Re: [CAD_CAM_EDM_DRO] Re: 300 IPM - machine resolution and encoder slots

I am getting 40KHz circular interpolation with CNCPro on a 100MHz 486.
However, the constant contouring feature fizzles out at about 10KHz.

I have purchased an AMD 450MHZ to replace the 486 and expect this will cure
the hiccups. I have also purchased all the parts to build that wonderboard
we talked about four months ago - they're piled next to the AMD computer
collecting dust. Production comes first, I guess. In the mean time, it
runs great with constant contouring turned off.

Doug Harrison

----- Original Message -----
From: Carlos Guillermo <carlos@...>
To: <CAD_CAM_EDM_DRO@egroups.com>
Sent: Sunday, July 16, 2000 10:36 AM
Subject: RE: [CAD_CAM_EDM_DRO] Re: 300 IPM - machine resolution and encoder
slots


> Alvaro -
>
> I think I heard that both IndexerLPT and Doug Yeager's CNCPro could output
> 100 kHz on a Pentium 233 or thereabouts, even during circular
interpolation.
> I'm pretty sure they don't expect these rates on a 50 MHz 486. These are
my
> first two choices for when I finally get my iron together, since they both
> have lookahead capabilities, which is important at 300 IPM.
>
> Carlos Guillermo
> VERVE Engineering & Design
>
>
>
> > -----Original Message-----
>
> Alvaro Fogassa [fogassa@...] wrote:
>
> > > >Carlos,I had problems trying to get my 486 50 to do 20.000 step/s.
> > in the past,(on my sherline,23tpi screws)moving 2 axis at the same
> > time.It would do it ok moving one axis at the time,but 2 axis it
> > losses steps.T'll this day I don't know if was the computer or the
> > controller(Camtronic's) or software.Iwas forced to work with 12"/min
> > maximum.
> > That happens when cutting circles for exemple.Industrial cnc's also
> > have a limit on circular interpolation of about 50 to 100"/min.
> >
>
>
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