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==Descrizione== |
==Descrizione== |
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Una [[Image:Part_Helix.svg|24px]] '''Part Elica''' è una forma parametrica che può essere creata con il comando [[Image:Part_Primitives.svg|24px]] [[Part_Primitives/it|Part Primitive]] . Nel sistema di coordinate definito dalla sua proprietà {{PropertyData|Placement}}, l'asse dell'elica corrisponde all'asse Z e il suo punto inferiore, il punto iniziale, si trova sull'asse X. |
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La primitiva geometrica {{Button|[[File:Part_Helix.svg|16px]] [[Part_Helix/it|Elica]]}} crea una forma ad elica, definita da un raggio, un passo e un'altezza totale. |
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[[Image:Part_Helix_Example.png|400px]] |
[[Image:Part_Helix_Example.png|400px]] |
Revision as of 21:53, 2 January 2024
Part Elica |
Posizione nel menu |
---|
Parte → Crea primitive → Elica |
Ambiente |
Part, OpenSCAD |
Avvio veloce |
Nessuno |
Introdotto nella versione |
- |
Vedere anche |
Part Primitive |
Descrizione
Una Part Elica è una forma parametrica che può essere creata con il comando Part Primitive . Nel sistema di coordinate definito dalla sua proprietà DatiPlacement, l'asse dell'elica corrisponde all'asse Z e il suo punto inferiore, il punto iniziale, si trova sull'asse X.
Utilizzo
See Part Primitives.
Example
A Part Helix object created with the scripting example below is shown here.
Opzioni
Un uso comune della primitiva elica è per creare delle filettature insieme a un profilo chiuso e all'operazione Sweep. Questo processo funziona essenzialmente allo stesso modo in PartDesign utilizzando lo strumento Sweep additivo .
Properties
See also: Property editor.
A Part Helix object is derived from a Part Feature object and inherits all its properties. It also has the following additional properties:
Data
Attachment
The object has the same attachment properties as a Part Part2DObject.
Coordinate System
- DatiLocal Coord (
Enumeration
): The handedness, or direction, of the helix:Right-handed
orLeft-handed
. The default isRight-handed
, meaning the helix turns counterclockwise as it goes up.
Helix
- DatiPitch (
Length
): The distance between two consecutive turns of the helix measured along its Z axis. The default is1mm
. - DatiHeight (
Length
): The height of the helix. The default is2mm
. - DatiRadius (
Length
): The start radius of the helix. The helix has a constant radius if DatiAngle is0°
. - DatiSegment Length (
QuantityConstraint
): The number of turns per helix subdivision. The default is1
, meaning each full turn of the helix is a separate segment. Use0
to suppress subdivision. - DatiAngle (
Angle
): The angle that defines of the outer shape of the helix. Valid range:-90° < value < 90°
. The default is0°
. If it is0°
the helix is cylindrical, else it is conical.
Scripting
See also: Autogenerated API documentation, Part scripting and FreeCAD Scripting Basics.
A Part Helix can be created with the addObject()
method of the document:
helix = FreeCAD.ActiveDocument.addObject("Part::Helix", "myHelix")
- Where
"myHelix"
is the name for the object. - The function returns the newly created object.
Example:
import FreeCAD as App
doc = App.activeDocument()
helix = doc.addObject("Part::Helix", "myHelix")
helix.Pitch = 2
helix.Height = 3
helix.Radius = 4
helix.SegmentLength = 21
helix.Angle = 45
helix.Placement = App.Placement(App.Vector(1, 2, 3), App.Rotation(75, 60, 30))
doc.recompute()
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