Feeds and speeds. Some tips for a newbie please!

[Chaz]

OK, I'll get a 2 flute uncoated from APT and see how it goes. The cutters I have are coated but I don't know what with.

The part I was machining is the bed of the machine, so no idea what grade it is. I just wanted it flat(er) and level.

Once I get the new 2 flute cutter, is 6k rpm and 500mm/min, dry, still in the right ball park for taking a shallow finishing cut at say 90% engagement?



Just for my own interest, if there is build up on the tips of the cutter, how does that erode the tip?


Thanks for the input!

What is the highest speed your spindle can rotate at?

[Richard]

What is the highest speed your spindle can rotate at?

Man this thread is getting confusing! LOL!

I don't know how fast it can go. I will have a look at see what it actually tops out at.

It's a Schneider altivar 12 VFC with a water cooled 2kw spindle.

[Dave_stoke]

Man this thread is getting confusing! LOL!

I don't know how fast it can go. I will have a look at see what it actually tops out at.

It's a Schneider altivar 12 VFC with a water cooled 2kw spindle.

Yes sorry richy I somehow derailed and hijacked your thread.

Sent from my F8331 using Tapatalk

[Richard]

Man this thread is getting confusing! LOL!

I don't know how fast it can go. I will have a look at see what it actually tops out at.

It's a Schneider altivar 12 VFC with a water cooled 2kw spindle.

I just tried 20k rpm. VFD says 326hz and spindle was going at 19600rpm.


This is what the bed looks like and what the finish was initially and after the tool degraded.