I'm using Featurecam 2007 (V13.1.0.28) to produce code for a new to me Beaver TC20 lathe which is even older than the software ! (1989). It has a Sinumerik 820T controller, and I'm using a slightly tweaked post processor for the Sinumerik 810T as they are code compatible.
Testing using a simple single arc to form a domed end on a bar, all goes well roughing, but on the finishing pass the tool is traversed 6.6 mm beyond the centreline, then engaged, resulting in an upward force on the insert until it has cross the centreline back into safe territory. This of course chips the insert.
The Featurecam simulation clearly shows the issue :
Attachment 400742
Here is the code segment:
Attachment 400744
And the chipped insert:
Attachment 400746
Video here
I don't seem to be able to find any settings to prevent this so any suggestions would be appreciated