Re: [CAD_CAM_EDM_DRO] Re: Calcomp Plotter suitibility for XY

Alan Marconett KM6VV wrote:

> Makes me think of the "daisy wheel" printers I have been saving for 15
> years. Great servo motor (with funny encoder) and driver parts,

Alan;
couple years ago the company were I work scrapped all the digital terminal printers
they have one servomotor to drive the print carriage with a beautiful encoder in the
back of them the size was about 2" diameter by 8" inches long permanent magnet
have a guess who got most of them (about 20)
regards
mariano

>
>
> Alan
>
> Alan Marconett KM6VV wrote:
> >
> > Brad,
> >
> > The Calcomp plotter must have some fair sized steppers. I suppose one
> > could compute the x & y scales, and drive it like an HPGL plotter! Pen
> > UP/DN could run a stepper between two preset limits for Z. 15:1 might
> be
> > s.l.o.w., but OK for starters. Are you intending to drive a Sherline
> > mill, or your own xy table?
> >
> > "Heuver, Brad (B.R.)" wrote:
> > >
> > > I've recently scrapped out a Calcomp 1043GT plotter. It was
> able to
> > > be controlled with the joystick prior to scrapping, but always had
> pen
> > > related errors, and was given away by a local school in an obsolete
> computer
> > > related giveway. It has servo motors, with optical shaft encoders,
> and a
> > > relativly nice power supply, and servo control board. There are
> multiple
> > > ports for remote plotter control, and keyboard connections. The
> motors are
> > > equipped with a small, fine tooth gear, that drives a much larger
> gear in an
> > > integrated unit. They appear to have a ratio of at least 1:15 ++.
> > > Has anybody used a plotter like this for conversion to a CNC
> > > controled X/Y device, drill, O/A cutting torch, minimill... It
> looks like
> > > with the proper driver modifications it could be controlled directly
> from a
> > > serial cable, with no other electical hardware needed. I would have
> to get
> > > it out of fault mode, and able to take direct commands, probably with
> HPGL.
> > > ?
> > > What says the collective wisdom of the group?
> > >
> > > Brad Heuver
>
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