Re: replacing feed screw with a hydraulic cylinder

Thanks Ray,
I should have the machine here in a week or two, then I'll get
another look at the head. Any recommendations for a stepper for the
quill? From another post I gather that I should try to put a decent
PC on it, like maybe a 1Ghz machine, but maybe the old P90 will do
for setting it up. Any idea what has to be done on the x-y axis to
mount the ballscrews?

I've got some more info on the steppers I got with the machine:
Parker Compumotor brushless, coupled to 20:1 Textron cone drives.
Motor specs are 7000rpm max, 15A/45A stall current,6.51 Nm torque,
3.36Kw continuous (power?) and inertia is 2312g.cm sq.
In appearance these motors compare favorably to the ones I saw being
used in the 70's to prototype a Bridgeport CNC using cog belt drives
and something like a 3:1 reduction. That system worked pretty well
for the times.

So would these be suitable motors for the Moog? If so, what can I
get to drive them with?

Jim

> Hi Jim
>
> Yes the quill can easily be fitted with ball screws because there

is a

> yolk that extends parallel to the x axis from each side of the

quill.

> That's where the air-over-hydraulic cylinder for z is attached.
>
> Ray