Re: [CAD_CAM_EDM_DRO] Punch Press, WAS surplus pneumatics

Alex,
My former employer had several of the Amada NC high speed punch presses,
and they all had a flywheel and air clutch to power the punch.
Picture a horizontal tool changer, with 12 spring loaded tools and as a
tool was called up, it was rotated under the plunger.
The plunger is driven like the pistons on a steam train (or a drop
hammer for forging) and these beasts could hit 4 strokes/second, with a
max force of 50 ton.

How would you control (or program) this little beast?

I could see using something like TurboCNC to switch a relay or air
valve on and off (to engage/disengage the clutch) instead of using the Z
axis, with the other programming commands as per normal. Though you
would probably want to program a slight pause (2 or 3 strokes?) before
starting a G1 move.

HTH

Iain




alex wrote:

>
> OK, I repent!
> Last time I was involved with air was 1984. We built a fixture at Dunbell
> Industries (went under couple of years ago) and it was OK then...
> Looks like leverage is an answer now.
> Regards, Alex
> ----- Original Message -----