W.E.T.??: [CAD_CAM_EDM_DRO] Re: motor sizing vertical slide EDM

Hello,

Were I you; I'd look to proven solutions used in commercial cnc
machines of all sizes...

BP's use an air cylinder to balance the knee.

Bigger machines--like the CINCY I retro'd--use a hydraulic cylinder
to do the same thing. But it's the head, not the knee.

Even small machines like the sieg minimill use a gas shock...

Commercial routers like a Gerber Sabre use springs...

There must be a reason these folks didn't use a counterweight?!?
(Actually several reasons, IMO.)

Hope this helps,

Ballendo

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@...> wrote:
>
> wthomas@... wrote:
>
> >Hi Jon, Marcus and All:
> > This is a very interesting discussion to me as I was
thinking of
> >putting such a counterweight on the head of a bed mill and the
effect
> >that it would have when pick drilling. What would happen if the
> >counterweight had through holes in it and set in a container of
90
> >weight oil? Do you think the oil would dampen it enough or am I
> >dreaming?
> >
> >
> I suspect this would work very well. If oil can't do it, grease
> certainly would.
>
> Jon
>