BT Fabrication
Titanium
- Joined
- Nov 3, 2019
- Location
- Ontario Canada
So been having an issue ramping down cut into aluminum, and in the corners it occasionally chips a tooth at the end of a 1/2" wide slot.
running it dry and just air blast.
What does everyone else use for coatings, coolant or no coolant, specific brands of end mills that have worked well.?
the slot is just a through slot in 1/2" thick aluminum and ramping spiral slotting in a 1" long slot x 1/2" wide, just wondering if my angle (2 degrees)into the material wasn't deep enough as it was trying to roll aluminum in front of the cutter. was getting vibration at higher speeds, so i was running it at 3000rpm which might be a little fast for the 18.8 IPM and about 0.0032 per tooth 3/8" 3 flute uncoated
im thinking it might be rubbing a bit, but not 100% sure.
endmill specs were about 5600rpm at 37.6IPM in slotting.
only thing I know was that at 3300 RPM it was worse and increasing feed didn't help.
next thing i can think is drop rpms lower to get a thicker chip
running it dry and just air blast.
What does everyone else use for coatings, coolant or no coolant, specific brands of end mills that have worked well.?
the slot is just a through slot in 1/2" thick aluminum and ramping spiral slotting in a 1" long slot x 1/2" wide, just wondering if my angle (2 degrees)into the material wasn't deep enough as it was trying to roll aluminum in front of the cutter. was getting vibration at higher speeds, so i was running it at 3000rpm which might be a little fast for the 18.8 IPM and about 0.0032 per tooth 3/8" 3 flute uncoated
im thinking it might be rubbing a bit, but not 100% sure.
endmill specs were about 5600rpm at 37.6IPM in slotting.
only thing I know was that at 3300 RPM it was worse and increasing feed didn't help.
next thing i can think is drop rpms lower to get a thicker chip