FCGear TimingGear: Difference between revisions
BavariaSHAPE (talk | contribs) No edit summary |
(Updated Properties to make them compatible with FCGear_InternalInvoluteGear.) |
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{{Docnav |
{{Docnav |
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|[[FCGear_WormGear|WormGear]] |
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|[[FCGear_CrownGear|FCGear CrownGear]] |
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|[[FCGear_LanternGear|LanternGear]] |
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|[[FCGear_LaternGear|FCGear LaternGear]] |
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|[[ |
|[[FCGear_Workbench|FCGear]] |
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|IconL= |
|IconL=FCGear_WormGear.svg |
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|IconR= |
|IconR=FCGear_LanternGear.svg |
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|IconC=FCGear_workbench_icon.svg |
|IconC=FCGear_workbench_icon.svg |
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}} |
}} |
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{{GuiCommand |
{{GuiCommand |
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|Name=FCGear TimingGear |
|Name=FCGear TimingGear |
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|MenuLocation= |
|MenuLocation=Gear → Timing Gear |
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|Workbenches=[[ |
|Workbenches=[[FCGear_Workbench|FCGear]] |
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|Shortcut=None |
|Shortcut=None |
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|Version=v0.16 |
|Version=v0.16 |
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<font color=red>This page is currently under construction.</font> |
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The purpose of timing gears is to allow the camshaft and crankshaft to turn the timing chain. The crankshaft turns to move pistons up and down inside the cylinders. The camshaft turns to allow intake and exhaust valves on the cylinders to open and close. These components are important for proper engine timing. |
The purpose of timing gears is to allow the camshaft and crankshaft to turn the timing chain. The crankshaft turns to move pistons up and down inside the cylinders. The camshaft turns to allow intake and exhaust valves on the cylinders to open and close. These components are important for proper engine timing. |
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Timing gears are connected to a timing belt or timing chain. |
Timing gears are connected to a timing belt or timing chain. |
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# There are several ways to invoke the command: |
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#* Select the {{MenuCommand|Gear → [[File:FCGear_TimingGear.svg|16px]] Timing Gear}} option from the menu. |
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# Invoke the command several way: |
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#* Using the {{MenuCommand|Gear Menu → Timing gear}}. |
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An FCGear TimingGear object is derived from a [[Part_Feature|Part Feature]] object and inherits all its properties. It also has the following additional properties: |
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===Data=== |
===Data=== <!--T:9--> |
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{{Properties_Title| |
{{Properties_Title|base}} |
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* {{PropertyData|Placement}}: [[Placement|Placement]] is the location and orientation of an object in space. |
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* {{PropertyData| |
* {{PropertyData|height|Length}}: Default is {{Value|5 mm}}. Value of the gear width. |
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{{Properties_Title|computed}} |
{{Properties_Title|computed}} |
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* {{PropertyData|h}}: Radial height of teeth (not changeable, is calculated automatically). |
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* {{PropertyData| |
* {{PropertyData|h|Length}}: (read-only) Radial height of teeth. |
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* {{PropertyData| |
* {{PropertyData|offset|Length}}: (read-only) X-Offset of second arc mid-point. |
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* {{PropertyData| |
* {{PropertyData|pitch|Length}}: (read-only) Pitch of gear. |
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* {{PropertyData| |
* {{PropertyData|r0|Length}}: (read-only) Radius of first arc. |
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* {{PropertyData| |
* {{PropertyData|r1|Length}}: (read-only) Radius of second arc. |
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* {{PropertyData|rs|Length}}: (read-only) Radius of third arc. |
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* {{PropertyData|u}}: Radial difference between pitch … diameter and head of gear |
* {{PropertyData|u|Length}}: (read-only) Radial difference between pitch … diameter and head of gear. |
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{{Properties_Title| |
{{Properties_Title|version}} |
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* {{PropertyData| |
* {{PropertyData|version|String}}: |
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=== View === |
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The parameter descriptions of the {{Emphasis|View}} tab will be found in [[Property_editor|Property editor]], further below at {{Emphasis|Example of the properties of a PartDesign object}}. |
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==Useful formulas== <!--T:22--> |
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==Limitations== |
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*{{Emphasis|addendum diameter}} = {{Emphasis|pitch diameter}} + 2 * {{Emphasis|module}} |
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*{{Emphasis|belt length}} = 2 * {{Emphasis|axle base}} + {{Emphasis|belt tooth pitch}} : 2 * {{Emphasis|(teeth 1 + 2)}} + {{Emphasis|belt tooth pitch²}} : 4 * pi² * {{Emphasis|axle base}} * {{Emphasis|(teeth 1 - 2)²}} |
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*{{Emphasis|axle base}} = {{Emphasis|belt length}} : 4 - {{Emphasis|belt tooth pitch}} : 8 * {{Emphasis|(teeth 1+2)}} + ¼ * sqrt [{{Emphasis|belt length}} - ½ * {{Emphasis|belt tooth pitch}} * {{Emphasis|(teeth 1+2)²}} - 2 * {{Emphasis|belt tooth pitch²}} * {{Emphasis|(teeth 1+2)²}} : pi²] |
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Limitation are not known yet. |
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{{Docnav |
{{Docnav |
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|[[FCGear_WormGear|WormGear]] |
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|[[FCGear_CrownGear|FCGear CrownGear]] |
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|[[FCGear_LanternGear|LanternGear]] |
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|[[FCGear_LaternGear|FCGear LaternGear]] |
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|[[ |
|[[FCGear_Workbench|FCGear]] |
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|IconL= |
|IconL=FCGear_WormGear.svg |
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|IconR= |
|IconR=FCGear_LanternGear.svg |
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|IconC=FCGear_workbench_icon.svg |
|IconC=FCGear_workbench_icon.svg |
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}} |
}} |
Latest revision as of 15:56, 5 October 2022
FCGear TimingGear |
Menu location |
---|
Gear → Timing Gear |
Workbenches |
FCGear |
Default shortcut |
None |
Introduced in version |
v0.16 |
See also |
None |
Description
The purpose of timing gears is to allow the camshaft and crankshaft to turn the timing chain. The crankshaft turns to move pistons up and down inside the cylinders. The camshaft turns to allow intake and exhaust valves on the cylinders to open and close. These components are important for proper engine timing.
Timing gears are connected to a timing belt or timing chain.
Above: Timing gear
Usage
- Switch to the FCGear Workbench.
- There are several ways to invoke the command:
- Press the Timing Gear button in the toolbar.
- Select the Gear → Timing Gear option from the menu.
- Change the gear parameter to the required conditions (see Properties).
Properties
An FCGear TimingGear object is derived from a Part Feature object and inherits all its properties. It also has the following additional properties:
Data
base
- Dataheight (
Length
): Default is5 mm
. Value of the gear width. - Datateeth (
Integer
): Default is15
. Number of teeth. - Datatype (
Enumeration
): Default isgt2
. Type of timing gear – profile pitch for timing belts (see Notes).
computed
- Datah (
Length
): (read-only) Radial height of teeth. - Dataoffset (
Length
): (read-only) X-Offset of second arc mid-point. - Datapitch (
Length
): (read-only) Pitch of gear. - Datar0 (
Length
): (read-only) Radius of first arc. - Datar1 (
Length
): (read-only) Radius of second arc. - Datars (
Length
): (read-only) Radius of third arc. - Datau (
Length
): (read-only) Radial difference between pitch … diameter and head of gear.
version
- Dataversion (
String
):
Notes
- type: The pitch of the timing belts (distance from tooth centre to tooth centre of consecutive teeth) is specified in types. GT2 has a pitch of 2 mm, GT3 of 3 mm, GT5 of 5 mm etc..
Useful formulas
- addendum diameter = pitch diameter + 2 * module
- belt length = 2 * axle base + belt tooth pitch : 2 * (teeth 1 + 2) + belt tooth pitch² : 4 * pi² * axle base * (teeth 1 - 2)²
- axle base = belt length : 4 - belt tooth pitch : 8 * (teeth 1+2) + ¼ * sqrt [belt length - ½ * belt tooth pitch * (teeth 1+2)² - 2 * belt tooth pitch² * (teeth 1+2)² : pi²]