1. Gear Train MSC.ADAMS 2005 r2 GUI Familiarity Level Required: Low
Estimated Time Required: 30 minutes
MSC.ADAMS 2005 r2

2. Topics Covered In this tutorial you will learn how to:
Import gear macro
Create a Cylinder
Create gear geometry
Create revolute joint
Create gear joints
Add motion
Simulate
You will need to download “gear_macro.zip” to be able to complete this tutorial
If you have any difficulties, import the “gear_train_shortcut1.cmd” file and proceed from pg 16
If you have any difficulties, import the “gear_train_shortcut2.cmd” file and proceed from pg 19
If you have any difficulties, import the “gear_train_complete.cmd” file and proceed from pg 23

3. Gear Train Problem
Create a gear train. Which has a pinion gear rotating a gear, thus rotating the planet gear

4. What You Should Accomplish
When you complete this tutorial you will have a gear train showing gears that mesh internally and externally.

5. Gear Macro
Download the files “gear_mac.cmd” and “setup_gear_macro.cmd “ and save them into the same directory as ADAMS/View is installed a

6. Importing Macro Click Import a File radio button Click OK a b c
Right-click File to Read text box. Choose Browse… d e
Search you directory to find the folder you saved the macro.
Click on “setup_gear_macro”
Click Open f

7. Change Units Click Settings menu, then Units…
The Units Settings window will appear
Select Centimeter from the Length pull down menu
Click OK b a c

8. Change Settings To edit the grid size:
Click Settings menu, then Working Grid…
The Working Grid Settings window will appear
Change the Spacing text fields in X and Y to (10mm)
Click OK a b c

9. Creating a Marker Click View menu, select Coordinate Window
Select Marker from the tool stack
Create a Marker at point (0,0,0)
Create another marker at point (20,0,0) b c d a

10. Create Cylinder Select Cylinder from rigid Body tool stack
Turn on Radius checkbox
Enter (5.0cm) in Radius text field
Click point (-5,0,0)
Click point (-4,0,0) a d e b c

11. Rotate Cylinder
Right click center of cylinder, select Marker: MARKER_3  Modify
in Orientation text field enter 90.0, 0.0, 0.0
Click OK a b c

12. Create Gear Geometry Click Build menu, Select Create Gear Geometry
Enter Marker_3 in Center Marker text field
Enter ( 4.5 cm ) in Inner Radius text field
Enter ( 5.5 cm ) in Outer Radius text field
Enter 15 in Number Of Teeth text field
Enter ( 2.0 cm ) in Thickness text field
Enter pinion in Gear Name text field
Click Ok b c d e f g h a

13. Add Revolute Joint
Right-click on the Joint tool stack, select Joint: Revolute tool.
Set the Construction option menu to 1 Location and Normal to Grid.
Left-click on the marker PART_2.MARKER_1 at the center of the cylinder.
A joint between the cylinder and the ground is created at that location. a c d b

14. Add a Motion
Right-click motion tool stack, select Rotational Motion tool
Enter (360d) in Speed text field
Click on JOINT_1 a c b

15. Changing Appearance
Right click on the gear, select Appearance from Cylinder:CYLINDER_1 menu
Turn off the Off Visibility radio button
Check your model
Click on the Simulation tool
Click Play button c b d a

16. Create Gear
Create a second gear with radius of (10cm) at point (10,0,0)
Create a revolute joint in the center

17. Create Gear Joint Right-click on joint tool stack, select Gear Joint
Right click text field in Joint Name, select Joint Pick choose the revolute joint on the pinion (JOINT_1)
Right click text field in Joint Name, select Joint Pick choose the revolute joint on the gear (JOINT_2)
Right click text field in Common Velocity Marker, select Marker Pick choose ground MARKER_1
Click OK a c b d e

18. Revolving a Gear Joint
Right click center of gear joint, select Marker:MARKER_1  Modify
In Orientation text field enter 0.0, 90.0, 0.0
Click OK a b c
Run simulation to test gear joint

19. Aligning Gears
Right click center of gear joint, select Modify from –Marker:MARKER_3 menu
in Orientation text field enter 82.0, 0.0, 0.0
Click OK a b c

20. Create Gear Create another gear of radius (20cm) at point (0,0,0)
Enter these values:

21. Create Gear Joint
Create another Gear Joint between the gear and the planet a
Modify MARKER_2
Rotate 90 deg in Y-dir b c

22. Verify Right-click Information button, select Verify a
The information screen will open up
There should be 0 Degrees of Freedom and no redundant constraints
Run a simulation to verify your model works properly

23. What You Should Accomplish
When you complete this tutorial you will have a gear train showing gears that mesh internally and externally

24. Topics Covered In this tutorial you will learn how to:
Import gear macro
Create a Cylinder
Create gear geometry
Create revolute joint
Create gear joints
Add motion
Simulate

25. Best Practices
Make sure the units are correctly set.
Make sure the revolute joint is in the correct direction.
Check dimensions of your parts to make sure they are correct.
Check orientation of the parts and joints to make sure it is correct.
Make sure your model verification is successful
Make sure the measures are set properly.
Make sure the plot is displaying the correct set of results.