Re: [CAD_CAM_EDM_DRO] hydralic bed control

Jerry Kimberlin wrote:

> dave engvall wrote:
> >
> > Hi,
> > I have an old horizontal mill with a hydralic bed. Has anyone tried
> > control of anything hydralic using a automotive power steering unit?
>
> A friend of mine made a dump bed for an old pickup truck and used
> a scrap power steering pump to operate the hydraulic cylinder.
> He couldn't quite dump 2500 lbs, but part of that was due to the
> placement of the cylinder. With this in mind, I don't see why a
> power steering unit wouldn't work. I suspect the control valves,
> etc. would be more of a concern.
>
> JerryK
>

The mill already has cylinders to control the x axis...1-30 "/min. Hydraliic pump, etc. I'm wondering if the steering control
valve can run the bed back and forth under cnc control. That is gear a servo motor to the (ex) steering column. I assume one will
use a glass scale as an encoder. Depending on how much dead space there is in the center of the control valve will (kinda)
determine pseudo backlash.

Dave