Finally figured out my roughing pass issue after 4 months of frustration

Last week I was running a job on our Haas VF-2 in Tampa and kept getting chatter on every roughing pass for aluminum parts. I tried different speeds and feeds but nothing clicked until I slowed down the chip load by 15% and switched to climb milling. Has anyone else had to back off the chip load way more than the book says to get a clean cut?

3 comments

3 Comments

miles_robinson2012d ago

Climb milling fixes chatter mostly because of tool deflection, not chip load.

betty_perry2412d ago

Preach, Lee - their "recommended" numbers are total garbage once your machine has any age on it.

lee68912d ago

The book says this, the book says that" - yeah the book never had to deal with a worn out spindle bearing at 8pm on a Friday (not that I'm speaking from experience or anything). I swear those recommended chip loads are written by people who've never actually run a machine.