FCGear InvoluteRack/en

Description
Gear racks are used to convert a rotary motion into a linear motion or vice versa. The following examples show the different applications:
 * A rack with gear on at a retaining weir.
 * Various rack systems of rack-and-pinion railways.
 * Rack and pinion steering in a vehicle.
 * Rack and pinion winch as mechanical hoist (e.g. car jack).
 * Pneumatic rack and pinion drives used to control valves in pipeline transport.


 * [[Image:Involute-Rack_example.png]]

Usage

 * 1) Switch to the [[Image:FCGear_workbench_icon.svg|22px]] FCGear Workbench.
 * 2) Invoke the command several way:
 * 3) * Press the FCGear_InvoluteRack.svg Create an Involute rack button in the tool bar.
 * 4) * Using the.
 * 5) Change the gear parameter to the required conditions (see  below).

Data

 * : Placement is the location and orientation of an object in space.
 * : User name of the object in the Tree view.


 * : Pitch in the transverse plane – not changeable, is calculated automatically (see also the information in ).


 * : If, than the total length of the rack is teeth * pitch, otherwise the rack starts with a tooth-flank.
 * : With the helix angle β a helical gear is created (positive value → rotation direction right, negative value → rotation direction left).
 * : Default is 0,25 (see also the information in ).
 * : creates a double helix gear (see also the information in )
 * : Default is 0,00. This value is used to change the tooth height.
 * : Value of the gear width.
 * : Module is the ratio of the reference diameter of the gear divided by the number of teeth (see also the information in ).
 * : If helix angle β is given and is enabled, gear parameters are internally recomputed for the rotated gear.
 * : generates a simplified display (without teeth).
 * : Number of teeth
 * : Height from the tooth root to the lower side of the rod.


 * : Default is 20 (see also the information in ).

View
The parameter descriptions of the tab will be found in Property editor, further below at.

Limitations
No limitations are known.

Useful formulas
For more information see Involute gear.

Scripting
Use the power of python to automate your gear modeling: