||This task shows you how to insert a sweep
roughing operation into the program.
Sweep roughing is an operation
which allows you to rough machine parts by vertical planes.
To create the operation you define:
geometry of the part to machine
parameters of the machining strategy
tool to use ;only end mill
tools are available
for this operation,
- the feedrates and spindle speeds
- the macros.
Only the geometry is obligatory, all of the other requirements have a
- make the Manufacturing Program current in the specification tree if
you want to define an operation
and the part/area to machine at the same time,
- or select a machining feature from the
list if you have already defined the area to machine and
now you want to define the operation to apply to it.
Below we are going to see how to do the first of these.
Basic1.CATPart then select Machining > Surface Machining in
the Start menu.
Click Sweep Roughing
A SweepRoughing entity and a default tool are added to the
The dialog box opens at the geometry tab page
This page includes a sensitive icon to help you specify the geometry to be
The area that represents the part geometry is colored red indicating that
the geometry is required
for defining the area to machine. All of the other geometry parameters are
Click the red area in the
sensitive icon and select the part in the viewer.
Then double-click anywhere in the viewer to confirm your selection and
redisplay the dialog box.
Click Tool Path Replay
You will see that the top area of the part has been rough machined.
A progress indicator is displayed.
You can cancel the tool path computation at any moment before 100%
If a tool path cannot be
computed because of invalid faces,
an explicit warning message like this one will appear:
Each invalid face is highlighted in red, with an arrow
pointing on it.
This visualization is removed when you close the main
dialog box or
when you select Remove in the contextual menu.
Click OK in the Warning box to revert to the
main dialog box.
In the Geometry tab, a message Ignore invalid faces: No
You can either:
- close the dialog box.
When you reopen it, the Ignore invalid faces: No will not
- heal the defective geometry and restart the computation.
If it is successful the message Ignore invalid faces: No
- ignore the invalid faces. Click the text Ignore invalid
It will turn to Ignore invalid faces: Yes and the
computation will continue.
The message remains displayed as a warning.
||Be very careful when you choose to ignore invalid faces.
We recommend that you ignore only faces that will not affect the tool path.
Otherwise this may lead to defective tool paths.