Re: Moog: Where are all the air valves?

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "blown_mgb_v8"
<jblackwood5@i...> wrote:

> I was nosing around in the control cabinet today and after seeing
> the bank of relays this thing used I expected to see just about as
> many air logic devices and interfaces between air and electric.
> Imagine my surprise to find only a few air solenoids in there!
> That's weird.
> On another note, the head didn't come equipped with a worm and
> pinion for sideways tilt, just a eccentric pin for centering and

not

> a very good mechanism at that. I've been cheerfully cutting down a
> worm and pinion out of one of the gear reducers that came on my
> servos to see if I can fit that to the head and I believe I can

make

> it work even though it's a bit big.
> Other good news, we sold the old house so now I have funding to
> build my workshop. It'll be a 40'x 60' metal building with 14'
> rafters. I hope to have it done by fall and have the Moog inside.
>
> Jim

Jim,

THe air valve are mainly in the pneumatic / hydraulic servo
mechanisms for X, Y, & Z. Air passes through holes in the paper tape
and is lead by thin pipes directly to the actuators. A small air
cylinder pushes out an 'interposing' pin and thus a binary word
representing the desired target location is set up on these pins. A
series of stacked plates engage with these pins. There is a 'set up
cycle' whereby all the plates withdraw, then try to go forwards -
some will not due to the pins. The final result is an oil passage way
through all the plates at a linear position of the target
destination. The hydraulic servo then homes on this position.

Complicated, but it worked !

Andrew Mawson
Bromley,
Kent,
UK