Hey Kong, Try increasing your feedrate and/or depth of cut to get it to chip better. It may also be the geometry of the insert. If I am correct, you should have a positive geometry insert to cut aluminum. How fast are you turning? You may want to try stick less of the boring bar out to reduce the chatter. You should only have about .100" or so longer than your longest "Z" depth. Anything longer is not good for anything.
Hope this helps. |