tessaperry•12d agoProlific Poster

I finally figured out why my tooloffs kept chattering

Was running a job on a Haas VF-2 last Tuesday making some aluminum brackets. The tooloffs on my 1/2 end mill were awful and I couldn't figure it out. Checked the holder, the collet, everything looked fine. Turned out my spindle speed was 200 RPM too high and the feeds were off by about 15%. Dropped the RPM and bumped the feed up and it cut like butter. Anybody else have a tiny adjustment fix a big problem?

4 comments

4 Comments

susan8111d ago

Question whether its really that serious like that, @charles836.

charles83612d ago

Did you check the runout on the holder too?

mark_chen6211d ago

Wait, you actually checked runout on a tool holder? That's next level OCD even for this crowd.

taylor_patel11d ago

Yeah "next level OCD" is pretty accurate honestly. I once spent a whole Saturday chasing 0.0002" of runout on a collet holder for a job that had a 0.005" tolerance. Took the thing apart and cleaned it three times, swapped collets, checked the spindle bore, the whole deal. Finally got it down to 0.0001" and then realized I'd been working on the wrong tool holder for like an hour. Didn't even need that one for the job. So yeah, I feel this deeply. If you're not checking runout on everything you own, are you even trying?