Re: [CAD_CAM_EDM_DRO] Re: Ball screws

Actually in the real old days of CNC I was involved in a project where
that option wasn't offered. The operators where forced to do a little
multiplication to get the numbers right on one axis. That is one axis
had a gear reduction beyond what the controller was set up for. But
those where the days when a 600KHz processor was considered fast.

Dave

On Fri, 2005-02-25 at 14:29 +0000, m0nkey0ne wrote:
>
> And ... even if everybody's gearing was identical, you still have a
> huge variation in resolution of steppers. This has to be compensated
> for in software.
> Randy
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "David A. Frantz"
> <spinwizard@f...> wrote:
> > I've seen them advertised but really have no practical knowledge of
> > Kerks lead screw. Kerk actually makes lots of different lead screw
> > assemblies so I wouldn't be surprised if they had something new.
> A
> > talk with an applications engineer may help.
> >
> > As to lead your CNC coftware would have to compensate in some
> manner or
> > form as even if the lead is constant the encoders and the gearing
> are
> > likely to be different form machine to machine. Not a user of
> mach2
> > either so specifics can't be offered at this time. Generally you
> have
> > a way to specify counts per inch/mm someplace within the software.
> >
> > Thanks
> > dave
> >
> >
> > On Fri, 2005-02-25 at 01:31 +0000, ryan_kittredge wrote:
> > >
> > >
> > > Hello group;
> > > During some internet research I came across Kerk motion that has
> > > lead screws with anti backlash nuts that they claim to be less
> > > expensive and out perform real ball screws.
> > >
> > > I am interested if anyone knows anything about these and where
> good
> > > ball screw / lead screw suppliers are.
> > >
> > > I also noticed that a lot of ball screws do not have the
> > > standard .100" per rev lead that is the standard for the
> machines.
> > > Does the controller software like mach2 compensate for this?
> > >
> > > Thank you,
> > > Ryan
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
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> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a sister site to the CCED group, as many of the same members are there, for OT subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
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