.Master Exercise: Gasket (Step 3) p.26
12.Master Exercise: Gasket (Step 4) p.28
13.Master Exercise: Gasket (Step 5) p.30
14.Master Exercise: Gasket (Step 6) p.35
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Exercise
Sketching Simple Profiles: Recap Exercise
Create a simple profile made up of Lines, a Spline, an Arc, and an Axis
Extra Credit : Create a solid of revolution from your profile and shell it
5 min.
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Do It Yourself (1/2)
Sketching Simple Profiles
1- Lines
2- Spline
3- Arc
4- Axis
Pt5
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1- Lines
2- Spline
3- Arc
4- Axis
Load: CATSKE_Ex_Recap_Sketching_Simple_Profile.CATPart
Do It Yourself (2/2)
Sketching Simple Profiles
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Exercise
Sketching Pre-Defined Profiles Recap Exercise
Create two Pre-Defined profiles - a Hexagon and a Keyhole
Extra Credit : Extrude a solid Pad from your profile
Create two Pre-Defined profiles - a Hexagon and a KeyholeExtra Credit : Extrude a solid Pad from your profile
10 min.
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Do It Yourself
Create these profiles by freehand
Optional: Please check with your Instructor if you have any questions on
how to create a pad from your profile
Pt1
Load: CATSKE_Ex_Recap_Sketching_Predefined_Profiles.CATPart
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Exercise
Editing Profiles : Recap Exercise
Create a Rectangle
Modify the rectangular profile
Surfaces
10 min.
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Do It Yourself
Create these profiles by freehand
1- Create the Rectangle
2- Modify the length and width of the rectangle by dragging lines3- Modify the entire shape of the rectangle by dragging its endpoints
Pt1
Load: CATSKE_Ex_Recap_Editing_Profile.CATPart
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Exercise
Operations on Profiles : Recap Exercise
Design in Context
Project 3D Elements into your Sketch
Trim your profile with Corners and Chamfers
Surfaces
15 min.
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Do It Yourself
In order to get into your Sketch plane:
Select the Sketcher Icon and the plane
1- Project the Splines from the Supports
2- Draw two horizontal lines passing through the projected Splines then trim
them using the Corner and Chamfer tools
3- Optional: Extrude a Pad using your profile
Pt1
Load: CATSKE_Ex_Recap_Operations_On_Profiles.CATPart
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Exercise
Setting Constraints : Recap Exercise I
Create constraints and dimension between the sketch and 3D geometry
15 min.
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Do It Yourself
Make the circle in your Sketch concentric to the cylinder on the Male part.
Put a dimension on the circle.
Dimension the rectangular profile with respect to the faces on the Male part
Optional: Create the Female Pad from your profilePt5
Pt1
Load: CATSKE_Ex_Recap_Setting_Constraints_1.CATPart
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Exercise
Setting Constraints : Recap Exercise II
Study a mechanism using the
Sketchers Animate
Constraint tool
WireframeSurfaces
15 min.
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Do It Yourself
Make the 62 degree angle vary from 62 to - 62 to study the constraints
existing between the different geometrical elements
Pt5
Pt1
Load: CATSKE_Ex_Recap_Setting_Constraints_2.CATPart
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Exercise
Managing Sketches : Recap Exercise
Create an Angled Plane
Change the Sketch Support of the part to this new plane
Surfaces
10 min.
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Do It Yourself
1- Create a plane at 45 Degrees to the XY plane using the line provided
2- Change the Sketch Support for Sketch.1 to this new plane
Pt1
Load: CATSKE_Ex_Recap_Managing_Sketches.CATPart
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Gasket: Presentation
In this exercise you will have the chance to try out various tools for Sketching and Constraining by
designing a profile for a Gasket.
You will test the integrity of your Sketch by extruding the solid Gasket using the Pad tool from the
Part Design Workbench
Finally, you will see how easy it is to modify a sketch
55 min.
Master Exercise
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Design Intent: Gasket
A Gasket is a part used to make a joint fluid tight. It can be made of rubber,
foam, or other industrial polymers that conform to the contours of adjacent
parts thus providing an airtight or liquid tight seal between the parts.
D i P G k t
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Design Process: Gasket
Step 6: Replacing the Sketch
Sketching Pre-Defined
Profiles
Editing Profiles
Performing a Symmetry
Fully Constrain the Gasket
Sketching Simple Profiles
1
2
36
4
5
M t E i
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Master Exercise
Gasket (Step 1) - Sketching Simple Profiles
In this step you will:
Set up the Sketching Mode
Use Simple Profile tools to sketch half of the Gasket
10 min.
D It Y lf (1/2)
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Do It Yourself (1/2)
Sketch the profile shown on the right.
The outer profile should be sketchedwith one use of the Profile tool. The
Sketching mode should be set so that
only Horizontality, Verticality, and
Tangency Constraints are automatically
created.
Place the circles roughly as shown.
Turn off the automatic creation of
Constraints and Dimensions when
sketching the circles.
Load: CATSKE_Ex_Master_Step1.CATPart
Do It Yourself (2/2)
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Do It Yourself (2/2)
Hints:
Go to Tools/Options/Part/Sketcher (in the Menubar)to set Grid Auto detection parameters
Switch Sketching mode in the Tools toolbar
Master Exercise
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Master Exercise
Gasket (Step 2) - Sketching Pre-Defined Profiles
In this step you will: Add a slot on the Gasket
5 min.
Do It Yourself
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Do It Yourself
Sketch the slot in the location
shown on the right using a Pre-
Defined Profile tool. Set the
sketching mode to automaticallycreate Horizontality, Verticality,
and Tangency constraints
Save your model for the next step
Load: CATSKE_Ex_Master_Step2.CATPart
Master Exercise
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Master Exercise
Gasket (Step 3) - Editing Profiles
In this step you will:
Edit the slot on the Gasket
5 min.
Do It Yourself
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Do It Yourself
Change the center of the top arc on
the slot to H=0 and V=20
Change the center of the bottom arc
on the slot to H=0 and V=-20
Save your model for the next step
Load: CATSKE_Ex_Master_Step3.CATPart
Master Exercise
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Master Exercise
Gasket (Step 4) - Performing a Symmetry
In this step you will:Create the symmetrical elements of the Gasket
10 min.
Do It Yourself
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Do It Yourself
Perform a symmetry operation on
the outer profile and the two
circles (Refer to previous page)
in one step.Use AutoSearch to select the
outer profile then use the CTRL
key to select the two circles
Automatically create Symmetry
Constraints (Hint: Turn on
Dimensional Constraints Mode)
Use the Search tool under Edit in
the Menubar to select all the
Symmetry Constraints and No-
Show them.
Save your model for the next
step
Load: CATSKE_Ex_Master_Step4.CATPart
Master Exercise
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Master Exercise
Gasket (Step 5) - Fully Constraining the Gasket
In this step you will:
Completely constrain the Gasket by using a combination of
Geometric and Dimensional Constraints
You will then create the actual solid Gasket using the Pad tool from
the Part Design Workbench. Successfully creating a Pad will also help
verify that your Sketch was correctly defined.
20 min.
Do It Yourself (1/4)
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( )
Create the Geometric and Dimensional Constraints shown on the next page.
Create a Relation between the two 10 mm radius dimensions.
Access the Pad tool in the Part Design Workbench and create a thickness of
5mm. for the Gasket. (Please check with the Instructor on where the Pad
tool is located if you have trouble finding it)
Save your model for the next step
Load: CATSKE_Ex_Master_Step5.CATPart
Do It Yourself (2/4)
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( )
Turn the page if you want Hints :
Do It Yourself (3/4)
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( )
Hints:
You dont have to constrain the left side of the Gasket
because the geometry there is already constrained by the
Symmetry Constraints (in No-Show).
Put a Coincidence Constraint between the points that lie
on top of one another where the right and left profiles
meet.
This is a Coincidence Constraint between the center of
this corner and the lower horizontal line.
These type of dimensions are all off the HV Axes (not the
Symmetry Construction line of the Elongated Hole)
Do It Yourself (4/4)
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Result
Master Exercise
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Gasket (Step 6) - Replacing the Sketch
In this step you will:
Modify the Gasket by replacing its Sketch with a new REV B Sketch
5 min.
Do It Yourself (1/2)
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Replace your original Sketch for the Gasket with the other sketch.
Refer to next page for required result.
Save your model for your own reference.
Load: CATSKE_Ex_Master_Step6.CATPart
Do It Yourself (2/2)
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END of GASKET exercise !