On Thu, 18 Apr 2019 at 01:22, Gene Heskett <ghesk...@shentel.net> wrote:
> On Wednesday 17 April 2019 15:06:02 Chris Albertson wrote: > > [...] > > > > But if maybe you lock the spindle and turn the nut. > > This is the case, except you are turnbing the nut by using the xy > steppers to drive the carousel which is turning the nut. > > > Then your spindle > > lock needs to have a torque gauge fitted. The gauge is either a > > spring and switch or a load cell. The switch is much easier to > > interface with. <https://lists.sourceforge.net/lists/listinfo/emc-users> > Hi Gene To recap; small steppers 'drive' the carousel around to tighten the motor. Bad idea. Here's a different way of looking at it; Keep the current stepper arrangement, but drive the carousel instead, with a windscreen wiper motor. You now have as much torque as you like in the carousel. Add a reduction drive if you like. If you mount this under the bed you can go to town on it. The process would be to move into tool position, Z down, then either track the motion of the carousel, or disable the stepper drives and let them coast as the carousel takes the spindle with it as it loosens/tightens. Once you've reached your target Amperage on the motor, stop, and Z up. The X,Y is now a 'don't care', so home the machine. You then further rotate the carousel to home with a single switch so it's always ready. Regards Roland _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
