Hey guys...while on the rake issue...need some help on this one....
am working on a 15mm end mill solid carbide, six flute and corner radius of .40mm..... everytime we try to test it...it does fine for some jobs and then starts sparking which is not acceptable to the customer!! any leads on that,,,is it cos of the rake on the end face...i keep aroun 5deg, then i also have an axial rake at the end face of 2 1/2 deg... the corner radiu has just one relief ie 10deg...!!!
need some information on how much rake is good on an end mill!!! |