So i did pick up this Haas shell mill and these inserts i want to use on Aluminum. I never appreciated how exact and precision machining is until i got the PM728 and these tools in my hands. I cant wait to keep learning how to chase precision.
Now how the heck to i figure out what RPM to run it? I am on a PM728VT just hand feeding (no power feed yet).
I have seen formulas like
Aluminum = 150 Surface Feet/Minute
so i take (150 x 4) / Diameter of Tool = RPM of tool
example:
150 x 4 / .5 = 1200 RPM
how do i calculate the RPM for these carbide cutters? It is very confusing on the Haas Speeds and Feeds chart. I know carbide needs to go "faster".