PartDesign "Аддитивный профиль по траектории"

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This page is a translated version of the page PartDesign AdditivePipe and the translation is 47% complete.
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PartDesign AdditivePipe.svg Аддитивный трубный профиль

Системное название
PartDesign_AdditivePipe
Расположение в меню
PartDesign → Create an additive feature → Аддитивный трубный профиль
Верстаки
PartDesign
Быстрые клавиши
Нет
Представлено в версии
0.17
См. также
Аддитивный профиль, Субтрактивный трубный профиль

Описание

Additive Pipe creates a solid in the active Body by sweeping one or more sketches (also referred to as cross-sections) along an open or closed path. If the Body already contains features, the additive pipe will be merged to them.

PartDesign AdditivePipe example.svg

On the left: cross-sections (A) and (B) to be swept along path (C); resulting Additive pipe on the right.

Применение

The example image above shows two different cross-section shapes. The text below will describe the procedure with a single shape only. This will achieve a part with the same cross-section along the whole path.

  1. Create two separate sketches;
    • one for the path, e.g two lines connected by a curve as in the image above,
    • one for the cross-section shape, e.g. a circle as the first shape in the image above. Instead of a sketch also the face of a 3D object can be used. (introduced in version 0.20)
  2. Arrange the two shapes in 3D correctly. It is recommended to place the origin of the cross-section onto the line of the path. The two sketches should in most cases be orthogonal. This can be done with the 'Map Mode' function (make both sketches visible with Space. Select the cross-section sketch. Select Properties/DataTab/MapMode. Click the appearing ... button at the right side. In the Attachment Dialog select a vertex of the path sketch and select the correct mode to get the two sketches aligned correctly).
  3. Press the PartDesign AdditivePipe.svg Additive pipe button.
  4. In the Select feature dialog select a sketch to be used cross-section and click OK.
    • Alternatively, a sketch or a face of a 3D object (introduced in version 0.20) can be selected prior to pressing the Additive pipe button. In that case you will not get a "Select feature' dialog.
  5. In the Pipe parameters under Path to sweep along, press the Object button.
  6. Select the sketch to be used as path in the 3D view. In this case the whole sketch will be used as path.
    • Alternatively, single edges of the sketch can be selected by pressing Add Edge and selecting edges in the 3D view. Note that you must press the Add Edge for each edge again. You must select a continous line with no branches.
  7. The other settings should work with the default settings in most cases.
  8. Click OK.

To use more than one cross-section, start with the first cross-section sketch as described above. Then 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.

Опции

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
  • 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 Curvilinear is set, then the Q points are scaled proportionally along the sweep path, regardless of it's length.
  • Binormal
    • Specify binormal vector in X, Y and Z

Corner Transition

  • Transformed
  • Right
  • Rounded

Свойства

  • ДанныеLabel: name given to the operation, this name can be changed at convenience.
  • ДанныеRefine: true or false. If set to true, cleans the solid from residual edges left by features. See Part RefineShape for more details.
  • ДанныеSections: lists the sections used.
  • ДанныеSpine Tangent: true or false (default). True extends the path to include tangent edges.
  • ДанныеAuxiliary Spine Tangent: true or false (default). True extends the auxiliary path to include tangent edges.
  • ДанныеAuxiliary Curvelinear: true or false (default). True calculates normal between equidistant points on both spines.
  • ДанныеMode: profile mode. See Options.
  • ДанныеBinormal: binormal vector for corresponding orientation mode.
  • ДанныеTransition: transition mode. Options are Transformed, Right Corner or Round Corner.
  • ДанныеTransformation: Constant uses a single cross-section. Multisection uses two or more cross-sections. Linear, S-shape and Interpolation are currently not functional.

Notes

  • To better control the shape of the pipe, it is recommended that all cross-sections have the same number of segments. For example, for a pipe between a rectangle and a circle, the circle should be broken down into 4 connected arcs.
  • You can pipe from or toward a single vertex from a sketch or the body. introduced in version 0.20
  • When you select a vertex as section, it must be the last section of the pipe. Otherwise the pipe body would consist of two solids connected at a single point. This would violates the CAD kernel's definition of a 3D object. You can change the order of the sections by dragging them in the list.
  • The path can only be from a single sketch, feature or ShapeBinder. In case you want to sweep along several edges from different sketches, use a PartDesign SubShapeBinder.svg SubShapeBinder.
  • The path must not contain branches or T-junctions etc. Loops are allowed.
  • It can lead to issues if the cross-section is not perpendicular to the path in 3D.
  • A cross-section cannot lie on the same plane as the one immediately preceding it.
  • The cross-sections must not contain disjoint or crossing loops.