PartDesign: Scala
Scala |
Posizione nel menu |
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PartDesign → Multitrasformazione |
Ambiente |
PartDesign, Completo |
Avvio veloce |
Nessuno |
Introdotto nella versione |
- |
Vedere anche |
Nessuno |
Descrizione
Lo strumento Scala prende come input un insieme di una o più operazioni selezionate ('gli originali') e li scala per un determinato fattore. Poiché la scalatura avviene attorno al centro di gravità delle operazioni selezionate, di solito gli originali scompaiono all'interno delle versioni in scala. Pertanto, in genere è utile solo per effettuare il ridimensionamento come parte di una operazione di Multi-trasformazione.
A linear pattern and a polar pattern → Scaled the linear pattern with 3 steps (occurrences) and the polar pattern with 12 steps
If there is no previous transformation within the MultiTransform feature, scaled items will be placed at the same position as the base feature. This may result in unexpected shapes if the base feature isn't covered completely by the scaled object. And thus it is not recommended to use Scaled as the first transformation of a MultiTransform feature.
A base feature with a hole → Scaled object with 2 occurrences → Scaled object with 4 occurrences
A partire da FreeCAD 0.15, questa funzione non è disponibile direttamente, ma è inclusa come componente dello strumento Multitrasformazione.
Scaling a transformed feature
- Do one of the following:
- The MultiTransform parameters task panel opens.
- Right-click in the Transformations list and select Add scaled transformation from the context menu.
- A Scaled item is added to the list and the task panel is extended at the bottom to allow to set the Factor and Occurrences. See Options for more information.
- Press the OK bar at the bottom.
- Press the OK button at the top to finish.
Scaling a single feature
- Select a feature of the current body in the Tree view.
- Do one of the following:
- Press the MultiTransform button.
- Select the Part Design → Apply a pattern → Create MultiTransform option from the menu.
- The MultiTransform parameters task panel opens. See above.
Opzioni
Quando si crea una operazione Scala, la finestra di dialogo Parametri della scalatura offre le seguenti opzioni: Selezionare gli originaliLa finestra Vista combinata mostra lista delle operazioni (oggetti) "originali" che devono essere scalati. Fare clic su una operazione per aggiungerla alla lista. Fattore di scala e numero di copieFactor e Occurrences specificano rispettivamente il fattore di scala massimo e il numero totale di forme scalate (inclusa l'originale) che si vuole ottenere. |
- Factor: The factor to which the last feature is scaled.
- Occurrences: Number of steps from unscaled (1) to Factor (including base and last feature).
- A scaled transformation accepts the number of occurrences of the previous transformation as maximum value or any integer divisor of that number returning an integer result. So
12
,6
,4
,3
, and2
are valid for a Linear or Polar Pattern with 12 occurrences. - A scaled single feature accepts any integer number larger than 1.
- A scaled transformation accepts the number of occurrences of the previous transformation as maximum value or any integer divisor of that number returning an integer result. So
Notes
- The center of scaling is the features's center of gravity and that may cause:
- A growing item to protrude on the opposite side of the parent feature.
- A shrinking item to lose all contact with the parent feature and disappear.
- A shrinking pocket to become an invisible cavity inside the parent feature.
- Structure tools: Part, Group
- Helper tools: Create body, Create sketch, Edit sketch, Map sketch to face
- Modeling tools
- Datum tools: Create a datum point, Create a datum line, Create a datum plane, Create a local coordinate system, Create a shape binder, Create a sub-object(s) shape binder, Create a clone
- Additive tools: Pad, Revolution, Additive loft, Additive pipe, Additive helix, Additive box, Additive cylinder, Additive sphere, Additive cone, Additive ellipsoid, Additive torus, Additive prism, Additive wedge
- Subtractive tools: Pocket, Hole, Groove, Subtractive loft, Subtractive pipe, Subtractive helix, Subtractive box, Subtractive cylinder, Subtractive sphere, Subtractive cone, Subtractive ellipsoid, Subtractive torus, Subtractive prism, Subtractive wedge
- Transformation tools: Mirrored, Linear Pattern, Polar Pattern, Create MultiTransform, Scaled
- Dress-up tools: Fillet, Chamfer, Draft, Thickness
- Boolean: Boolean operation
- Extras: Migrate, Sprocket, Involute gear, Shaft design wizard
- Context menu: Set tip, Move object to other body, Move object after other object, Appearance, Set colors
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