Inventor 11 TUTORIAL 9
Simplified 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 • Simplify modeling techniques • Use Face Fillet 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: Test Instrument Body
Tutorial 9
Surface Modeling
1 Copyright 2006 JD Mather
1. Open the file named Test Instrument Body.ipt. Pull down the EOP marker to reveal Sketch1. Extrude Sketch1 a distance of 30mm midplane.
Figure 2
2. Pull the EOP marker down to reveal Sketch2 & 3 and Loft a surface as shown..
Figure 3
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Surface Modeling
3. Share and/or make Sketch2 & 3 visible and loft a surface again as shown.
Figure 4
4. Split the part with the surfaces. Splitting the part works but the side faces had to be trimmed and the top face replaced. Delete the Extruded solid and we will try a different method. (Make sure to uncheck deleting the consumed sketch.) Also delete the Split Features.
Figure 5 Tutorial 9
Surface Modeling
3 Copyright 2006 JD Mather
5. Extrude to the upper lofted surface.
Figure 6
6. Start the Face Draft command and select the xy‐plane for the Pull Direction and then click the lower edge of the face shown to Draft 5°..
Figure 7
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Surface Modeling
7. Extrude Sketch1 to the lower lofted surface.
Figure 8
8. Start the Face Draft and draft the lower side (be sure to flip the Pull Direction.
Figure 9
Tutorial 9
Surface Modeling
5 Copyright 2006 JD Mather
9. Make Sketch4 visible and use the sketch to Split the top surface.
Figure 10
10. Make Sketch5 visible.
Figure 11
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Surface Modeling
11. Create a workplane selecting the point indicated first, then the point at the other end of the small arc, and finally the point at the end of the projected center arc above the part.
Figure 12
12. Start a new sketch on the plane and then project the three points.
Figure 13
Tutorial 9
Surface Modeling
7 Copyright 2006 JD Mather
13. Create a circle with the center somewhere between the points and the edge coincident with one of the points.
Figure 14
14. Add coincident constraints between the circle and the other two points.
Figure 15
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Surface Modeling
15. Create a horizontal line across the circle. (Unshade the part first..)
Figure 16
16. Add a coincident constraint between the line and the center of the circle and trim away the bottom of the circle.
Figure 17
Tutorial 9
Surface Modeling
9 Copyright 2006 JD Mather
17. Sweep the sketch as shown.
Figure 18
18. Share the sketch and Revolve 90deg as shown.
Figure 19
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19. Mirror the Revolved feature to the other side.
Figure 206
20. Start the Fillet command and select the horseshoe shape as Face Set 1 and then the top face of the part. Set the Radius to 0.5mm.
Figure 21
Tutorial 9
Surface Modeling
11 Copyright 2006 JD Mather
21. Start a new Standard(mm).ipt file and Derive the Test Instrument Body as a Solid Body.
Figure 22
22. Split the Part with the xy‐plane and Save Copy As the file name Test Instrument Bottom.ipt.
Figure 23
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Surface Modeling
23. Flip the Split direction (you did save the file as a copy didn’t you). Save the file with the name Test Instrument Top.ipt.
Figure 24
In this tutorial we learned how to simplify the modeling technique and use the Face Fillet command..
Tutorial 9
Surface Modeling
13 Copyright 2006 JD Mather