> > The pulleys coaxial with the rotation is a neat idea. > But how much gear-own do you need? > > I ran my BS0 with direct drive and a tiny little servo (1Nm?) and it > was pretty much OK. >
You tested the BS0 empty? What if there is a casting mounted in it so as to present an eccentric load? Also what if the machine operation places a force on the part that does not intersect the rotation axis? The motor has to hold the part rigid while it is being milled. OK I suspect the worm is not back drivable but I can imagine me wanting to make helix gear by turning the part while the cutter is cutting. The motor needs to move the part which could be unbalanced while it is being cut. I'm some months behind Gene on this project. I'm looking to buy a closed loop stepper for z-axis then place a stepper on a rotary table to create A-axis. I want to cut metal helical gears. > > > -- Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
