PartDesign SubtractivePipe/tr

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Subtractive loft

Next: Subtractive helix

PartDesign

Menu location
PartDesign SubtractivePipe
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
Contents 1 Tanım 2 Usage 3 Options 4 Properties 5 Limitations

Tanım

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

VeriLabel: name given to the operation, this name can be changed at convenience.
VeriRefine: true or false. If set to true, cleans the solid from residual edges left by features. See Part RefineShape for more details.
VeriSections: lists the sections used.
VeriSpine Tangent: true or false (default). True extends the path to include tangent edges.
VeriAuxiliary Spine Tangent: true or false (default). True extends the auxiliary path to include tangent edges.
VeriAuxiliary Curvelinear: true or false (default). True calculates normal between equidistant points on both spines.
VeriMode: profile mode. See Options.
VeriBinormal: binormal vector for corresponding orientation mode.
VeriTransition: transition mode. Options are Transformed, Right Corner or Round Corner.
VeriTransformation: 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.

Subtractive loft

Next: Subtractive helix

PartDesign