Re: [CAD_CAM_EDM_DRO] Punch Press, WAS surplus pneumatics

Hi, Iain!
This was my original question also.
Jon Elson pointed out that G-codes generated for a mill or drill can be
modified
for punching application. According to Jon this is doable and I'll have to
rely
on his help and others for resolving this issue.
I'm planning to do it with EMC which has good G-code support and also
lots of talent in the group.
Meanwhile I'm sketching mechanical parts so I could produce working drawings
sometime soon.
The punching speed will entirely depend on the power of the compressor,
probably
it won't be high - may be 2 strokes per seconds at most with force of 1 ton.
This is going to be a tabletop unit, since this is the only space I got
around here,
but I hope it will provide good experience for interfacing and such.
I will place Unipunches (Unittools) on a rotary table and index with the
stepper,
as was advised by Jon also.
Interestingly enough, it doesn't seem to be very difficult project, just
putting
many different parts together.
Best regards, Alex

----- Original Message -----
From: <hllrsr@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, May 06, 2003 5:50 PM
Subject: 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 -----
>
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