Mold Tools - Shut Off Surfaces
To cut a tooling block into two
pieces, you need two complete surfaces (a core surface and a cavity surface)
without any through holes. Shut-off surfaces close up the through holes.
You create shut-off surfaces after you create the parting lines. A
shut-off surface closes up a through hole by creating a surface patch
along one of the following:
When you create shut-off surfaces,
the software populates Cavity Surface
Bodies and Core
Surface Bodies with the appropriate surfaces. See
Mold
Folders.
To create shut off surfaces:
Click Shut-off
Surfaces (Mold Tools toolbar) or Insert,
Molds, Shut-off
Surfaces.
In the
PropertyManager, set the following options, then click .
Edges
You can select
edges manually. Select an edge in the graphics area, then use the selection
tools to complete the loop.
You can define
a parting line for a through hole in the Parting Line PropertyManager,
then select it here to define the edge of the shut-off surface for the
hole.
Knit.
Joins each shut-off surface into the cavity and core surfaces, so Cavity Surface Bodies and Core Surface Bodies
each contain one surface body. When cleared, the surface
patches are not
knitted into the cavity and core surfaces, so Cavity
Surface Bodies and Core
Surface Bodies contain many surfaces. You might
want to clear this option if you have a collection of poor quality surfaces
(for example, with IGES import problems), and want to manually analyze
and repair them after using the Shut-off
Surfaces tool.
Filter
loops. Filters out loops that do not appear to be valid holes.
If valid holes in your model are filtered out, clear this option.
Show
preview. Displays a preview of the patch surfaces in the graphics
area.
Show
callouts. Displays a callout in the graphics area for each loop.
You can click a callout to change a loop from Contact
to Tangent to No
Fill. For a Tangent loop,
you can click the arrow to change which faces are used for tangency. See
Shut-Off
Surface Fill Types.
Reset All Patch Types
Resets all the through hole surface patches to one of the following:
All
No-Fill .
All
Contact .
All
Tangent .
Only one Shut-Off Surface feature is allowed
in a model. Therefore, within the one feature, you must assign a fill
type of Contact, Tangent,
or No Fill to every through hole.