On 7 November 2014 11:55, Marshland Engineering <[email protected]> wrote: > so 10-20 watts would be enough. Why does my Anilam lathe and SWI mill use 2 kw > motors ?
It is probably to get the steady-state constant torque rating required for the cutting forces. Lets consider a cut with the max cutter that the spec says (32mm) making a 6mm deep slot. http://zero-divide.net/?page=fswizard calculates cutting forces. That suggests 450 rpm, 172mm/min feed and 1800N cutting force. That is still only 5W of power required, but the ball-screw torque is now 9.0 Nm (1300 oz-in) and suddenly your motors look undersized. (you should be able to make the cut at 3mm DOC and a slower feed, though) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
