Finally stopped crashing taps after 3 years of guessing

Last week I had a job running 304 stainless on a Haas VF-2, and I kept breaking M6 taps every 15 parts. I tried different speeds, peck cycles, even changed coolant mix. Then a guy from the shop next door told me to check my peck depth, turns out I was going way too deep per step. I cut it from 3mm to 1.5mm and ran 200 parts without a single snap. Has anyone else had a simple adjustment fix a problem you fought for months?

2 comments

2 Comments

seana1424d ago

I mean, you were breaking taps every 15 parts and that's a big problem sure, but it sounds like you just had a really dumb mistake to fix. Three years of guessing and it was just peck depth? That's on you for not trying a smaller step earlier. I've seen guys chase worse issues for weeks and it's never that simple though.

sanchez.robin24d ago

Buddy of mine had the same deal with some weird chatter on a lathe, drove him nuts for six months. Turned out his insert was just a hair past its life and a fresh one fixed everything.