Tutorial 2: Extrusions, Sketching and Cuts

1. Introduction

Extrusions are one of the most basic ways to design a part in Pro/E where they can be used for creating solids and

for making cuts as well. Sketching is an essential component of the design process in Pro/E where every solid

feature starts with a 2D sketch. In this tutorial, you will learn the basics of solid modeling by creating a simple part

using an extrusion. You will then modify the part using a cutting operation. Finally you will personalize the part by adding an extruded text.

2. Creating New Extruded Part

1. Start Pro/E.

2. Choose [File] -> [Set Working Directory…], and select a folder to save your work in.

3. Choose [File] -> [New] (or use the New icon from the File Management toolbar) to create a new file.

A pop-up window will appear as shown in Figure 2.1.

[Figure 2.1]

4. Make sure that the new file Type is Part and the Sub-type is Solid (this is the default file type).

5. Type in Tutorial2 in the Name field then click [Ok]. The new part file will start and the Pro/E main window

should look similar to that shown in Figure 2.2.

[Figure 2.2]

Note that when you start any new part you will have the part coordinate system and three datum planes

(named as RIGHT, TOP & FRONT representing the y-z, z-x and x-y planes) already available. The

coordinate system and the datum planes can be seen in the modeling area and also they are listed in the

model tree as indicated in the above figure. The datum planes are essential for creating any solid feature

where you will choose one of them to draw your sketch.

6. Start a new extrusion by pressing the Extrude icon from the Feature Creation Toolbar as indicated

in Figure 2.2 (or by choosing [Insert] -> [Extrude] from the Menu Bar). The new extrusion will start and

the extrusion options will be displayed in the Dashboard at the bottom of the Pro/E main window as seen in

Figure 2.3.

[Figure 2.3]

7. From the Dashboard at the bottom of the screen click on the Placement button then the Define

button (as indicated in Figure 2.3). The sketch pop-up window will

appear as shown in Figure 2.4.

[Figure 2.4]

8. Select the plane labeled as FRONT from the background by moving the mouse over the plane until it is

highlighted in blue then clicking it with the left mouse button (you can also select the plane from the Model

Tree) then click the Sketch button in the pop-up window. Pro/E will switch to the Sketching

mode and the References pop-up will appear as shown in Figure 2.5.

[Figure 2.5]

9. Click the button to close the References Dialog Box.

Now Pro/E is in the Sketching Mode and the Sketcher Toolbar is displayed at the right side of the screen.

Figure 2.6 shows the different icons in the Sketcher Toolbar and their functions.

[Figure 2.6]

Sketching

Pro/E is based on the solid modeling concept. An extrusion for instance is a solid that is produced by moving a

planar area along its normal direction. When making an extrusion we start by sketching the cross sectional

shape which must form a closed loop (such that a solid feature is generated by moving this shape). Now we will

start by sketching the shape shown in Figure 2.7.

10. Select the Line icon from the Sketcher Toolbar. Click the left mouse button to create point 1 then

continue the sketch by clicking the left mouse button again on point 2, (make sure that (V) appears next

to the line before you click point 2 to make sure that the line is vertical), click again on points 3, 4 and 5,

and click on point 1 again to close the shape.

11. Click the Select Item icon to stop the line command (or you can click the middle mouse button to

stop the line command). Your sketch should look similar to that shown in Figure 2.7 where the dimensions

appear automatically but the values of your dimensions will be different than those seen in the figure.

[Figure 2.7]

Modifying and Adding Dimensions

Now we will change the values of the dimensions designated with letters A, B and C, and add a new dimension

to the line designated by D as indicated in Figure 2.7.

12. Double click on dimension A, and type 200 in the textbox then hit ENTER, the dimension will be

changed to 200.

13. Repeat the same thing for dimensions B and change it to 400.

14. Now we will change dimension C but we will use a different method, click the Modify Dimension

icon then click on dimension C. The Modify Dimensions window will pop-up as shown in Figure

2.8. From that window you can move the wheel left or right using the mouse (by pressing and

holding the left mouse button while moving the cursor over the wheel) to change the dimension

value or you can type in the desired value directly in the text field. Change the dimension to 200

then press the Check button to save the change and close the window.

[Figure 2.8]

15. Now to add a new dimension to line D, choose the Create Defining Dimensions icon. Click on

point 4 and point 3 then click the middle mouse button somewhere close to the middle of the line.

Click [OK] in the pop-up window that appears. The new dimension will appear along the length of

the line. You can create this same dimension by clicking on the line itself, instead of clicking the two

end points, and then click the middle mouse button somewhere close to the middle of the line. If you

want to try that you need to press the undo icon first to remove the dimension you already

added and then add the new dimension. 16. Double click on the new dimension you just added and change its value to 300 then hit ENTER.

Adding Constraints

Now we will force the two vertical lines to have the same length by adding an equal length constraint such that

if we change the length of one of them the other will change equally.

17. Click the Constraints icon. The constraints pop-up window shown in Figure 2.9 will appear

where the different icons indicate different types of constraints.

[Figure 2.9]

18. Click the Create Equal Length icon and select the two vertical lines then click [OK] in the

new pop-up window. Now the length of the two lines will be made equal and the constraint indicators

labeled as L1 will appear next to the two lines as seen in Figure 2.10.

19. Click the button to close the Constraints window.

[Figure 2.10]

Completing the Sketch

Once your sketch is complete and you have adjusted all dimensions to the desired values, you will need to exit

from the sketcher mode to proceed with the extrusion.

20. Now the sketch is complete, so you need to press the Complete icon in the Sketcher Toolbar to

exit the sketching mode. If there are any errors in the sketch (such as if your sketch is not a closed loop) you will get an error message and will not be able to exit the sketcher until you fix the error.

Extrusion Options

You are now out of the Sketcher and back to the Extrude command as seen in Figure 2.11. The different

options available under the extrusion command (such as extrusion depth and direction) are available in the

Dashboard at the bottom of the screen. For now, we are just going to change the depth of the extrusion.

21. Type in 400 into the Extrusion Depth box in the dashboard and hit Enter.

22. Click the check button to complete the extrusion.

[Figure 2.11]

23. Click on the Saved view list icon, the list of saved views will open as shown in Figure 2.12,

form the list choose Standard Orientation. If you followed the instructions correctly, your extruded solid should look similar to that shown in Figure 2.13.

[Figure 2.12]

[Figure 2.13]

24. Select [File] -> [Save] from Menu Bar then click [Ok] to save the part.

Note on Saving: Do not try to save your work while you are in the Sketching Mode or if you have not

completed the command that you have started yet. Such attempts will not save the solid feature but instead

they will lead to unwanted files to be saved (such as 2D sketches) or the Save command will not be activate.

3. Creating Extruded Cuts

Extrusions are used for creating solids, but also they can be used for making cuts as well. Cuts (and extrusions

in general) can be created one at a time or several cuts can be created together as long as they have the same

depth and direction.

Single Cut

1. Select the Extrude icon from the Feature Creation Toolbar on the right of the screen.

2. Select the Remove Material icon from the Dashboard, as shown in Figure 2.14.

[Figure 2.14]

3. Select the Placement button then the Define button.

The Sketch pop-up window will appear where you need to choose the surface to draw your sketch

on.

4. Choose the side surface designated by the letter A (as shown in Figure 2.15) by moving the mouse

to that surface until it is highlighted in blue then clicking the left mouse button to select the surface

as seen in Figure 2.15.

5. In the Sketch pop-up window, make sure that the Orientation is [Right], if the orientation is different click on the arrow to open the dropdown list then choose [Right].

[Figure 2.15]

6. Click the Sketch button to switch to the sketcher mode.

7. Click the button to close the References Dialog Box.

8. Select [Line] from the Sketcher Toolbar. Draw the sketch shown in Figure 2.16 by clicking the

left mouse button to create point 1 then continue the sketch by clicking the left mouse button

again on point 2, click again on points 3, and finish at point 4 then click the middle mouse button.

Notice that the rectangle is not fully closed. However, the reference line on the bottom acts as a

fourth side and completes the rectangle.

9. Change the dimensions of the sketch to be as shown in Figure 2.16.

[Figure 2.16]

10. Use the left mouse button to select the Horizontal line connecting points 2 and 3 then hit Delete

on the keyboard to delete that line.

11. Select Arc icon (tangent to end point) from the Sketcher Toolbar and click on point B then point

C (shown in Figure 2.17) with the left mouse button, after clicking the two points when you move

the mouse cursor up and down you will see that the location of the center of the arc will move also.

Move the cursor until the arc ends become tangent to the two lines (the letter T will appear near the

ends when they are tangent) then click the Left mouse button to finish the arc. Make sure that letter T is shown next to the two ends as shown in Figure 2.17.

[Figure 2.17]

12. Click the Complete button to finish the sketch.

13. Click on Saved view list icon; choose [Standard Orientation]. Now your part should look

similar to that shown in Figure 2.18.

Make sure that the two yellow arrows (which define the direction of the material to be removed) are pointed in

the same directions shown in Figure 2.18. If for any reason any of the arrows is pointing in the wrong direction

click on the yellow cutting direction arrow to flip its direction. Try clicking on the arrows anyway and see

how that changes the direction of the cut.

[Figure 2.18]

14. From the Dashboard click the arrow next to the depth icon to open the depth options list (as seen in

Figure 2.19), then from the list select the Through all icon.

[Figure 2.19]

15. Click the check button to complete the extrusion. If you have done everything correctly then your part should look similar to that shown in Figure 2.20.

[Figure 2.20]

16. Select [File] -> [Save] from the Menu Bar then click [Ok] to save the part.

Several Cuts in One Step

Now we will create another two cuts having the same depth.

1. Select the Extrude icon from the Feature Creation Toolbar on the right of the screen.

2. Select the Remove Material icon from the Dashboard.

3. Select the Placement button then the Define button.

The Sketch pop-up window will appear as seen in Figure 2.21.

[Figure 2.21]

4. Select the side surface (as shown in Figure 2.21) to be the sketching surface. 5. Make sure that the Orientation is [Right], if the orientation is different click on the arrow to open

the dropdown list then choose [Right].

6. Click the Sketch button to switch to the sketcher mode.

7. Click the button to close the References Dialog Box.

Now we will sketch the shape shown in Figure 2.22.

[Figure 2.22]

8. Select the circle icon and click on point A with the left mouse button then move the cursor

and click the left mouse button again to finish the circle. Click the middle mouse button to end

the circle command then change the dimensions to be as shown in Figure 2.22.

9. Select the rectangular icon and click on point B then point C with the left mouse button to

create the rectangle. Click the middle mouse button to end the rectangle command then change

the dimensions to be as shown in Figure 2.22.

10. Click the Complete button to finish the sketch.

11. Click on the Saved view list icon; choose [Standard Orientation]. If necessary change the

direction of the cut to be in the appropriate direction (as seen in Figure 2.23) by clicking on the

yellow arrows.

[Figure 2.23]

12. Type 200 into the Extrusion Depth box and hit Enter.

13. Click the check button to finish the extrusion. If you have done everything correctly then your part should look similar to that shown in Figure 2.24.

[Figure 2.24]

14. Select [File] -> [Save] from the Menu Bar then click [Ok] to save the part.

4. Creating Extruded Text

Extrusions can also be used for adding text to existing parts whether as an extruded solid or as a cut. In this

section we will personalize the part by adding extruded text. We will also see how to add sketcher references.

1. To make it easier to view the part, change the view mode to wireframe with no hidden lines by

selecting the No Hidden icon from the Model Display Toolbar. You will see the model as in

Figure 2.25.

[Figure 2.25]

2. Start a new extrusion by selecting the Extrude icon from the Feature Creation Toolbar.

3. Select the Placement button then the Define button

from the Dashboard. The Sketch pop-up window will appear.

4. Select the inclined surface designated by the letter A (shown above in Figure 2.25) to be the

sketching surface where the text will be added. Make sure that the Orientation [Right] is selected

then press the Sketch button to switch to the Sketching Mode.

5. Now the References pop-up window will open (do not close it).

Adding Sketcher References

Notice that this time the references list it is empty (as seen in Figure 2.26) and there are no references. Usually

two references are selected automatically, however this time no references were selected because the

sketching surface is not parallel to any of the original datum planes. So, in such case you need to select the

references manually and at least two references need to be selected. References are necessary to determine

the location of anything you sketch.

6. Click on the FRONT datum plane to select it as your first reference. Notice that when a reference is

selected it will be shown using a dashed line and its name will be added in the References dialog box.

7. The lower edge of the roof (as shown in Figure 2.26) will be selected as the second reference,

however it can not be selected with the current type of Filter. Click on the arrow next to the Filter

type and select Edge from the drop list then select the lower edge of the roof as your second

reference.

8. Click the [Close] button to close the References pop-up window.

[Figure 2.26]

9. Click on the Text icon from the Sketcher Toolbar. To create a text it is first required to specify

the location where the text will be added. To specify the location, first click at point A then at point B

as indicated in Figure 2.27 (a dashed line will be created between the two points where this line

specifies the location and size of the text). The Text pop-up window will appear.

[Figure 2.27]

10. In the textbox type in HU, and press [OK] then click the middle mouse button to finish. You

should see the text as shown in Figure 2.28.

11. Change dimensions A, B, and C to 75, 150 and 325, respectively.

[Figure 2.28]

12. Click the Complete button to finish the sketch.

13. Type in 25 into the Extrusion Depth box in the dashboard and hit Enter.

14. Click the check button to finish the extrusion.

15. Click on the Saved view list icon; choose Standard Orientation.

16. Change the part back to a solid view by clicking the Shading icon from the Model Display

Toolbar.

17. From the Datum Display Toolbar click the Datum plane on/off , the Datum axis on/off

and the Coordinate system on/off to hide them in order to have a better display of the part. If you followed the instructions correctly, your part should look similar to that shown in Figure 2.29.

[Figure 2.29]

18. Select [File] -> [Save] from Menu Bar then click [Ok] to save the part.

This completes Tutorial 2.

Homework

Estimate appropriate dimensions for the part shown below then create it. Add your student ID

number to the surface as shown.