TUTORIAL
MODELING A SPUR GEAR

This tutorial exercise provides step by step instruction on creating a spur gear. Follow the steps shown below.

1) Open CATIA by double clicking the Icon which would be in your desktop if you are using Windows and believe it to be the same for UNIX also. The screen would be as in Figure 1.


Figure 1.

2) Click File menu from top of your screen and click new file option from the menu list as shown in Figure 2.


Figure 2.

3) Then a small dialogue box appears as shown in Figure 3. Select part from the list and click OK. Then a default part with name part1 is opened.


Figure 3.

4) Select “yz plane” from specification tree as shown in Figure 4.


Figure 4.

5) Select “Sketcher” workbench by clicking the icon as shown in Figure 5.


Figure 5.

6) Now let us select “Circle” tool by clicking the icon as shown in Figure 6 or select from Insert>Profile>Circle>Circle menu Figure 7.


Figure 6.


Figure 7.

7) Draw a circle as shown Figure 8.


Figure 8.

8) Now select “Constraint” tool by clicking the icon in the tool bar as shown in Figure 9.


Figure 9.

9) Now just click on the circle and the diameter of the circle would be displayed as shown in Figure 10 . When you double click on the diameter value “Constraint Definition” dialogue box appears where you can see present diameter value as shown in Figure 11. Now let us change the value of diameter to 100mm and click ok, as shown in Figure 12.


Figure 10.


Figure 11.


Figure 12.
10) Exit sketcher workbench by clicking the icon in toolbar as shown in Figure 13.


Figure 13.

11) Select “Pad” tool by clicking the icon in the toolbar as shown in Figure 14 or go to Insert>Sketch-Based Features>Pad menu and select pad tool as shown in Figure 15.


Figure 14.


Figure 15.

12) When “Pad Definition” dialog box appears after selecting pad tool enter the values as shown in Figure 16 and click ok.


Figure 16.

13) Select “yz plane” from specification tree as shown in Figure 17 .


Figure 17.


14) Select “Sketcher” workbench by clicking the icon as shown in Figure 18.


Figure 18.

15) Create a circle on top face of the circular pad as shown in figure as shown in Figure 19 , with 160 mm diameter.


Figure 19.

16) Exit sketcher workbench by clicking the icon in toolbar as shown in Figure 20.


Figure 20.

17) Select “Pad” tool by clicking the icon in the toolbar as shown in Figure 21 or go to Insert>Sketch-Based Features>Pad menu and select pad tool as shown in Figure 22.


Figure 21.


Figure 22.

18) When “Pad Definition” dialog box appears after selecting pad tool enter the values as shown in Figure 23 and click ok.


Figure 23.

19) Select “yz plane” from specification tree as shown in Figure 24 .


Figure 24.


20) Select “Sketcher” workbench by clicking the icon as shown in Figure 25.


Figure 25.

21) Create a circle on top face of the circular pad as shown in figure as shown in Figure 25b , with 20 mm diameter.


Figure 25b.

22) Exit sketcher workbench by clicking the icon in toolbar as shown in Figure 26.


Figure 26.

23) Select “Pocket” tool by clicking the icon in toolbar as shown in Figure 27 or go to Insert>Sketch-Based Features>Pocket menu and select “Pocket” as shown in Figure 28.


Figure 27.



Figure 28.

24) When “Pocket Definition” dialog box appears select “Sketcher.3” as profile and enter 20mm depth of pocket as shown in Figure 29 and click ok.


Figure 29.

25) Select “Edge Fillet” tool by clicking the icon in the toolbar as shown in Figure 30 or go to Insert>Dress-Up Features>Edge Fillet menu and select “Edge Fillet” as shown in Figure 31.


Figure 30.


Figure 31.

26) When “Edge Fillet Definition” dialog appears select four edges and enter 2mm as radius as shown in Figure 32 and click ok.


Figure 32.

27) Select “yz plane” from specification tree as shown in Figure 33 . later.


Figure 33.

28) Select “Sketcher” workbench by clicking the icon as shown in Figure 34.


Figure 34.

29) Now let us select “Line” tool by clicking the icon as shown in Figure 35 or select from Insert>Profile>Line>Line menu as shown in Figure 36.


Figure 35.


Figure 36.

30) Draw a sketch as shown in Figure 37.


Figure 37.

31) Exit “Sketcher” workbench by clicking the icon in toolbar as shown in Figure 38.


Figure 38.

32) Select “Pocket” tool by clicking the icon in toolbar as shown in Figure 39 or go to Insert>Sketch-Based Features>Pocket menu and select “Pocket” as shown in Figure 40.


Figure 39.



Figure 40.

23) When “Pocket Definition” dialog box appears select “Sketcher.4” as profile and enter 10mm depth of pocket as shown in Figure 41 and click ok.


Figure 41.

24) Select “Pocket.2” from specification tree as shown in Figure 42 .


Figure 42.

25) Select “Circular Pattern” tool by clicking the icon as shown in Figure 43 or to go Insert>Transformation Features>Circular Pattern menu and select the tool as shown in Figure 44.


Figure 43.


Figure 44.

26) When “Circular Pattern Definition” dialog box appears enter the parameters as shown in Figure 45.


Figure 45.

27) Resultant spur gear with hub would be as shown in Figure 46.


Figure 46.

 

Back to tutorial page