I have a part that has a 2.5 dia hole in it I am using a 3/4 end mill to turn this hole into a 2.515 square I am rampaging down through the square at about 3 deg making 6 passes this is around .05 depth of cut my problem is when I turn the corners the machine thumps really hard in the corners at any feed rate above 60 ipm so bad at 280 ipm that the machine shakes the floor
I have two machine just a like and this same program works great on one but not the other and both machines are in about the same mechanical shape no back lash machines are not loose All the pads are tight to the floor same fixture used on both machines both machines are KIWA”S And both have a Fanuc 18i control is there any parameters that can be adjusted to correct this ?