16992
« on: January 08, 2010, 05:58:09 AM »
The motor tuning sets the Max velocity, ie your rapid speed so you are wanting at least your max feed rate plus a wee bit more.
Its all trial and error, machine design and personal preference as to what is right. For example on my mill that has steppers I can get the rapids to 2500mm a min but the accel cant go over about 40 with that rapid. I can however drop down to about 2200mm/min and get the accel up to 120 or more. To me that is a much greater benefit as I will never need 2500 cutting steel and the increased accel makes code actually run faster so cuts cycle time. Another benefit to greater accel is less corner rounding in CV, although that never bothered me anyway as cutting metals (steels/stainless etc) feeds are not super fast.The machine is rigid enough to stand the higher accel but with a router you may have to lower the accel a bit as it may jump about and flex. So as I said, all trial and error and personal preference.
Hood