Copyright DASSAULT SYSTEMES 20021 Wireframe and Surface Design CATIA Training Exercises Version 5...
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Transcript of Copyright DASSAULT SYSTEMES 20021 Wireframe and Surface Design CATIA Training Exercises Version 5...
Copyright DASSAULT SYSTEMES 2002 1
Wireframe and Surface Design
CATIA Training Exercises
Version 5 Release 10December 2002
EDU-CAT-E-WFS-FX-V5R10
Copyright DASSAULT SYSTEMES 2002 2
Table of Contents
1. Master Exercise : Mobile Phone p. 31. Mobile Phone : Presentation p. 42. Mobile Phone : Creating the wireframe geometry p. 83. Mobile Phone : Creating the surfaces p. 124. Mobile Phone : Trimming and joining the body surfaces p. 175. Mobile Phone : Creating the part body p. 216. Mobile Phone : Modifying the geometry p. 24
2. Recap Exercise p. 261. Button (Step 1) : Creating the wireframe geometry p. 272. Button (Step 2) : Creating the surfaces p. 293. Button (Step 3): Creating the solid p. 314. Button (Step 4): Modifying the geometry p. 34
3. Wrench Body Exercise p. 361. Wrench body : Presentation p. 372. Wrench body : Creating the Surface of the Handle p. 413. Wrench body : Creating a Lofted Surface to Link the Parts p. 444. Wrench body : Creating the Side Surface of the Head p. 485. Wrench body : Creating a Connecting Surface p. 516. Wrench body : Completing the Wrench Body p. 53
Copyright DASSAULT SYSTEMES 2002 3
Master Exercise : Mobile PhoneMobile Phone: Presentation
Mobile Phone (1): Creating WireframeGeometry
Mobile Phone (2): Creating Basic Surfaces
Mobile Phone (3): Trimming and Joining the Body Surfaces
Mobile Phone (4): Creating the Part Body
Mobile Phone (5): Modifying the Geometry
Copyright DASSAULT SYSTEMES 2002 4
ExerciseMobile Phone : Presentation
In this exercise you will see how to create a mobile phone body using the Wireframe and Surface Design and Part Design workbenches:
Creating wireframe elements (Points, splines, circles, projected curve) Creating surfaces (swept, extruded, blend, loft) Manipulating surfaces (trim, symmetry, join) Creating solid from surface (Close, fillet) Modifying the geometry
35 min
Copyright DASSAULT SYSTEMES 2002 5
Design Intent : Mobile Phone
• Creation of guide and profile curves by using sketcher and spline.
• Creation of surfaces using Sweep, Extrude, Blend and Loft
• Operations on surfaces using Trim, Symmetry and Join
• Creation of solid from surfaces using Close and Fillet
• Modification of the geometry by changing parameters of the surface definition
Copyright DASSAULT SYSTEMES 2002 6
And now practice in the context of the Mobile phone
Enter the Wireframe and Surface Design
workbench
Create the surfaces
2Trim and join
the body surfaces
3Create the part
body4
Enter the Part Design
workbench
Modify the geometry
5
Create the wireframe geometry
1
Copyright DASSAULT SYSTEMES 2002 7
And now practice in the context of the Mobile phone
Enter the Wireframe and Surface Design
workbench
Trim and join the body surfaces
3Create the part
body4
Enter the Part Design
workbench
Modify the geometry
5
Create the wireframe geometry
1
Create the surfaces
2
Copyright DASSAULT SYSTEMES 2002 8
ExerciseMobile Phone : Creating the wireframe geometry
Create the guide curves and profiles.
10 min
Copyright DASSAULT SYSTEMES 2002 9
Do It Yourself (1/2)
1- Create these points : (0,0,9), (40,0,7.5), (60,0,6), (80,0,5.8)
and (90,0,5.8).
2- Draw a spline passing through these points imposing a
tangency condition with the X axis at the two extremities.
3-Project Guide Curve 2 into ZX plane normally.
4-Create this sketch in the YZ plane and rename it “Profile”:
Guide curve 1
Guide curve 2
Part used: Mobile_phone_step1-1.CATPart
Copyright DASSAULT SYSTEMES 2002 10
Do It Yourself (2/2)5- Create this circle centered on the point (70,0,0):
6- Create the circle centered on the point (20,0,0):
Copyright DASSAULT SYSTEMES 2002 11
And now practice in the context of the Mobile phone
Enter the Wireframe and Surface Design
workbench
Trim and join the body surfaces
3Create the part
body4
Enter the Part Design
workbench
Modify the geometry
5
Create the wireframe geometry
1
Create the surfaces
2
Copyright DASSAULT SYSTEMES 2002 12
ExerciseMobile Phone : Creating the surfaces
Create swept, extruded, loft and blend surfaces.
10 min
Copyright DASSAULT SYSTEMES 2002 13
Do It Yourself (1/3)
1- Create a swept surface using “Guide curve 1” and “Guide curve 2” as guide curves, the sketch “Profile”as profile and its two vertex points as anchor points.Rename it “Side”.
Part used: Mobile_phone_step2-1.CATPart
Copyright DASSAULT SYSTEMES 2002 14
Do It Yourself (2/3)
2-Extrude the Spline curve in the ZX direction with these parameters:
3-Create a Blend surface between the Spline curve and “Guide Curve 1”, using the previous extrusion as tangency surface and rename it “Top”:
Copyright DASSAULT SYSTEMES 2002 15
Do It Yourself (3/3)
4-Create a loft surface between the “Guide Curve 2” and the Projected curve. Rename it “Bottom”:
5-Extrude the two circle arcs in the XY direction using these parameters:
Copyright DASSAULT SYSTEMES 2002 16
And now practice in the context of the Mobile phone
Enter the Wireframe and Surface Design
workbench
Create the surfaces
2Trim and join
the body surfaces
3Create the part
body4
Enter the Part Design
workbench
Modify the geometry
5
Create the wireframe geometry
1
Copyright DASSAULT SYSTEMES 2002 17
ExerciseMobile Phone : Trimming and joining the body surfaces
Join, Trim and Mirror the surfaces.
5 min
Copyright DASSAULT SYSTEMES 2002 18
Do It Yourself (1/2)1- Join the surfaces “Side”, “Top” and “Bottom”:
2- Trim the previous join surface with the first extruded surface from the circle
arcs:
3-Trim the previous trim surface with the remaining extruded surface:
Part used: Mobile_phone_step3-1.CATPart
Copyright DASSAULT SYSTEMES 2002 19
Do It Yourself (2/2)
4- Symmetry the resulting surface with the ZX plane and join the surfaces:
Copyright DASSAULT SYSTEMES 2002 20
And now practice in the context of the Mobile phone
Enter the Wireframe and Surface Design
workbench
Create the surfaces
2Trim and join
the body surfaces
3Create the part
body4
Enter the Part Design
workbench
Modify the geometry
5
Create the wireframe geometry
1
Copyright DASSAULT SYSTEMES 2002 21
ExerciseMobile Phone : Creating the part body
Close the body surface into a solid, then fillet the solid.
5 min
Copyright DASSAULT SYSTEMES 2002 22
Do It Yourself
Access the Part Design workbench and define in work object the “Solid” body.
1- Close the surface Body surface.2- Add variable fillets on the two side top edges (from 4mm to 2mm)
3- Add these 2mm edge fillets :
Part used: Mobile_phone_step4-1.CATPart
Copyright DASSAULT SYSTEMES 2002 23
And now practice in the context of the Mobile phone
Enter the Wireframe and Surface Design
workbench
Create the surfaces
2Trim and join
the body surfaces
3Create the part
body4
Enter the Part Design
workbench
Modify the geometry
5
Create the wireframe geometry
1
Copyright DASSAULT SYSTEMES 2002 24
ExerciseMobile Phone : Modifying the geometry
Modify the geometry by modifying a construction element.
5 min
Copyright DASSAULT SYSTEMES 2002 25
Do It Yourself
1- Edit this point double-clicking on it:
2- Modify its Z coordinate from 7.5 to 8.5 and its X coordinate from 40 to 39:
You will modify the overall shape of the part by changing the parameters of a construction element.
Part used: Mobile_phone_step5-1.CATPart
See that the wireframe modifications are impacting the body:
Copyright DASSAULT SYSTEMES 2002 26
Recap ExerciseIn this exercise you will see how to create a button body using the Wireframe and Surface Design and Part Design workbenches:
Creating the profiles Extruding the profile Creating the solid part Modifying the geometry
25 min.
Copyright DASSAULT SYSTEMES 2002 27
ExerciseButton (Step 1) : Creating the wireframe geometry
In this step you will: Create the points Create the profile curves Create the direction lines
5 min.
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Do It Yourself
1- Create 5 points : Pt1(0,0,5), Pt2(0,10,9), Pt3(0,23,7), Pt4(0,30,8), Pt5(-20,30,7)
2- Create a spline passing through Pt1 to Pt4
3- Create a line passing through Pt4 and Pt5
4- Draw a sketch on XY plane with two coincidences and a radius of 20mm
5- Draw a vertical line on YZ plane
Pt1
Pt2 Pt3
Pt4 Pt5
Spline.1
Line.1Pt5
Pt1
Sketch on XY plane (4-) Line on YZ plane (5-)Points, Spline, Line (1-, 2-, 3-)
Create the wireframe geometry:
Button_step1.CATPart
Copyright DASSAULT SYSTEMES 2002 29
ExerciseButton (Step 2) : Creating the surfaces
In this step you will: Create extruded surfaces
5 min.
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Do It Yourself
1- Create the first extruded surface : select profile Sketch.1 and direction Sketch.2
2- Create the second extruded surface : select profile Spline.1 and direction Line.1
Spline.1
Line.1
Sketch.1
Sketch.2
Surface Extrude. 1 (1-) Surface Extrude. 2 ( 2-)
Create the basic surfaces:
Button_step2-3.CATPart
Copyright DASSAULT SYSTEMES 2002 31
ExerciseButton (Step 3): Creating the solid
In this step you will: Create a pad using the existing surfaces as limits Add fillets on edges Shell the part
10 min.
Copyright DASSAULT SYSTEMES 2002 32
Sketch.3 on XY plane (1-) Sketch.4 YZ plane (2-)
1- Create a sketch (rectangular contour) on the XY plane
2- Create a sketch (trapezoidal contour) on the YZ plane
Do It Yourself (1/2)
Button_step4.CATPart
Copyright DASSAULT SYSTEMES 2002 33
Pad up to surface (3-) Split of pad (4-) Fillets (6-)
3- Create a pad on Sketch.3, up to the Extrude.2 surface
4- Split Pad.1 with Extrude.1 as splitting surface
5- Create a pad on Sketch.4 up to the Extrude.1 surface
6- Make 1.5 mm fillets on the 6 horizontal and vertical edges
7- Shell the bottom faces with 1mm (5 faces)
Do It Yourself (2/2)
Pad up to surface (5-)
Shell (7-)
Copyright DASSAULT SYSTEMES 2002 34
ExerciseButton (Step 4): Modifying the geometry
In this step you will: Modify the geometry by moving the definition points of the spline and changing parameters in the Sketcher
5 min.
Copyright DASSAULT SYSTEMES 2002 35
1- Double click on Pt3 and change the Z value to 5mm to modify the shape of the spline
2- Open Sketch.1 to change the radius value to 25mm
Pt3
Sketch.1 (2-)Point on spline (1-)
Do It Yourself
Button_step5.CATPart
Copyright DASSAULT SYSTEMES 2002 36
Wrench Body Exercise
Wrench Body: Presentation
Wrench Body (1): Creating the Surface of the Handle
Wrench Body (2): Creating a Lofted Surface to Link the Parts
Wrench Body (3): Creating the Side Surface of the Head
Wrench Body (4): Creating a Connecting Surface
Wrench Body (5): Completing the Wrench Body
Copyright DASSAULT SYSTEMES 2002 37
ExerciseWrench body : Presentation
In this exercise you will learn how to create a wrench body using the Wireframe and Surface Design and Part Design workbenches :
Creating wireframe elements (point, line, spline) Creating surfaces (revolution, loft, sweep) Manipulating surfaces (symmetry, join) Creating solid from surface (close, extrude)
35 min
Copyright DASSAULT SYSTEMES 2002 38
Design Intent : Wrench Body
• Creation of guide, section and spine curves using spline, sketcher, project and split
• Creation of revolution, loft and sweep surfaces
• Creation of solid from surfaces using close and thick
Copyright DASSAULT SYSTEMES 2002 39
And now practice in the context of the Wrench Body
Enter the Wireframe and Surface Design
workbench
Enter the Part Design
workbench
Create the surface of the
handle
1
Create a lofted surface to link
the parts 2Create the side surface of the
head
3
Create a connecting
surface
4
Complete the wrench body
5
Copyright DASSAULT SYSTEMES 2002 40
And now practice in the context of the Wrench Body
Enter the Wireframe and Surface Design
workbench
Enter the Part Design
workbench
Create a lofted surface to link
the parts 2Create the side surface of the
head
3
Create a connecting
surface
4
Complete the wrench body
5
Create the surface of the
handle
Create the surface of the
handle
1
Copyright DASSAULT SYSTEMES 2002 41
ExerciseWrench body : Creating the Surface of the Handle
Create the surface of the handle by revolving a spline defined in 3D.
5 min
Copyright DASSAULT SYSTEMES 2002 42
Do It Yourself
1- In the WIREFRAME Open Body create three points : (115,7,0), (122,6,0) and (127,5,0). Rename them Point A, Point B and Point C.2- Create a spline selecting Vertex 1 then points A to C and finally Vertex 2.3- Impose horizontal tangency at the end points of the spline.4- In the SURFACES Open Body create a surface, revolving the spline 360 degrees around the horizontal line of the sketch. (360-degree revolution is needed for the downstream close operation to create a solid in Part Design).
Revolving surface (4-)Points, Spline (1-, 2-, 3-)
Spline 1
Vertex 2 Vertex 1
ABC
Part used: Wrench_body_step1.CATPart
Copyright DASSAULT SYSTEMES 2002 43
And now practice in the context of the Wrench Body
Create the surface of the
handle
Create a lofted surface to link
the parts
Create a lofted surface to link
the parts
Enter the Wireframe and Surface Design
workbench
Enter the Part Design
workbench
2Create the side surface of the
head
3
Create a connecting
surface
4
Complete the wrench body
5
1
Copyright DASSAULT SYSTEMES 2002 44
ExerciseWrench body : Creating a Lofted Surface to Link the Parts
Create a lofted surface to associate the head with the link.
10 min
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Do It Yourself (1/2)
Plane and Sketch.4 Middle pointsSketch.5
1- In the WIREFRAME Open Body create a plane with a 7.2mm distance from the end face
of the link.
2- On the created plane create an arc of a circle (radius =7.2). Define three coincidences,
two between the end points of the arc and the H-axis of the Sketcher and one between
the center point of the arc and the V-axis of the Sketcher.
3- On the bottom face of the head, create an arc passing through the two vertices of the
face (radius =24). Define four coincidences, two between the arc and the vertices of the
bottom face and two between the end points of the arc and the H-axis of the Sketcher.
4- Create the middle points of Sketch.3, Sketch.4 and of the edge curve of the link end
face.
Offset plane
Link end faceSketch.4
Sketch.5
Head bottom face
Middle points
Part used: Wrench_body_step2.CATPart
Copyright DASSAULT SYSTEMES 2002 46
Do It Yourself (2/2)
Splines (5) Symmetry and join (8-, 9-)Lofted surface (6,7)
5- Create three splines, two passing through the two sets of end points of the three arcs
and one passing through the set of middle points created on the three arcs. The three
arcs are Sketch.3, Sketch.4 and the edge curve of the link end face. Impose an horizontal
tangency to each spline on the link end.
6- In the SURFACES Open Body, create a loft using the splines 2 and 3 as sections, the
ZX plane as tangent direction for the spline.3, and the 3 circle arcs as guide curves.
7- Create a loft using the splines 3 and 4 as sections, the ZX plane as tangent direction
for the spline.3, and the 3 circle arcs as guide curves.
8- Apply a symmetry to the lofted surface with respect to the XY plane.
9- Join the lofted surfaces and the symmetries.
Spline.2
Spline.4Spline.3
S3
Loft 1
Loft 2
Copyright DASSAULT SYSTEMES 2002 47
And now practice in the context of the Wrench Body
Create the side surface of the
head
Create the side surface of the
head
Create a lofted surface to link
the parts
Create the surface of the
handle
Enter the Wireframe and Surface Design
workbench
Enter the Part Design
workbench
2
3
Create a connecting
surface
4
Complete the wrench body
5
1
Copyright DASSAULT SYSTEMES 2002 48
ExerciseWrench body : Creating the Side Surface of the Head
Create the side surface of the head by a sweeping a profile.The profile and guide curves are created from the existing curves by projection and re-limited.
10 min
Copyright DASSAULT SYSTEMES 2002 49
Do It Yourself
1- In the WIREFRAME Open Body extract with tangency continuity the upper and lower
edges of the head..
2- Split sketch.5 with the side face of the head.
3- In the SURFACES Open Body define the side surface: create a sweep with a profile
(Split.1=sketch.5 split) and two guide curves (Extract.1 and Extract.2).
Part used: Wrench_body_step3.CATPart
Extracted edges
Side face of the head
Split of Sketch.5
Side surface
Copyright DASSAULT SYSTEMES 2002 50
And now practice in the context of the Wrench Body
Create a connecting
surface
Create a connecting
surface
Create the side surface of the
head
Create a lofted surface to link
the parts
Create the surface of the
handle
Enter the Wireframe and Surface Design
workbench
Enter the Part Design
workbench
2
3
4
Complete the wrench body
5
1
Copyright DASSAULT SYSTEMES 2002 51
ExerciseWrench body : Creating a Connecting Surface
Create a connect surface at a junction by sketching the profile and revolving it.
5 min
Copyright DASSAULT SYSTEMES 2002 52
Do It Yourself
1- In the WIREFRAME Open Body sketch the fillet profile on XY plane.
- activate the option Construction elements.
- create lines on the bottom and top horizontal edges and on the vertical edge of the
link by intersecting the 3D elements.
- define two coincidences between the profile and the bottom horizontal edge and
between the profile and the vertical edge, two horizontal tangencies at the ends of
the profile and two radius constraints (18mm and 5 mm).
2- In the SURFACES Open Body create the surface by revolving Sketch. 6 around the
horizontal axis of Sketch.1 (360deg).
Sketch. 6
Sketch.5 (1-) Surface of revolution (2-)
Part used: Wrench_body_step4.CATPart
Copyright DASSAULT SYSTEMES 2002 53
ExerciseWrench body : Completing the Wrench Body
Create solids by extruding and closing the surfaces.Remove the exceeding solid by pocketing.
5 min
Copyright DASSAULT SYSTEMES 2002 54
Do It Yourself (1/2)
Sweep.1PartBody
1
Thick / Mirror / Close (2-, 3-, 4-)
Revolute.1
Revolute.2
Join.1
1- Exit the Wireframe and Surface Design workbench and enter the Part Design workbench.
2- Thick the surface Sweep.1 by 1.5 mm inwards.
3- Mirror the PartBody.
4- Close the surfaces Revolute.1, Revolute.2 and Join. 1.
Initial Part
Part used: Wrench_body_step5.CATPart
Copyright DASSAULT SYSTEMES 2002 55
Do It Yourself (2/2)
5- Sketch two rectangular contours on the XY plane and build four coincidences, two
between the contours and the V-axis of the Sketcher and two between the contours and
the corresponding horizontal edge of the head.
6- Remove the exceeding solid by pocketing (depth=20mm, Mirrored extent).
Sketch.6 (5-) Pocket (6-)