Add Gear-Pair removes ONE degree-of-freedom from the model.

Before you do Add Gear-Pair,

•the Driving-Part, which will be the input Pinion, is kinematically-defined.

•the Driven-Part, which will be the output WHEEL, is not kinematically-defined.

After you do Add Rack/Pinion,

•the Driving-Part AND the Driven-Part are kinematically-defined.

•we add a Gear to the Driving-Part  

•we add a Gear to the Driven-Part

Gear-Wheel (or Gear) :

A rotating-Part with gear-teeth at a fixed diameter. Control its diameter with its the number-of-teeth and module.

Gear-Pair :

Two inter-locking gear-wheels. Their teeth have External or Internal mesh. The angular velocity of each gear-wheel is related by the number-of-teeth on each gear-wheel, and the type of mesh.

Driving Part :

The rotating-Part that is kinematically-defined, and whose motion you control (even if it is stationary) before you do Add Gear-Pair.

Driven Part :

The rotating-Part whose motion you control after you do Add Gear-Pair by the Driven-Part, the Number-of-Teeth on each Gear in the Gear-Pair, and the Mesh.

Gear-Mesh (or Mesh) :

Inter-locking gear-teeth of a Gear-Pair that transmit a torque and motion from the Driving Part to the Driven Part.

External Mesh :

The gear-teeth of the two gear-wheels point outwards from their centers-of-rotation.

Internal Mesh :

The gear-teeth of one gear-wheel point inwards towards its center-of-rotation.

Simple Gear-Pair :

Two gear-wheels that rotate about two fixed centers.

Epicyclic Gear-Pair :

One gear-wheel orbits around the center of the other gear-wheel.

3 × Parts ; 3 × Lines ; 2 × Pin-Joints

3 × Parts ; 3 × Lines ; 2 × Pin-Joints

STEP 1: Click Add Gear-Pair (Simple)

1.Mechanism menu > Gear-Pair OR 1.Machine-elements toolbar > Add Gear-Pair

There are four elements to select in the Command-Manager

STEP 2: Select the four elements

STEP 2: continued...

The Part-Editor opens automatically.

The Part-Editor closes automatically.

STEP 3: Complete the Command

Result:

To edit the Gear-Pair parameters: see Gear-Pair dialog

STEP 1: Click Add Gear-Pair (Epicyclic)

1.Mechanism menu > Gear-Pair OR 1.Machine-elements toolbar > Add Gear-Pair

There are four elements to select in the Command-Manager

STEP 2: Select the four elements

STEP 2: continued...

The Part-Editor opens automatically.

The Part-Editor closes automatically.

STEP 3: Complete the Command

Result:

To edit the Gear-Pair parameters, see Gear-Pair dialog

Kinematics-Tree