Complex Surface Modeling

Transcription

1 Inventor 11 TUTORIAL 6 Complex Surface Modeling Learning Objectives After completing this tutorial, you will be able to: Construct and use surface features in solid modeling Incorporate surface features in part design when appropriate Construct Swept and Lofted surfaces Derive sketches Required Competencies Before starting this tutorial, you should have been able to: Construct, constraint and dimension sketches Project geometry on sketch planes Extrude sketched profiles Revolve sketched profiles Loft sketched profiles Understand the concepts of work and placed features Understand how to manipulate the history tree in the browser Figure 1: Toy Car Body Tutorial 6 Surface Modeling 1

2 1. Open the file Car Body.ipt. Pull down the EOP marker to reveal the sketches for this tutorial. Looks quite complex, but when we analyze the sketches one by one it is a much simpler problem. Figure 2 2. Pull the EOP marker up leaving only the Front and Front_sweep Path Sketches visible. Sweep the Front sketch along the Path sketch. Figure 3 2 Surface Modeling

3 3. Pull the EOP marker down revealing the Back and Back_sweep Path Sketches. Sweep the Back sketch along the Path sketch. Figure 4 4. Pull the EOP marker down revealing the Left_side and Left_side_sweep Path Sketches. Sweep the Left side sketch along the Path sketch. Figure 5 Tutorial 6 Surface Modeling 3

4 5. Mirror the side surface. Figure 6 6. Pull the EOP marker down revealing the Grill Spline, Front Quarterpanel, Rear Quarterpanel, and Tail Spline sketches. Loft a surface across the sketches. Figure 7 4 Surface Modeling

5 7. Make the xy plane visible. Figure 8 8. Start the Sculpt command and select the xy plane and all of the surfaces. Figure 9 Tutorial 6 Surface Modeling 5

6 9. Start the Fillet command and select Face Fillet. Select the front edges and set the fillet to Smooth(G2).. Figure Fillet the top and back edges with tangent fillets. (I would like to use G2 continuity but it gives an error in this case.) Figure 11 6 Surface Modeling

7 11. Pull the EOP marker down revealing the Canopy and Canopy_sweep Sketches. Sweep the Canopy and change the color property. Figure Add a 6mm tangent fillet to the intersecting loop between the body and the canopy. Figure 13 Tutorial 6 Surface Modeling 7

8 13. Start a new sketch on the xy plane and sketch the rectangle shown. Figure Make the Wheel Wells Sketch visible and Extrude cut mid plane through all. Figure 15 8 Surface Modeling

9 15. Make the Mounting Posts sketch visible and Extrude To Next the two circles with a Taper of 3. Figure Mirror the mounting posts. Figure 17 Tutorial 6 Surface Modeling 9

10 17. Make the Wheel Wells sketch visible again and set the sketch to Shared. Save the file. Figure Start a new Standard(mm).ipt file and Derive the Car Body as Solid Body and the Wheel Wells sketch. Figure Surface Modeling

11 19. Extrude the Wheel Wells circles 30mm mid plane. Figure Start a new Sketch on the xy plane and project the edges of the extruded cylinders on both sides. Figure 21 Tutorial 6 Surface Modeling 11

12 21. Create a rectangle and add co linear constraints and two dimensions as shown. Figure Extrude the rectangle a distance of 100mm. Figure Surface Modeling

13 23. Delete Face with the Lump or Void option the internal void. Save the file with the name Car Body Toolbody.ipt. Figure Start a new Standard(mm).ipt file and Derive the Car Body Toolbody as a Body as Work Surfaces. Figure 25 Tutorial 6 Surface Modeling 13

14 25. Start a new sketch on the xy plane and Project Geometry two diagonal corners. Figure Create a rectangle constrained to the two diagonal points and Extrude the rectangle a distance of 150mm. Figure Surface Modeling

15 27. Split the derived work surface from the part and save the file with the name Car Body Mold Cavity. Figure Create a new Standard(mm).ipt file and Derive the Car Body Toolbody as Solid Body. Figure 29 Tutorial 6 Surface Modeling 15

16 29. Derive the Car Body as Body as Work Surfaces. Figure Split the Work Surface from the part and save the file with the name Car Body Mold Core. Figure Surface Modeling

17 by Kyle Brand In this tutorial we learned how to break a complex model into manageable steps. With time and effort some impressive work can be accomplished. Tutorial 6 Surface Modeling 17