PartDesign SubtractiveHelix: Difference between revisions
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|[[PartDesign_SubtractivePipe|Subtractive pipe]] |
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The '''SubtractiveHelix''' tool modifies a solid by sweeping a selected sketch or 2D object along a helix path cutting away the material. |
The '''SubtractiveHelix''' tool modifies a solid by sweeping a selected sketch or 2D object along a helix path cutting away the material. |
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</translate>[[File:SubtractiveHelix overview example.png|none]]<translate> |
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[[File:SubtractiveHelix_overview_example.png]] |
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''The profile (B), is swept around axis (A) in order to produce the helical groove (C) in the pre-existing work piece'' |
''The profile (B), is swept around axis (A) in order to produce the helical groove (C) in the pre-existing work piece'' |
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==Usage== |
== Usage == |
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# Select the sketch to be swept into a helix. A face on the existing solid can alternatively be used. |
# Select the sketch to be swept into a helix. A face on the existing solid can alternatively be used. |
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# Press the {{ |
# Press the {{Button|[[Image:PartDesign_SubtractiveHelix.svg|24px]] '''SubtractiveHelix'''}} button. |
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# Set the Helix parameters (see next section). |
# Set the Helix parameters (see next section). |
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# Inspect the Helix in the view window, to ensure that the parameters do not result in a self intersecting helix. |
# Inspect the Helix in the view window, to ensure that the parameters do not result in a self intersecting helix. |
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# Press {{ |
# Press {{Button|OK}}. |
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When creating a SubtractiveHelix, the '''Helix parameters''' dialogue offers several parameters specifying how the sketch should be swept. |
When creating a SubtractiveHelix, the '''Helix parameters''' dialogue offers several parameters specifying how the sketch should be swept. |
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[[File:PartDesign SubtractiveHelix dialog.png|frame|left]] |
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[[File:PartDesign_SubtractiveHelix_dialog.png|frame]] |
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This option specifies the axis about which the sketch is to be swept. |
This option specifies the axis about which the sketch is to be swept. |
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* '''Vertical sketch axis''': selects the vertical sketch axis. |
* '''Vertical sketch axis''': selects the vertical sketch axis. |
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* '''Select reference...''': allows selection in the 3D view of an edge on the Body, or a [[PartDesign Line|datum line]]. |
* '''Select reference...''': allows selection in the 3D view of an edge on the Body, or a [[PartDesign Line|datum line]]. |
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===Mode=== |
=== Mode === |
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This controls what parameters will be used to define the helix, Allowable choices are: Pitch-Height, Pitch-Turns and Height-Turns. |
This controls what parameters will be used to define the helix, Allowable choices are: Pitch-Height, Pitch-Turns and Height-Turns. |
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===Pitch=== |
=== Pitch === |
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The distance between turns in the helix. |
The distance between turns in the helix. |
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===Height=== |
=== Height === |
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The height of the helix (center-center). |
The height of the helix (center-center). |
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===Turns=== |
=== Turns === |
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The number of turns in the helix. Define as Height/Pitch |
The number of turns in the helix. Define as Height/Pitch |
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===Cone Angle=== |
=== Cone Angle === |
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The rate at which the radius of the helix increase along the axis. Allowable range: [-89°, +89°]. |
The rate at which the radius of the helix increase along the axis. Allowable range: [-89°, +89°]. |
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===Left handed=== |
=== Left handed === |
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If checked, the turning direction of helix is reversed from default clockwise to counterclockwise. |
If checked, the turning direction of helix is reversed from default clockwise to counterclockwise. |
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===Reversed=== |
=== Reversed === |
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If checked, the axis direction of helix is reversed from default. |
If checked, the axis direction of helix is reversed from default. |
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===Remove outside of profile=== |
=== Remove outside of profile === |
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If checked, the result will be the intersection of the swept profile and the preexisting body. |
If checked, the result will be the intersection of the swept profile and the preexisting body. |
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===Update view=== |
=== Update view === |
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If checked, the helix will be shown in the view, and updated automatically on every change of the parameters. |
If checked, the helix will be shown in the view, and updated automatically on every change of the parameters. |
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==Properties == |
== Properties == |
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Below are properties which can be defined after creation of the feature. |
Below are properties which can be defined after creation of the feature. |
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* {{PropertyData|Allow multiple face}}: Not used. |
* {{PropertyData|Allow multiple face}}: Not used. |
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==Examples== |
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{{Docnav |
{{Docnav |
Revision as of 12:44, 19 February 2021
PartDesign SubtractiveHelix |
Menu location |
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PartDesign → Create a subtractive feature → Subtractive helix |
Workbenches |
PartDesign |
Default shortcut |
None |
Introduced in version |
0.19 |
See also |
Additive Helix |
Description
The SubtractiveHelix tool modifies a solid by sweeping a selected sketch or 2D object along a helix path cutting away the material.
File:SubtractiveHelix overview example.png
The profile (B), is swept around axis (A) in order to produce the helical groove (C) in the pre-existing work piece
Usage
- Select the sketch to be swept into a helix. A face on the existing solid can alternatively be used.
- Press the SubtractiveHelix button.
- Set the Helix parameters (see next section).
- Inspect the Helix in the view window, to ensure that the parameters do not result in a self intersecting helix.
- Press OK.
Options
When creating a SubtractiveHelix, 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.
- Vertical sketch axis: selects the vertical sketch axis.
- 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, Allowable choices are: Pitch-Height, Pitch-Turns and Height-Turns.
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
The rate at which the radius of the helix increase along the axis. 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.
Remove outside of profile
If checked, the result will be the intersection of the swept profile and the preexisting body.
Update view
If checked, the helix will be shown in the view, and updated automatically on every change of the parameters.
Properties
Below are properties which can be defined after creation of the feature.
- DataPitch: The axial distance between two turns.
- DataHeight: The total length of the helix (not accounting for the extent of the profile)
- DataTurns: The number of turns (do not need to be a whole number)
- DataLeft Handed:
- DataReversed: true or false. See Reversed.
- DataAngle: The rate at which the radius of the helix increase along the axis. Allowable range: [-89°, +89°].
- DataReference axis: The the helix axis
- DataMode: The helix input mode (pitch-height, pitch-turns, turns-height)
- DataOutside: If true, the result will be the intersection of the swept profile and the preexisting body.
- DataHas 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.
- DataRefine: true or false. If set to true, cleans the solid from residual edges left by features. See Part RefineShape for more details.
- DataProfile: Either a sketch containing a closed contour, or a face.
- DataMidplane: Not used.
- DataUp to face: Not used.
- DataAllow multiple face: Not used.
- 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, Color per face
- Getting started
- Installation: Download, Windows, Linux, Mac, Additional components, Docker, AppImage, Ubuntu Snap
- Basics: About FreeCAD, Interface, Mouse navigation, Selection methods, Object name, Preferences, Workbenches, Document structure, Properties, Help FreeCAD, Donate
- Help: Tutorials, Video tutorials
- Workbenches: Std Base, Arch, Assembly, CAM, Draft, FEM, Inspection, Mesh, OpenSCAD, Part, PartDesign, Points, Reverse Engineering, Robot, Sketcher, Spreadsheet, Start, Surface, TechDraw, Test Framework, Web
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