we are machining mild steel plates of thickness 3 inches. the size of the job vaires from 300x400mm to 800x800mm.. we are doing it in a vertical cnc machine.
the parameters are...:
- 0.65mm depth of cut
32mm dia of the tool
8000mm/min feed rate
I am getting a tool life of around 2 hours per cutting edge and the tool has 3 cutting edges..
my problem is that my job bends... some times it even bends by 3-4mm. the job is clamped with a magnet.
we do only dry machining as when we tried wet machining the tool life reduced a lot.
we are using tools from a european company called SECO.