My first perfect run on the Haas VF-2 this morning

I finally got a whole batch of 30 aluminum brackets to come out within 0.002 inches of each other. I have been fighting tool chatter for weeks on this particular job. It turned out my feed rate was just a hair too high for the end mill I was using. I slowed it down from 40 IPM to 35 IPM and it was like magic. The surface finish came out so smooth I didn't even need to deburr them. My lead hand Dave came over and said 'now that is what I like to see.' Has anyone else found a small speed adjustment suddenly made their parts come out way better?

3 comments

3 Comments

wendy13123d ago

Small changes make all the difference, it's crazy how one number shift can fix everything.

kimr7423d ago

Oh man that is the BEST feeling when you finally crack it! Same thing happened to me last month on a stainless job - I dropped my feed just 5 IPM and the difference was NIGHT and DAY, just like what you found with your Haas. @wendy131 is totally right about how one little number can turn a headache into a perfect run.

tara64223d ago

Speaking of little changes, that reminds me of the time I was trying to dial in my old Bridgeport for a specific run. I spent three days tearing my hair out over a finish issue and it turned out I had .003 of runout in my collet I was ignoring. Once I swapped it out everything was perfect. It is wild how often we think it's the big stuff when it's actually just that tiny little thing you keep skipping. Did you check for any tool holder runout before you messed with the feed?