Re: Vacuum table

--- In CAD_CAM_EDM_DRO@yahoogroups.com, alipavsky@c... wrote:

> Does anybody have advice on building a vacuum table?
>
> Thanks,
> Andrey

Hi Andry.
Some years ago I saw a small object that looked like a very large
pop rivet but with a spring loaded ball at the top of the " T "
end. I will see if I can post a crude pic of it in the Photo
section. I think these were inserted into the table so that the top
was flush with the table and the ball slightly protruding and the
bottom was in line with one of the gaps/paths in the table connected
to the vacuum. When the job was placed onto an array of these
things, the ball would be pushed down and allow the vacuum to suck
on the job (or atmospheric pressure to act on it). The ones that
wern't touching had enough spring pressure to overcome the vacuum
and so not leak.
I would love to be able to put you onto some of these but I have
been trying to find some for about 1 1/2 years now with no luck.
All the other tables out there seem to use some sort of rubber
gasket to isolate where the part is held down.
I would post a small drawing of it in the photos section but I can't
find the ADD Photo button anywhere on the page or the link to
download the 205K software prog to do this. Why is it always so
darn hard to do something simple???

Warm regards
Richard.