Re: Table Construction - floor anchors

Hi Ken,

The heavy machine with equally heavy table may not be a problem that
requires floor mounting.

in fact, rubber isolators may be bettter at keeping the shop quiet
than a hard connection.

My first suggestion is to design the table with isolators and
levelers. the table should be dead level or at least the mounting
points should be. then your machine should be leveled on that.

They make isolators that can be bolted so some prudent selection of
the mount will offer you some choices on the final installation.

But, the questions is how much mass will be moving with this thing ?
if you are doing fast rapids, what will that mass be as compared to
the weight of the table ? is may be so slight that the mass will not
have much effect.

Mariss mentioned some time ago that his pick and place machine has
multiple axises and some unimaginable rapids, but if I remember
correctly it is sitting on isolators only.

Dave







--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Kenneth Emmert"
<mds1878@c...> wrote:

>
>
>
> You Folks got me interested in this hobby!!! I decided
> to do a router/engraver as a first project. Found an
> X/Y axis table out of the semiconductor industry on
> Ebay. It arrived today, all 262 lbs of it.
> Movement parameters are approximately 13" x 26" on 23mm
> NSK slides and 16mm 4 tbi ball screws. Condition is
> excellent and build out is of 3/4 and 1" aluminum.
> Y-axis is about 75 lbs in weight. My question on table
> building is do I need to floor anchor the table?
> Likely I will use 3" square steel tubing for stand
> construction. Base plate on X Y axis is 3/4" plate 18"
> x 40". I am concerned about vibration and movement!
> Also suggestions on servo motors for this unit they
> have been removed. I was told it originally had
> compumotor servo's the motor connectors are still
> attached to the ball screws 3/8" shaft.
> I have a gantry to build and the Z-axis slide and servo
> are sitting on my shelf. Limit switches are already
> installed on the unit. I am attempting to come out
> with a fair amount of precision from this unit.
>
> Thanks for any suggestion,
>
> Ken
> Kenneth A. Emmert
> Spokane, WA