Tutorial 5 Surface Modeling 1 Copyright 2006 JD Mather
Inventor 11 TUTORIAL 5
Derived Work Surfaces 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
Create Drafted Ribs
Use Derived Work Surfaces
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: Ice Cube Tray
2 Surface Modeling
1. Start a new Standard(in).ipt and sketch Figure 2.
Figure 2
2. Extrude the sketch down a distance of .85in with a taper of -6°.
Figure 3
Tutorial 5 Surface Modeling 3 Copyright 2006 JD Mather
3. Shell the part with a thickness of .0625 removing the top face as shown.
Figure 4
4. Create a workplane -.125 from the top of the part and start a new sketch on the
plane. (Tip: You can simultaneously create a workplane and start a sketch by starting the
sketch command and click and drag from a planar face.)
Figure 5
4 Surface Modeling
5. Project the inside straight edges and draw a line from midpoint to midpoint
across the long length. Create a point at the beginning of the line.
Figure 6
6. Make Sketch1 visible and start the Rectangular Pattern command. Select the point as
the Geometry to pattern and select the line for the direction. Set the number of
copies to 7 and the distance to be a function of the length distance/7.
Figure 7
Tutorial 5 Surface Modeling 5 Copyright 2006 JD Mather
7. Create a perpendicular line near the second point and then offset near each of the
other inside points. Place coincident constraints with the points and lines.
Figure 8
8. Start the Rib command and select the long line and 6 perpendicular lines. Set the
direction to down with a Taper of 6°. Uncheck Extend Profile as it is not needed
with our sketch.
Figure 9
6 Surface Modeling
9. Fillet the inside edges Radius .0625 by selecting Feature – Rib and the All Fillets
checkbox.
Figure 10
10. Turn the part over and Shell to a thickness of .02 removing the outside faces.
Figure 11
Tutorial 5 Surface Modeling 7 Copyright 2006 JD Mather
11. Save the file with the name Ice Cube Tray.ipt.
Figure 12
12. Start a new Standard(in).ipt and Derive the Ice Cube Tray as a Solid Body.
Figure 13
8 Surface Modeling
13. Start a new sketch on the xy-plane and sketch the rectangle shown.
Figure 14
14. Extrude the rectangle 1 inch. Save the file with the name Ice Cube Tray
Toolbody.ipt.
Figure 15
Tutorial 5 Surface Modeling 9 Copyright 2006 JD Mather
15. Start the Delete Face command and select the Lump or Void option. Then select the
internal void by pausing over the part and then use the select other tool. Save the
file.
Figure 16
16. Start a new Standard(in).ipt file and Derive the Ice Cube Tray Toolbody file as Body
as Work Surface.
Figure 17
10 Surface Modeling
17. Start a new sketch on the xy-plane and project the outside edges of the derived
surfaces.
Figure 18
18. Extrude the sketch 1.875in.
Figure 19
Then start the Sculpt command and be sure to change to Remove. Select the derived worksurface to remove (you might need to flip the direction).
Tutorial 5 Surface Modeling 11 Copyright 2006 JD Mather
19. Save the file with the name Ice Cube Tray Cavity.ipt.
Figure 20
20. Start a new Standard(in).ipt file and Derive the Ice Cube Tray Toolbody file as Solid
Body.
Figure 21
12 Surface Modeling
21. Derive the Ice Cube Tray as Body as Work Surface.
Figure 22
22. Split the Work Surface from the part and save the file with the name Ice Cube Tray
Core.
Figure 23
In this tutorial we learned how to use Derived Work Surfaces to create associative
geometry between parts. This technique could be used in the creation of core/cavity
molds. Of course there is much more to mold design than the information covered in
this tutorial.
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