Ok, I do not get it. How the heck do you calculate how fast to cut, turn feed, etc. I've been trying tables and formulas and basically just destroying stuff before tackling each project.
I've read a dozen pages on-line and read some of the responses here in the archives and I think there is a fundamental concept or group of constants that every person who knows how to do it assumes everybody else already knows when they explain it.
How do you calculate how fast to feed for a particular end mill?
Example, (CNC MILL) Material = aluminum Mill = .0625 (2 teeth carbide / could use tin coated or hss if it would work better) Radial depth of cut = ???? Axial Depth of cut = ???? Spindle Speed = ???? Feed Rate = ????
Limitations of the mill. Max RPM = 10,000 (Five speeds. More if I do not mind hanging the pulleys part way off the shaft) Max Plunge Rate = 10 (Z) ((Axis hangs if you try to go any faster) Max Feed Rate = 20 (X,Y) (Could probably go 30 as long as load was minimal) Holding Force of Stepper Motors = 280 ozs.
The idea is to find the fastest way to cut a pocket or du carving without breaking end mills, dulling them before the job is done, or having the machine bog down against axial forces. How can I plug in data like that to figure out what is going to work best. I'm tired of ruining work pieces and breaking mills to find out.
Then how do I plug in that data to calculate the same for a smaller or larger end mill?
With coolant?
Without coolant?