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

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Gear Train

GUI Familiarity Level Required: LowEstimated Time Required: 30 minutes

MSC.ADAMS 2005 r2

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Topics CoveredTopics Covered

1. Import gear macro

2. Create a Cylinder

3. Create gear geometry

4. Create revolute joint

5. Create gear joints

6. Add motion

7. 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

In this tutorial you will learn how to:

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Gear Train ProblemGear Train Problem

Create a gear train. Which has a pinion gear rotating a gear, thus rotating the

planet gear

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What You Should AccomplishWhat You Should Accomplish

When you complete this tutorial you will have a gear train showing gears that

mesh internally and externally.

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Gear MacroGear Macro

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

a

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Importing MacroImporting Macro

a. Click Import a File radio button

b. Click OK

c. Right-click File to Read text box. Choose Browse…

d. Search you directory to find the folder you saved the macro.

e. Click on “setup_gear_macro”

f. Click Open

a

c

d

e

b

f

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Change UnitsChange Units

a. Click Settings menu, then Units…

The Units Settings window will appear

b. Select Centimeter from the Length pull down menu

c. Click OK

ab

c

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To edit the grid size:

a. Click Settings menu, then Working Grid…

The Working Grid Settings window will appear

a. Change the Spacing text fields in X and Y to (10mm)

b. Click OK

a

c

b

Change SettingsChange Settings

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a

a. Click View menu, select Coordinate Windowb. Select Marker from the tool stackc. Create a Marker at point (0,0,0)d. Create another marker at point (20,0,0)

Creating a MarkerCreating a Marker

bdc

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Create CylinderCreate Cylinder

a. Select Cylinder from rigid Body tool stack

b. Turn on Radius checkbox

c. Enter (5.0cm) in Radius text field

d. Click point (-5,0,0)

e. Click point (-4,0,0)

a

bc

d e

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Rotate CylinderRotate Cylinder

a. Right click center of cylinder, select Marker: MARKER_3 Modify

b. in Orientation text field enter 90.0, 0.0, 0.0

c. Click OK

a

b

c

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a. Click Build menu, Select Create Gear Geometry

b. Enter Marker_3 in Center Marker text field

c. Enter ( 4.5 cm ) in Inner Radius text field

d. Enter ( 5.5 cm ) in Outer Radius text field

e. Enter 15 in Number Of Teeth text field

f. Enter ( 2.0 cm ) in Thickness text field

g. Enter pinion in Gear Name text field

h. Click Ok

Create Gear GeometryCreate Gear Geometry

a

bcd

ef

g

h

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Add Revolute JointAdd Revolute Joint

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

a

bc d

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Add a MotionAdd a Motion

a. Right-click motion tool stack, select Rotational Motion tool

b. Enter (360d) in Speed text field

c. Click on JOINT_1

a

b

c

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a. Right click on the gear, select Appearance from Cylinder:CYLINDER_1 menu

b. Turn off the Off Visibility radio button

Check your model

c. Click on the Simulation tool

d. Click Play button

Changing AppearanceChanging Appearance

a

b

c

d

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Create GearCreate Gear

Create a second gear with radius of (10cm) at point (10,0,0)

Create a revolute joint in the center

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a. Right-click on joint tool stack, select Gear Joint

b. Right click text field in Joint Name, select Joint Pick choose the revolute joint on the pinion (JOINT_1)

c. Right click text field in Joint Name, select Joint Pick choose the revolute joint on the gear (JOINT_2)

d. Right click text field in Common Velocity Marker, select Marker Pick choose ground MARKER_1

e. Click OK

a

c

e

b d

Create Gear JointCreate Gear Joint

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Run simulation to test gear joint

a. Right click center of gear joint, select Marker:MARKER_1 Modify

b. In Orientation text field enter 0.0, 90.0, 0.0

c. Click OK

a

c

b

Revolving a Gear JointRevolving a Gear Joint

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a. Right click center of gear joint, select Modify from –Marker:MARKER_3 menu

b. in Orientation text field enter 82.0, 0.0, 0.0

c. Click OK

ba

c

Aligning GearsAligning Gears

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Create another gear of radius (20cm) at point (0,0,0)

Enter these values:

Create GearCreate Gear

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a. Create another Gear Joint between the gear and the planet

Create Gear JointCreate Gear Joint

a

b c

b. Modify MARKER_2

c. Rotate 90 deg in Y-dir

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VerifyVerify

Run a simulation to verify your model works properly

a. Right-click Information button, select Verify

a

The information screen will open up

There should be 0 Degrees of Freedom and no redundant constraints

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What You Should AccomplishWhat You Should Accomplish

When you complete this tutorial you will have a gear train showing gears that

mesh internally and externally

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Topics CoveredTopics Covered

1. Import gear macro

2. Create a Cylinder

3. Create gear geometry

4. Create revolute joint

5. Create gear joints

6. Add motion

7. Simulate

In this tutorial you will learn how to:

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• 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.

Best PracticesBest Practices