Fusion
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I've found an unexpected problem when using stock to leave whilst doing an internal grooving operation which has the potential to cause a crash.
Unfortunately due to NDA's I can't share the file but I'd imagine it would be consistent and easy enough to recreate.
This is the problem I've found:
The grooving tool is a bit of a bodge - a home made tool as I couldn't get something off the shelf quickly enough. As such some of the clearances aren't great. To avoid issue I've set the inner radius as only a few mm from the opening to the part. There's a lot of material to remove so I'm doing it in a few operations so I can clear out chips etc as the part geometry means they'll likely pack up in the bore. As such I've set stock to leave at 15 mm radially for the first op, 5 mm for the second op and 1 mm for the pre-finishing op where I'll swap out the insert and take two finishing passes to get the size bang on.
The thing I've noticed is for the first op the tool starts at the inner radius value but then moves down in X before doing a rapid move into the part (see screenshot below). The amount it moves in X appear to be tied to the stock to leave - it moves from 104 mm to 77.75 mm which is roughly the stock to leave (diameter value).
I'm assuming this is a bug in the way Fusion generates the toolpaths and is looking at the stock to leave value when it shouldn't be.
@info99H4D Which strategy is this: legacy groove, groove roughing or groove finishing?
Regards,
Akash Kamoolkar
Software Development Manager
@info99H4D you can try groove roughing / groove finishing to see if you get better results. We have fixed a lot of issues with the legacy strategy in these two newer ones.
Regards,
Akash Kamoolkar
Software Development Manager
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