Tutorial: Flange with Equations

1. Tutorial: Flange with Equations Chapter 4

2. Feature 1 – Extruded Circle INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

3. Feature 2 – Construction Plane INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

4. Feature 3 – Extruded Boss (Drafted) INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

5. Feature 4 – Extruded Cut (Drafted) INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

6. Feature 5 - Fillets INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

7. Feature 6 - Fillet • Different radius than previous fillets, so added as a separate step INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

8. Feature 7 - Rib INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

9. Feature 7 (cont.) • To create this sketch, the silhouettes of the fillets as they intersect the sketch plane are converted into arcs in the sketch INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

10. Feature 7 (cont.) • A line is added that is tangent to both arcs INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

11. Feature 7 (cont.) • Excess portions of the arcs are trimmed away INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

12. Feature 7 (cont.) • Lines are added to close the sketch INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

13. Feature 8 – Revolved Cut • Because the top of the rib is flat (created by extrusion), it matches the contour of the fillet only at the mid-plane of the rib • The mismatch between the two features needs to be removed INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

14. Feature 8 (cont.) • Rather than creating a new sketch, the sketch used to create the rib can be re-used and edited INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

15. Feature 8 (cont.) INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009 The revolved cut allows the rib and fillet to intersect smoothly

16. Feature 8 (cont.) INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009 Note that the shared sketch is indicated by the hand under the sketch icon

17. Feature 9 - Draft • Since the direction of the draft is not the same as the extrusion direction of the rib, the draft is added as a separate feature INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

18. Feature 10 – Circular Pattern of Ribs INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009 Note that the draft is patterned as well

19. Features 11, 12 – Extruded Cut (Hole) and Circular Pattern INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

20. Renaming Features • Renaming features will be helpful before adding equations INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

21. Equation 1 • Number of holes = number of ribs • Number of holes is the independent parameter • Number of ribs is the dependent parameter INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

22. Equation 1 (cont.) • Changing number of ribs causes number of holes to change • Second equation is needed to place holes between ribs INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

23. Equation 2 • Degrees between ribs = 360/(# Ribs) • Angular position of first hole is one-half of angle between ribs = ½*(360/(# Ribs)) = 180/(# Ribs) INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009

24. Equation 2 (cont.) • Changing number of ribs now changes number of holes and places holes between ribs INTRODUCTION TO SOLID MODELING USING SOLIDWORKS 2009