Projekt Części: Addytywna helisa

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Projekt Części: Addytywna helisa

Lokalizacja w menu
Projekt Części → Utwórz cechę przez dodanie → Addytywna helisa
Środowisko pracy
Projekt Części
Domyślny skrót
brak
Wprowadzono w wersji
0.19
Zobacz także
Komponent bryła pierwotna do odjęcia

Opis

Narzędzie Addytywna helisa utworzy bryłę poprzez przeciągnięcie wybranego szkicu lub obiektu 2D po ścieżce spiralnej.

Profil (B) jest obracany wokół osi (A) w celu wytworzenia bryły spiralnej (C).

Użycie

  1. Wybierz szkic, który ma zostać przekształcony w helisę. Alternatywnie można użyć ściany na istniejącej bryle.
  2. Naciśnij przycisk Addytywna helisa.
  3. Ustaw parametry helisy (patrz następna sekcja).
  4. Sprawdź helisę w oknie widoku, aby upewnić się, że parametry nie powodują samo przecinającej się helisy.
  5. Naciśnij OK.

Opcje

When creating an Additive Helix, the Helix parameters dialogue offers several parameters specifying how the sketch should be swept.

Axis

This option specifies the axis about which the sketch is to be swept.

  • Normal sketch axis: selects the normal of the sketch that runs through the sketch origin as axis. introduced in version 0.20
  • Vertical sketch axis: selects the vertical sketch axis. This is the default for new helices.
  • Horizontal sketch axis: selects the horizontal sketch axis.
  • Construction line: selects a construction line contained in the sketch used by the Helix. The drop down list will contain an entry for each construction line. The first construction line created in the sketch will be labelled Construction line 1.
  • Base (X/Y/Z) axis: selects the X, Y or Z axis of the Body's Origin;
  • Select reference...: allows selection in the 3D view of an edge on the Body, or a datum line.

Mode

This controls what parameters will be used to define the helix. The choices are:

  • Pitch-Height-Angle: definition via the height per turn and the overall height
  • Pitch-Turns-Angle: definition via the height per turn and the number of turns
  • Height-Turns-Angle: definition via the overall height and the number of turns
  • Height-Turns-Growth introduced in version 0.20: definition via the overall height, the number of turns and the growth of the helical radius. So a Height of zero leads to a path in form of a spiral. A Height and Growth of zero to leads to a path in form of a circle.

Pitch

The distance between turns in the helix.

Height

The height of the helix (center-center).

Turns

The number of turns in the helix. Define as Height/Pitch

Cone Angle

Angle of the cone that forms a hull around the helix. Allowable range: [-89°, +89°].

Left handed

If checked, the turning direction of helix is reversed from default clockwise to counterclockwise.

Reversed

If checked, the axis direction of helix is reversed from default.

Update view

If checked, the helix will be shown in the view, and updated automatically on every change of the parameters.

Preferences

  • An additive helix that does not intersect the body will be visible in the preview if Tools → Edit parameters... → BaseApp → Preferences → Mod → PartDesign → AdditiveHelixPreview is set to true. The default for this preference is false. introduced in version 0.20

Properties

  • DANEPitch: The axial distance between two turns.
  • DANEHeight: The total length of the helix (not accounting for the extent of the profile)
  • DANETurns: The number of turns (does not need to be a whole number)
  • DANELeft Handed: See Left Handed.
  • DANEReversed: See Reversed.
  • DANEAngle: The rate at which the radius of the helix increase along the axis. Allowable range: [-89°, +89°].
  • DANEReference axis: The helix axis
  • DANEMode: The helix input mode (pitch-height, pitch-turns, turns-height)
  • DANEOutside: Not used (Used in SubtractiveHelix)
  • DANEHas Been Edited: If false, the tool will propose an initial value for pitch based on the profile bounding box, so that self intersection is avoided.
  • DANERefine: true or false. If set to true, cleans the solid from residual edges left by features. See Part RefineShape for more details.
  • DANEProfile: Either a sketch containing a closed contour, or a face.
  • DANEMidplane: Not used.
  • DANEUp to face: Not used.
  • DANEAllow multiple face: Not used.

Examples

Example helix using a B-spline in the sketch
Example helix where the helix axis is normal to the sketch plane resulting in a "Pad with twist" effect.