PartDesign SubtractivePipe: Difference between revisions
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{{Docnav |
{{Docnav |
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|[[PartDesign_SubtractiveLoft|Subtractive loft]] |
|[[PartDesign_SubtractiveLoft|Subtractive loft]] |
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|[[PartDesign_SubtractiveHelix|Subtractive helix]] |
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|[[PartDesign_CompPrimitiveSubtractive|Create a subtractive primitive]] |
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|[[PartDesign_Workbench|PartDesign]] |
|[[PartDesign_Workbench|PartDesign]] |
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|IconL=PartDesign_SubtractiveLoft.svg |
|IconL=PartDesign_SubtractiveLoft.svg |
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|IconR=PartDesign_SubtractiveHelix.svg |
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|IconR=PartDesign_CompPrimitiveSubtractive.png |
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|IconC=Workbench_PartDesign.svg |
|IconC=Workbench_PartDesign.svg |
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{{GuiCommand |
{{GuiCommand |
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|Name=PartDesign SubtractivePipe |
|Name=PartDesign SubtractivePipe |
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|MenuLocation=Part Design → Subtractive pipe |
|MenuLocation=Part Design → Create a substractive feature → Subtractive pipe |
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|Workbenches=[[PartDesign_Workbench|PartDesign]] |
|Workbenches=[[PartDesign_Workbench|PartDesign]] |
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|Version=0.17 |
|Version=0.17 |
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# Press the {{ |
# Press the {{Button|[[Image:PartDesign SubtractivePipe.svg|24px]] '''Subtractive pipe'''}} button. |
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# In the '''Select feature''' dialog, select a sketch to be used as first cross-section and click {{ |
# In the '''Select feature''' dialog, select a sketch to be used as first cross-section and click {{Button|OK}}. |
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#* Alternatively, a single sketch can be selected prior to pressing the Subtractive pipe button. |
#* Alternatively, a single sketch can be selected prior to pressing the Subtractive pipe button. |
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# In the '''Pipe parameters''' under '''Profile''', press the {{ |
# In the '''Pipe parameters''' under '''Profile''', press the {{Button|Object}} button. |
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# Select the sketch to be used as path in the 3D view: |
# Select the sketch to be used as path in the 3D view: |
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#* Alternatively, edges of the body can be selected by pressing {{ |
#* Alternatively, edges of the body can be selected by pressing {{Button|Add Edge}} and selecting edges in the 3D view. |
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# To use more than one cross-section, under '''Section transformation''' set the Transform mode to ''Multisection''; press {{ |
# To use more than one cross-section, under '''Section transformation''' set the Transform mode to ''Multisection''; press {{Button|Add Section}} then select a sketch in the 3D view. Repeat for each additional cross-section. |
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# Set options if needed and click {{ |
# Set options if needed and click {{Button|OK}}. |
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==Options== <!--T:7--> |
==Options== <!--T:7--> |
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'''Section Transformation''': |
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* Select '''Constant''' to use a single profile |
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* Select '''Multisection''' to use multiple profiles |
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'''Section Orientation''': |
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* Standard |
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** This keeps the cross section shape perpendicular to the path. This is the default setting. |
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* Fixed |
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** Orientation set by first profile and constant throughout. This deactivates the alignment to the path normal vector. That means that the cross-section shape will not rotate with the path. Sweep along a circle to see the effect. |
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* Frenet |
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** Create minimum possible twisting of profile. For more info, see [https://en.wikipedia.org/wiki/Frenet%E2%80%93Serret_formulas Frenet-Serret Formulas] |
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* Auxiliary |
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** Specify secondary path to guide pipe. |
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** For each point {{Emphasis|P}} along the sweep path, there will be a corresponding point {{Emphasis|Q}} on the auxiliary path. |
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** As the profile is swept, it will be transformed such that the {{Emphasis|PQ}} line is the normal of the sweep path. |
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** If {{Emphasis|Curvelinear equivalence}} is set, then the {{Emphasis|Q}} points are scaled proportionally along the sweep path, regardless of is length. |
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* Binormal |
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** Specify binormal vector in X, Y and Z |
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'''Corner Transition''' |
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* Transformed |
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* Right |
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* Rounded |
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==Properties== <!--T:8--> |
==Properties== <!--T:8--> |
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{{Docnav |
{{Docnav |
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|[[PartDesign_SubtractiveLoft|Subtractive loft]] |
|[[PartDesign_SubtractiveLoft|Subtractive loft]] |
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|[[PartDesign_SubtractiveHelix|Subtractive helix]] |
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|[[PartDesign_CompPrimitiveSubtractive|Create a subtractive primitive]] |
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|[[PartDesign_Workbench|PartDesign]] |
|[[PartDesign_Workbench|PartDesign]] |
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|IconL=PartDesign_SubtractiveLoft.svg |
|IconL=PartDesign_SubtractiveLoft.svg |
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|IconR=PartDesign_SubtractiveHelix.svg |
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|IconR=PartDesign_CompPrimitiveSubtractive.png |
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|IconC=Workbench_PartDesign.svg |
|IconC=Workbench_PartDesign.svg |
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}} |
}} |
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Revision as of 11:37, 20 August 2021
PartDesign SubtractivePipe |
Menu location |
---|
Part Design → Create a substractive feature → Subtractive pipe |
Workbenches |
PartDesign |
Default shortcut |
None |
Introduced in version |
0.17 |
See also |
PartDesign Additive pipe, PartDesign Subtractive loft |
Description
Subtractive Pipe creates a subtractive solid in the active Body by sweeping one or more sketches (also referred to as cross-sections) along an open or closed path. Its shape is then subtracted from the existing solid. SubtractivePipe is often used in connection with Part Helix and PartDesign ShapeBinder to create a thread; see the Thread for Screw Tutorial for details.
Usage
- Press the Subtractive pipe button.
- In the Select feature dialog, select a sketch to be used as first cross-section and click OK.
- Alternatively, a single sketch can be selected prior to pressing the Subtractive pipe button.
- In the Pipe parameters under Profile, press the Object button.
- Select the sketch to be used as path in the 3D view:
- Alternatively, edges of the body can be selected by pressing Add Edge and selecting edges in the 3D view.
- To use more than one cross-section, under Section transformation set the Transform mode to Multisection; press Add Section then select a sketch in the 3D view. Repeat for each additional cross-section.
- Set options if needed and click OK.
Options
Section Transformation:
- Select Constant to use a single profile
- Select Multisection to use multiple profiles
Section Orientation:
- Standard
- This keeps the cross section shape perpendicular to the path. This is the default setting.
- Fixed
- Orientation set by first profile and constant throughout. This deactivates the alignment to the path normal vector. That means that the cross-section shape will not rotate with the path. Sweep along a circle to see the effect.
- Frenet
- Create minimum possible twisting of profile. For more info, see Frenet-Serret Formulas
- Auxiliary
- Specify secondary path to guide pipe.
- For each point P along the sweep path, there will be a corresponding point Q on the auxiliary path.
- As the profile is swept, it will be transformed such that the PQ line is the normal of the sweep path.
- If Curvelinear equivalence is set, then the Q points are scaled proportionally along the sweep path, regardless of is length.
- Binormal
- Specify binormal vector in X, Y and Z
Corner Transition
- Transformed
- Right
- Rounded
Properties
- DataLabel: name given to the operation, this name can be changed at convenience.
- DataRefine: true or false. If set to true, cleans the solid from residual edges left by features. See Part RefineShape for more details.
- DataSections: lists the sections used.
- DataSpine Tangent: true or false (default). True extends the path to include tangent edges.
- DataAuxiliary Spine Tangent: true or false (default). True extends the auxiliary path to include tangent edges.
- DataAuxiliary Curvelinear: true or false (default). True calculates normal between equidistant points on both spines.
- DataMode: profile mode. See Options.
- DataBinormal: binormal vector for corresponding orientation mode.
- DataTransition: transition mode. Options are Transformed, Right Corner or Round Corner.
- DataTransformation: Constant uses a single cross-section. Multisection uses two or more cross-sections. Linear, S-shape and Interpolation are currently not functional.
Limitations
- Sketches used for cross-sections must form closed profiles.
- It is not possible to use a vertex as cross-section.
- A cross-section cannot lie on the same plane as the one immediately preceding it.
- To better control the shape of the pipe, it is recommended that all the cross-sections have the same number of segments. For example, for a pipe between a rectangle and a circle, the circle may be broken down into 4 connected arcs.
PartDesign
- 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
User documentation
- 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
- Hubs: User hub, Power users hub, Developer hub