I have a FADAL 3016 1996 I believe. I have not had issues in the past but the machine is fairly new to me.
Today after 8+ hours of deep hole drilling and other operations, interpolation, and tapping. The Z-Axis drops a little when it rapids down. So during G83 now it will jump down a a few thou maybe even ten after the rapid down into the material before it feeds. It is very hard on the tooling and one of the drills is a .96 so it stopped the spindle when it did this little jump. Odd thing is it ran fine all day then just started doing it at the end of the day. No program or setup changes.
I have been searching but have not found similar issues online.
Thanks,
Caleb