﻿ MechDesigner Reference & User Interface > 2.2 Mechanism-Editor: > Kinematic Function-Blocks > Kinematic FB | Add Gearing FB

# Kinematic FB | Add Gearing FB

### Why use a Gearing Function-Block?

#### Terminology and Definitions

 Function-Block : FB A Function-Block has an input-connector and an output-connector. A Function-Blocks modifies data at its input-connector to give different data at its output-connector. Different Function-Blocks modify data in different ways. Gearing FB : The default output from a Gearing FB is equal to the input. The Gearing FB has 3 parameters. Gearing Ratio is the parameter that multiplies the input. Also, you can add a constant value to the data before or after the Gearing Ratio is applied. You can enter the Gearing Ratio as a ratio of two integers, or as a real number.

### Gearing FB - the function ...

 The Gearing FB applies a linear equation. The linear equation is: Output motion-value = ( * (Input motion-value + )) + Use the Gearing FB dialog-box to edit the parameters .

STEP 1: Add the Gearing FB to the graphic-area

 1.Click Kinematics FB toolbar > Gearing FB or 1.Click Add menu > Add Gearing FB Then: 2.Click the graphic-area

The Gearing FB is now in the graphic-area (and Assembly-Tree).

Edit :

STEP 2: Open the Gearing FB dialog-box

 1.Double-click a Gearing FB in the graphic-area or Assembly-Tree - or - 1.

Dialog :

STEP 3:

Notes :

The default parameters in the Gearing FB do not change the motion-values at the output-connector.

Use a Gearing Ratio of –1 to reverse the direction of a Crank.

Connect a Gearing FB to the input of a Motion FB to change the frequency of a motion.

Connect a Motion FB to the input of a Gearing FB to change the amplitude and/or direction of a motion.