First I am newb in CNC but I am learning so dont beat me too hard
OK I tried to mill some aluminium with my gantry router and at all I am pretty satisfied with hole result but its not perfect
When i cut the detail bit leave not smooth surface, You can see on pics
Bit is 1/8 inch and spindle head is Kress 1050 max RPM's are 32000
Bits are 1/8" Carbide 4 flute endmills from Kyocera Tycom and
1/8" 2 flute carbide endmills made by Kemmer Precision
I tried to mill by chip load calculation.
Usualy carbide tools have chip load for Al .0010/ SFM 600-1200
My gantry top speed is 37ipm
So I'm calculated a litle bit and got recommended RPM's from 18336 (RPM = (3.82 x SFM) / D)
By this spindle speed i need to archive feedrate IPM = RPM. x CHIP LOAD x F
it will be ~73IPM with 4flute and 2flute = ~36IPM
I am tried follow by calculations but results are similar with 2 flute endmill surface even worse by 36IPM, 4 flute leaving this surface what on picture on ~18000-20000rpm's even tried 10IPM on max RPM's ~32000
I tried climb cut, always used coolant and results are still similar with minor difference.
What I am doind wrong? Maybe recommend what settings to try?
Or no chance to archive better surface
Sorry for my bad english
