Inventor 11 tutorial 5

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


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


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


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


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).


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.

Documents

Inventor 11 tutorial 5