Re: [CAD_CAM_EDM_DRO] Re: Punch Press, WAS surplus pneumatics

Dave,
I greatly appreciate your comments.
Let me release General View of the preliminary design so you could see where
I'm coming from. Hopefully will be in a position to do it tonight.
Best regards, Alex

----- Original Message -----
From: turbulatordude <davemucha@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, May 06, 2003 11:00 PM
Subject: [CAD_CAM_EDM_DRO] Re: Punch Press, WAS surplus pneumatics


> Once you start looking at your air consumption, you may have to re-
> think that speed.
>
> a 4 inch piston with 4 inch stroke is almost 1/3 of a cubic foot of
> air volume.
>
> a speed of 1 stroke per second is 60 strokes a minute or 20 CFM and
> THAT is a BIG air compressor !
>
> Also, you will need big air valves so as not to let the air trickle
> into the cylinder, it needs to punch into it. pneumatics works a lot
> like electronics. the restriction of the valve will slow the speed
> of the volume into the capacity of the device.
>
> I have a small 3 ton punch press that has a pretty big flywheel and a
> 1 hp motor. that will be much cheaper to run than a compressor. and
> more quiet too.
>
> For CNC work, it is a small table top work envelope. probably not
> more than 8 inches in throat depth, but then you could have any
> length table.
>
> Dave
>
>
>
>
>
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "alex" <telecomt@t...> wrote:
> > 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
> >
> >
>
>
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