Backlash comp on old Haas vs. newer Fanuc controls, which way do you dial it in?

I used to always split the difference and run a test cut three times to find the sweet spot on the old machine at my last shop, but now on this newer one I just bump it .001 at a time and check the backlash parameter directly from the manual, does anyone else have a preferred method that just works better for them or am I overthinking this?

3 comments

3 Comments

rubyk2629d ago

I used to always split the difference" - that's exactly what I did for years on my old Haas. I do the same .001 bump method you're using now on my newer Fanuc, and it saves me so much time versus running test cuts over and over.

mark_carr729d ago

Learned that trick the hard way after accidentally making a .005 cut and spending an hour twiddling my thumb while it air-cut back to size on my old machine. Now I call my .001 bumps "retirement insurance" since they keep me from getting fired before I can actually retire. Guess some of us just gotta learn by breaking stuff first.

the_harper29d ago

Ha, "retirement insurance" - I like that. I've got my own version of that called "lunch insurance" since I'd rather spend my break eating than watching an air cut. I still have nightmares about the time I tried to get clever and do a .003 finish pass on a brand new jaw set. That "quick final touch" turned into a geometry lesson real fast when I realized I had to re-indicate everything. These days I treat every .001 move like it's my last one, because honestly with my luck it might be.