1. Wireframe and Surface Design
CATIA Training
Exercises
Wireframe and Surface Design
Version 5 Release 10 December 2002
EDU-CAT-E-WFS-FX-V5R10
Copyright DASSAULT SYSTEMES 2002

2. Table of Contents Master Exercise : Mobile Phone p. 3
Mobile Phone : Presentation p. 4
Mobile Phone : Creating the wireframe geometry p. 8
Mobile Phone : Creating the surfaces p. 12
Mobile Phone : Trimming and joining the body surfaces p. 17
Mobile Phone : Creating the part body p. 21
Mobile Phone : Modifying the geometry p. 24
Recap Exercise p. 26
Button (Step 1) : Creating the wireframe geometry p. 27
Button (Step 2) : Creating the surfaces p. 29
Button (Step 3): Creating the solid p. 31
Button (Step 4): Modifying the geometry p. 34
Wrench Body Exercise p. 36
Wrench body : Presentation p. 37
Wrench body : Creating the Surface of the Handle p. 41
Wrench body : Creating a Lofted Surface to Link the Parts p. 44
Wrench body : Creating the Side Surface of the Head p. 48
Wrench body : Creating a Connecting Surface p. 51
Wrench body : Completing the Wrench Body p. 53
Copyright DASSAULT SYSTEMES 2002

3. Master Exercise : Mobile Phone
Mobile 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. Exercise Mobile 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 phone1
Enter the Wireframe and Surface Design workbench
Create the wireframe geometry
Enter the Part Design workbench
Create the surfaces 2
Trim and join the body surfaces
Create the part body 3 4 5
Modify the geometry
Copyright DASSAULT SYSTEMES 2002

7. And now practice in the context of the Mobile phone1
Enter the Wireframe and Surface Design workbench
Create the wireframe geometry
Enter the Part Design workbench
Create the surfaces 2
Trim and join the body surfaces
Create the part body 3 4 5
Modify the geometry
Copyright DASSAULT SYSTEMES 2002

8. Mobile Phone : Creating the wireframe geometry
Exercise
Mobile Phone : Creating the wireframe geometry
10 min
Create the guide curves and profiles.
Copyright DASSAULT SYSTEMES 2002

9. Do It Yourself (1/2) Part used: Mobile_phone_step1-1.CATPart
Guide curve 1
Guide curve 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”:
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 phone1
Enter the Wireframe and Surface Design workbench
Create the wireframe geometry
Enter the Part Design workbench
Create the surfaces 2
Trim and join the body surfaces
Create the part body 3 4 5
Modify the geometry
Copyright DASSAULT SYSTEMES 2002

12. Mobile Phone : Creating the surfaces
Exercise
Mobile Phone : Creating the surfaces
10 min
Create swept, extruded, loft and blend surfaces.
Copyright DASSAULT SYSTEMES 2002

13. Do It Yourself (1/3) Part used: Mobile_phone_step2-1.CATPart
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”.
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 phone1
Enter the Wireframe and Surface Design workbench
Create the wireframe geometry
Enter the Part Design workbench
Create the surfaces 2
Trim and join the body surfaces
Create the part body 3 4 5
Modify the geometry
Copyright DASSAULT SYSTEMES 2002

17. Mobile Phone : Trimming and joining the body surfaces
Exercise
Mobile Phone : Trimming and joining the body surfaces
5 min
Join, Trim and Mirror the surfaces.
Copyright DASSAULT SYSTEMES 2002

18. Do It Yourself (1/2) Part used: Mobile_phone_step3-1.CATPart
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:
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 phone1
Enter the Wireframe and Surface Design workbench
Create the wireframe geometry
Enter the Part Design workbench
Create the surfaces 2
Trim and join the body surfaces
Create the part body 3 4 5
Modify the geometry
Copyright DASSAULT SYSTEMES 2002

21. Mobile Phone : Creating the part body
Exercise
Mobile Phone : Creating the part body
5 min
Close the body surface into a solid, then fillet the solid.
Copyright DASSAULT SYSTEMES 2002

22. Do It Yourself Part used: Mobile_phone_step4-1.CATPart
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 :
Copyright DASSAULT SYSTEMES 2002

23. And now practice in the context of the Mobile phone1
Enter the Wireframe and Surface Design workbench
Create the wireframe geometry
Enter the Part Design workbench
Create the surfaces 2
Trim and join the body surfaces
Create the part body 3 4 5
Modify the geometry
Copyright DASSAULT SYSTEMES 2002

24. Mobile Phone : Modifying the geometry
Exercise
Mobile Phone : Modifying the geometry
5 min
Modify the geometry by modifying a construction element.
Copyright DASSAULT SYSTEMES 2002

25. Do It Yourself Part used: Mobile_phone_step5-1.CATPart
You will modify the overall shape of the part by changing the parameters of a construction element.
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:
See that the wireframe modifications are impacting the body:
Copyright DASSAULT SYSTEMES 2002

26. Recap Exercise
In 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. Exercise Button (Step 1) : Creating the wireframe geometry
In this step you will:
Create the points
Create the profile curves
Create the direction lines
5 min.
In case you need several Do It Yourself screens (one per step of process) change the title to: Do It Yourself (1), Do It Yourself (2) ... Indicating the number of the step to which it refers
This screen can be used alone for simple practice in a skillet
Copyright DASSAULT SYSTEMES 2002

28. Do It Yourself Points, Spline, Line (1-, 2-, 3-)
Pt1
Pt2
Pt3
Pt4
Pt5
Spline.1
Line.1
Pt5
Pt1
Points, Spline, Line (1-, 2-, 3-)
Sketch on XY plane (4-)
Line on YZ plane (5-)
Button_step1.CATPart
In case you need several Do It Yourself screens (one per step of process) change the title to: Do It Yourself (1), Do It Yourself (2) ... Indicating the number of the step to which it refers
This screen can be used alone for simple practice in a skillet
Create the wireframe geometry:
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
Copyright DASSAULT SYSTEMES 2002

29. Exercise Button (Step 2) : Creating the surfaces
In this step you will:
Create extruded surfaces
5 min.
In case you need several Do It Yourself screens (one per step of process) change the title to: Do It Yourself (1), Do It Yourself (2) ... Indicating the number of the step to which it refers
This screen can be used alone for simple practice in a skillet
Copyright DASSAULT SYSTEMES 2002

30. Do It Yourself Surface Extrude. 1 (1-) Surface Extrude. 2 ( 2-)
Sketch.2
Line.1
Spline.1
Sketch.1
Surface Extrude. 1 (1-)
Surface Extrude. 2 ( 2-)
In case you need several Do It Yourself screens (one per step of process) change the title to: Do It Yourself (1), Do It Yourself (2) ... Indicating the number of the step to which it refers
This screen can be used alone for simple practice in a skillet
Button_step2-3.CATPart
Create the basic surfaces:
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
Copyright DASSAULT SYSTEMES 2002

31. Exercise Button (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.
- Donner des procès généraux quand cela est possible pour illustrer
- What , How, Why ne sont pas obligatoires mais doivent guider et aider dans la rédaction du foils.
Forme
- ATENTION de na pas modifier la taille du cadre intérieur de la diapo qui est dimensionne pour pouvoir imprimer en format Américain aussi bien que Européen
- Essayer de respecter la palette de couleurs proposée
- Ne pas oublier de mettre a jour le titre du cours dans le masque
- Chaque mot du titre doit commencer par une majuscule
Style:
Utiliser You... A la place des phrases impersonnelles
Utiliser la voix active plutot que passive
Ecrire des phrases simples: Souvenez vous que ce document peut etre traduit en d’autres langues et donc nous devons eviter toutes ambiguites.
Copyright DASSAULT SYSTEMES 2002

32. Do It Yourself (1/2) Sketch.3 on XY plane (1-) Sketch.4 YZ plane (2-)
- Donner des procès généraux quand cela est possible pour illustrer
- What , How, Why ne sont pas obligatoires mais doivent guider et aider dans la rédaction du foils.
Forme
- ATENTION de na pas modifier la taille du cadre intérieur de la diapo qui est dimensionne pour pouvoir imprimer en format Américain aussi bien que Européen
- Essayer de respecter la palette de couleurs proposée
- Ne pas oublier de mettre a jour le titre du cours dans le masque
- Chaque mot du titre doit commencer par une majuscule
Style:
Utiliser You... A la place des phrases impersonnelles
Utiliser la voix active plutot que passive
Ecrire des phrases simples: Souvenez vous que ce document peut etre traduit en d’autres langues et donc nous devons eviter toutes ambiguites.
Sketch.3 on XY plane (1-)
Sketch.4 YZ plane (2-)
Button_step4.CATPart
1- Create a sketch (rectangular contour) on the XY plane
2- Create a sketch (trapezoidal contour) on the YZ plane
Copyright DASSAULT SYSTEMES 2002

33. Do It Yourself (2/2) Pad up to surface (3-) Split of pad (4-)
Fillets (6-)
Shell (7-)
- Donner des procès généraux quand cela est possible pour illustrer
- What , How, Why ne sont pas obligatoires mais doivent guider et aider dans la rédaction du foils.
Forme
- ATENTION de na pas modifier la taille du cadre intérieur de la diapo qui est dimensionne pour pouvoir imprimer en format Américain aussi bien que Européen
- Essayer de respecter la palette de couleurs proposée
- Ne pas oublier de mettre a jour le titre du cours dans le masque
- Chaque mot du titre doit commencer par une majuscule
Style:
Utiliser You... A la place des phrases impersonnelles
Utiliser la voix active plutot que passive
Ecrire des phrases simples: Souvenez vous que ce document peut etre traduit en d’autres langues et donc nous devons eviter toutes ambiguites.
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)
Copyright DASSAULT SYSTEMES 2002

34. Exercise Button (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.
- Donner des procès généraux quand cela est possible pour illustrer
- What , How, Why ne sont pas obligatoires mais doivent guider et aider dans la rédaction du foils.
Forme
- ATENTION de na pas modifier la taille du cadre intérieur de la diapo qui est dimensionne pour pouvoir imprimer en format Américain aussi bien que Européen
- Essayer de respecter la palette de couleurs proposée
- Ne pas oublier de mettre a jour le titre du cours dans le masque
- Chaque mot du titre doit commencer par une majuscule
Style:
Utiliser You... A la place des phrases impersonnelles
Utiliser la voix active plutot que passive
Ecrire des phrases simples: Souvenez vous que ce document peut etre traduit en d’autres langues et donc nous devons eviter toutes ambiguites.
Copyright DASSAULT SYSTEMES 2002

35. Do It Yourself Point on spline (1-) Sketch.1 (2-) Button_step5.CATPart
Pt3
Point on spline (1-)
Sketch.1 (2-)
- Donner des procès généraux quand cela est possible pour illustrer
- What , How, Why ne sont pas obligatoires mais doivent guider et aider dans la rédaction du foils.
Forme
- ATENTION de na pas modifier la taille du cadre intérieur de la diapo qui est dimensionne pour pouvoir imprimer en format Américain aussi bien que Européen
- Essayer de respecter la palette de couleurs proposée
- Ne pas oublier de mettre a jour le titre du cours dans le masque
- Chaque mot du titre doit commencer par une majuscule
Style:
Utiliser You... A la place des phrases impersonnelles
Utiliser la voix active plutot que passive
Ecrire des phrases simples: Souvenez vous que ce document peut etre traduit en d’autres langues et donc nous devons eviter toutes ambiguites.
Button_step5.CATPart
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
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. Exercise Wrench 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 Body1
Enter the Wireframe and Surface Design workbench
Create the surface of the handle 4
Create a connecting surface
Create a lofted surface to link the parts 2
Create the side surface of the head
Enter the Part Design workbench 3 5
Complete the wrench body
Copyright DASSAULT SYSTEMES 2002

40. And now practice in the context of the Wrench Body1
Enter the Wireframe and Surface Design workbench
Create the surface of the handle 4
Create a connecting surface
Create a lofted surface to link the parts 2
Create the side surface of the head
Enter the Part Design workbench 3 5
Complete the wrench body
Copyright DASSAULT SYSTEMES 2002

41. Wrench body : Creating the Surface of the Handle
Exercise
Wrench body : Creating the Surface of the Handle
5 min
Create the surface of the handle by revolving a spline defined in 3D.
Copyright DASSAULT SYSTEMES 2002

42. Do It Yourself Part used: Wrench_body_step1.CATPart
Vertex 2
Vertex 1 A C B
Spline 1
Points, Spline (1-, 2-, 3-)
Revolving surface (4-)
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).
Copyright DASSAULT SYSTEMES 2002

43. And now practice in the context of the Wrench Body1
Enter the Wireframe and Surface Design workbench
Create the surface of the handle 4
Create a connecting surface
Create a lofted surface to link the parts 2
Create the side surface of the head
Enter the Part Design workbench 3 5
Complete the wrench body
Copyright DASSAULT SYSTEMES 2002

44. Wrench body : Creating a Lofted Surface to Link the Parts
Exercise
Wrench body : Creating a Lofted Surface to Link the Parts
10 min
Create a lofted surface to associate the head with the link.
Copyright DASSAULT SYSTEMES 2002

45. Do It Yourself (1/2) Part used: Wrench_body_step2.CATPart
Head bottom face
Link end face
Sketch.4
Offset plane
Sketch.5
Middle points
Plane and Sketch.4
Sketch.5
Middle points
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.
Copyright DASSAULT SYSTEMES 2002

46. Do It Yourself (2/2) Splines (5) Lofted surface (6,7)
Symmetry and join (8-, 9-)
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.
Copyright DASSAULT SYSTEMES 2002

47. And now practice in the context of the Wrench Body1
Enter the Wireframe and Surface Design workbench
Create the surface of the handle 4
Create a connecting surface
Create a lofted surface to link the parts 2
Create the side surface of the head
Enter the Part Design workbench 3 5
Complete the wrench body
Copyright DASSAULT SYSTEMES 2002

48. Wrench body : Creating the Side Surface of the Head
Exercise
Wrench body : Creating the Side Surface of the Head
10 min
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.
Copyright DASSAULT SYSTEMES 2002

49. Do It Yourself Part used: Wrench_body_step3.CATPart
Side face of the head
Split of Sketch.5
Extracted edges
Side surface
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).
Copyright DASSAULT SYSTEMES 2002

50. And now practice in the context of the Wrench Body1
Enter the Wireframe and Surface Design workbench
Create the surface of the handle 4
Create a connecting surface
Create a lofted surface to link the parts 2
Create the side surface of the head
Enter the Part Design workbench 3 5
Complete the wrench body
Copyright DASSAULT SYSTEMES 2002

51. Wrench body : Creating a Connecting Surface
Exercise
Wrench body : Creating a Connecting Surface
5 min
Create a connect surface at a junction by sketching the profile and revolving it.
Copyright DASSAULT SYSTEMES 2002

52. Do It Yourself Part used: Wrench_body_step4.CATPart Sketch.5 (1-)
Surface of revolution (2-)
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).
Copyright DASSAULT SYSTEMES 2002

53. Wrench body : Completing the Wrench Body
Exercise
Wrench body : Completing the Wrench Body
5 min
Create solids by extruding and closing the surfaces. Remove the exceeding solid by pocketing.
Copyright DASSAULT SYSTEMES 2002

54. Do It Yourself (1/2) Part used: Wrench_body_step5.CATPart 1
Join.1
Revolute.1 1
Revolute.2
PartBody
Sweep.1
Initial Part
Thick / Mirror / Close (2-, 3-, 4-)
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.
Copyright DASSAULT SYSTEMES 2002

55. Do It Yourself (2/2) Sketch.6 (5-) Pocket (6-)
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).
Copyright DASSAULT SYSTEMES 2002