分享点设计思路
优化建模方法
Optimizing Part Design ApplicationOptimizing Part Design Application
Here are some tips and tricks for making your design easier.
How to Improve Update Operations
Generally speaking, using the manual update mode improves the
application performances. To activate this option, select Tools ->
Options, then in the Infrastructure -> Part Infrastructure category,
check Manual from the General tab.
When working on large parts, you can improve the time necessary for
updating your geometry by customizing the Undo command . What you need
to do is restrict the number of commands that can be undone for the
current CATPart document. To do so, just select Tools -> Options, then
in the General category, click the Performances tab. In the Stack size
field, enter 0 to make sure that only local transactions of the current
command can be undone. This considerably reduces the time of update
operations.
General Recommendations For Part Design Features
  ad, Pocket, Hole, Shaft, Groove
To improve update performances, especially if you are working on complex
and large documents, we recommend you to:
Set parameterized limits (Dimension option) for Pad, Pocket and Hole
features, as far as possible, instead of Up to Next, Up to Last, Up to
 lane, Up to Surface options.
Use closed profiles, as much as possible.
 atterns
Moreover, when working on patterns with a large number of instances, to
reduce update times :
Remember that applying the Keep Specifications Option is meaningless
when you set the Dimension option for the feature to be patterned.
We recommend you to create the feature to be patterned as well as the
pattern feature into a new Body, then assemble the new Body with the
 art Body. Patterns created in that way are not affected by the
updates of previous operations.
The following scenarios illustrate the traditional method, then the method
we recommend.
Traditional Method
The user designed an up to surface pocket, then patterned it: updates of
the document take a long time.
Recommended Method
Using the recommended method, the user created a new body, set a dimension
for the pocket, patterned it, then assembled the body to the Part Body:
update times are greatly reduced because the update process does not
re-compute the new body (the application performs calculations again if
the geometry within the body is linked to the geometry outside of the
body, which is the case of constraints or use edges for example).
How to Improve Performances when Editing
You can improve performances when editing features by acting on the
application visualization settings:
Activate the Only the current operated solid option available via the
Tools -> Options command, or just click the Only Current Operated Solid
icon available in the Tools toolbar. For more information on the
capability, refer to the Tree and Geometry View documentation of the
Customizing section.
Set values larger than the default ones to define 2d and 3D accuracy for
the geometry visualization. To do so, select the Tools -> Options
command, then in the General -> Display category, click the Performances
tab. Set the settings as explained in the documentation of the
Customizing Display section in the Infrastructure User's Guide.
When filleting, for example, it is often unnecessary to display smooth
edges. To hide them, you just need to check the invisible option. To
access it, select the Tools -> Options command, then in the General->
Display category, click the Visualization tab. The application lets you
choose between three visualization modes: visible, half-visible and
invisible.
How to Improve Performances when Using the Preselection Navigator
If you decide to use the Preselection Navigator for selecting hidden
elements, for example, you can improve the application performances by
checking the Display the preselection navigator after... seconds option
and setting the time delay to 2 or more seconds. To access the option,
select Tools -> Options, then in the General-> Display category, click
the Navigation tab. For more information, refer to the documentation of
the Customizing Display section in the Infrastructure User's Guide. |
发表于 2004-11-22 11:10:33
发表于 2004-11-22 20:56:42
