FCGear InternalInvoluteGear/it: Difference between revisions
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Revision as of 11:48, 22 May 2024
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|
Menu location |
---|
Gear → Internal Involute Gear |
Workbenches |
FCGear |
Default shortcut |
None |
Introduced in version |
1.0 |
See also |
FCGear InvoluteGear |
Description
Internal involute gears from left to right: Spur gearing, helical gearing, double helical gearing
Usage
- Switch to the
FCGear Workbench.
- There are several ways to invoke the command:
- Press the
Internal Involute Gear button in the toolbar.
- Select the Gear →
Internal Involute Gear option from the menu.
- Press the
- Change the gear parameter to the required conditions (see Properties).
Properties
An FCGear InternalInvoluteGear object is derived from a Part Feature object and inherits all its properties. It also has the following additional properties:
Data
accuracy
- Datinumpoints (
Integer
): Default is6
. Change of the involute profile. Changing the value can lead to unexpected results.
base
- Datiheight (
Length
): Default is5 mm
. Value of the gear width. - Datimodule (
Length
): Default is1 mm
. Module is the ratio of the reference diameter of the gear divided by the number of teeth (see Notes). - Datiteeth (
Integer
): Default is15
. Number of teeth (see Notes). - Datithickness (
Length
): Default is5 mm
. Thickness of the uncut outer part of the gear.
computed
- Datiangular_backlash (
Angle
): (read-only) - Datida (
Length
): (read-only) Inside diameter, measured at the addendum (the tip of the teeth). - Datidf (
Length
): (read-only) Root diameter, measured at the foot of the teeth. - Datidw (
Length
): (read-only) Working pitch diameter. - Datioutside_diameter (
Length
): (read-only) Outside diameter. - Datitransverse_pitch (
Length
): (read-only) Pitch in the plane of rotation.
fillets
- Datihead_fillet (
Float
): Default is0 mm
. - Datiroot_fillet (
Float
): Default is0 mm
.
helical
- Datibeta (
Angle
): Default is0 °
. With the helix angle β a helical gear is created – positive value → rotation direction right, negative value → rotation direction left (see Notes). - Datidouble_helix (
Bool
): Default isfalse
,true
creates a double helix gear (see Notes). - Datiproperties_from_tool (
Bool
): Default isfalse
. Iftrue
and Datibeta is not zero, gear parameters are recomputed internally for the rotated gear.
involute
- Datipressure_angle (
Angle
): Default is20 °
(see Notes). - Datishift (
Float
): Default is0
. Generates a positive and negative profile shift (see Notes).
precision
- Datisimple (
Bool
): Default isfalse
,true
generates a simplified display (without teeth and only a cylinder in pitch diameter).
tolerance
- Datibacklash (
Length
): Default is0 mm
. Backlash, also called lash or play, is the distance between the teeth at a gear pair. - Daticlearance (
Float
): Default is0.25
(see Notes). - Datihead (
Float
): Default is-0.4 mm
. This value is used to change the tooth height. - Datireversed_backlash (
Bool
):true
backlash decrease orfalse
(default) backlash increase (see Notes).
version
- Dativersion (
String
):
Notes
See FCGear InvoluteGear.
Useful formulas
See FCGear InvoluteGear.