Some tecnical questions...

Hi!!! may be you can give me a hand.. :)

1) I`m making a 5 axis mill for work soft materials. I`m planing the machine with a 10mm/turn screw and 2000microsteps/turn configuration stepper motor. Do you think that is posible to get 10000mm/minute using a Gecko driver (Or in other words: 1000 RPM in a stepper motor) ??? Which percentage from the holding torque you think I woul use at 1000RPM - In an optimized Sanyo-Denky motor?

2) I will use 5 steppers with 4amp/fase (Especificated in serial conection - 4 cables) and 60V. The power supply current is: 5(motors) x 4(amp/fase) x 0,7071(Sin-Cos) x 2(Fases) = 28 Amp ????

Regards!
Tiwanacote


turbulatordude <dave_mucha@...> escribió: There are some spray waxes that you can use for that.

Dave

--- In CAD_CAM_EDM_DRO@yahoogroups.com, gary <garyclick@...> wrote:
>
> Suggest that you consider painting the screw with a coat of enamel
> before casting the nut. Coat the outside of the painted screw with
the
> mold release and after removing the cast nut clean off the paint.
This
> should give enought clearance for the nut to operate.
>
> gary
>
> Mike Pogue wrote:
>
> > I cast some bearings around some socket head shoulder screws this
way...
> > They seemed to work OK, although it was a bit messy. The bearings
ended
> > up being quite tight.
> >
> > I used West Systems Epoxy (105/205) with 423 graphite powder,
> > and a MS122AD PTFE release agent. I tried several ratios
> > of graphite, and they all seemed to work pretty much the same.
> >
> > I thought about also casting a zero backlash feednut, but I
figured
> > that the natural small tolerances in the threads (I'm not using
> > a precision leadscrew) would result in too much binding.
> >
> > HTH,
> > Mike
> >
> > Jon Elson wrote:
> > > efraimbarkbit wrote:
> > >
> > >>What about making a batch out of: quality epoxy resin, graphite
powder
> > >>and atomized (at least very fine!)PTFE? Any ideas on
proportions etc.?
> > >>I can get all of the above within reasonable financial limits,
and
> > >>could do a trial run of let's say 10 batches for making
zerobacklash
> > >>feednuts. It should be possible to make something similar to
> > >>Mogliceputty (or injectable Moglice)
> > >
> > > Graphite can be quite abrasive, depends on how it is made.
> > > Moglice has Molybdenum diSulfide, not graphite, as the
> > > lubricating element.
> > >
> > > Jon
> > >
> >
> >
>
>
>
> [Non-text portions of this message have been removed]
>






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