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You can split a body with a plane, face or
surface. |
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Open the
Split.CATPart document. |
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Click Split
.
The Split Definition dialog box is displayed.
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Select a plane, a face, or a surface as a splitting
element.
An arrow appears indicating the portion of body that
will be kept. Only the intersected pad will be split.
If the arrow points in the direction that is not satisfactory, you can
click it to reverse the direction.
Avoid using input elements that are tangent to each other since this may
result in geometric instabilities in the tangency zone.
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In the Extrapolation Type
list, select any of the following:
- None:
Splits a solid when a splitting element intersects the free
edges of a solid. By default, this option is selected.
- Tangent:
Extrapolates the splitting element tangentially and splits a
solid. You can use this option when the splitting element is
too short to intersect any of the faces of the solid to
split.
- Curvature:
Extrapolates the splitting element in a curvature and splits
a solid. You can use this option when the splitting element
intersects at least one of the face of the solid to split.
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Click OK.
Material has been removed, but only one pad is split. The other one is
unchanged because the surface did not intersect it. The specification
tree indicates you performed the operation.
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If you select the Tangent or the
Curvature as the extrapolation type, the material is removed after
the splitting element is extrapolated to cut the solid completely.
Extrapolation Type: Tangent |
Extrapolation Type:
Curvature |
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The Split command simplifies the geometry. The
joined faces having same planar or surface support are merged.
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Splitting Elements
If the splitting element is:
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A surface or a non-planar face, it
must intersect the element to be cut before being selected, otherwise the
split feature will be generated but no material will be cut as shown in
the example below:
The cutting element is a trimmed planar surface which does not intersect geometry.
Whatever the direction pointed by the arrow, the split will be performed successfully: no error
message will be issued but no material will be split. The geometry
will remain unchanged.
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A plane or a solid's planar face which does not intersect
material, the operation is performed even if the result is null.
The cutting element is a plane which does not intersect geometry.
The split will be performed successfully: no error
message will be issued but all material is removed. There is no more
solid geometry.
If the direction is reversed, no error message will be issued and no
material will be split. The geometry will remain unchanged.
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Contextual Commands
Contextual commands creating the splitting
elements you need are available from the Splitting Element
field:
- Create Plane: for more information, see
Creating Planes
- XY Plane: the XY plane of the current coordinate system
origin (0,0,0) becomes the splitting element.
- YZ Plane: the YZ plane of the current coordinate system
origin (0,0,0) becomes the splitting element.
- ZX Plane: the ZX plane of the current coordinate system
origin (0,0,0) becomes the splitting element.
If you create any of these elements, the application then displays the
corresponding icon next to the Splitting Element field. Clicking
this icon enables you to edit the element. |
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Hybrid Design
When adding a surface-based feature or a surface feature
modifying another surface-based feature or surface belonging to the same
body, Part Design features based on that second feature then reference the
new added feature. In other words, a replace operation is automatically
performed. Let's take an example. |
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Open the
AutomaticReplace.CATPart
document. |
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Double-click Split.1 and note that this feature
references Extrude.1.
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Define Extrude.1 as the current object using Define
in Word Object.
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Go into Shape Design workbench and create an Edge Fillet
onto the faces of Extrude.1 using Edge Fillet
.
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If required, update Split.1 (local update).
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Double-click Split.1 and note that it now references
EdgeFillet.2.
This behavior differs from what happens in a non-hybrid design
environment. In a traditional environment, Split.1 would not have
been affected by the insertion of EdgeFillet.2. and would still reference
Extrude.1.
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