[TheForge] 15Ton Press

[Ed Fasula]

I can see how that C style press would get really heavy.  Torque is always 
expensive to resist, eh?  The H design is much more efficient, but I can't 
see how a guy can work with the eye-level of the piece constantly 
moving.  It just seems odd to me.  But I never tried it.

What advantage is there in putting the cylinder on the bottom other the 
keeping the center of gravity low?  If you want you can look at my sketch 
to see what I have in mind:  http://www.geocities.com/edfasula/smithing.html

Thanks.
Ed


At 10:13 PM 1/5/02 -0700, you wrote:
>Consider putting the cylinder on the bottom and having a fixed top die/moving
>bottom die. Steve Rollert has his press that way and it works fine.
>
>I have a C style 35 ton press with the cylinder on top. It is over 7' tall and
>weighs a ton (well, not that much). It would probably weigh a third as much if
>it were both H frame and cylinder underneath.
>
>Steve Smith
>
>Ed Fasula wrote:
>
> > Hi Chuck,
> >
> >  >...have to be extremely tall to accommodate a 32" cylinder... There are
> > enough advantages to my design over the cylinder on top that I
> >  >wouldn't recommend that route.
> >
> > Oops.  Brain fart.  32" is the one for splitting wood.  The press cylinder
> > is 6"x24"
> >
> > Here is a link http://www.geocities.com/edfasula/smithing.html
> > to a sketch of the current thought I have for a structure.  I think I can
> > keep it under 8' without too much worry.  Please criticize now, not after I
> > build it!  What disadvantages do you see with the cylinder on top?  While
> > you're at it, let me know if you have any input on my plan with the pilot
> > valve (there also).  [Also not how I try to pass of images from my scanner
> > as digital camera pictures.]
> >
> >  >I'm not clear
> >  >on why you need to vary the motor speed in a hydraulic system.
> >
> > Because I'll probably split wood with the pump (run out the forge door with
> > hoses with quick connects) and I want it to go fast enough.  But I hear
> > (here) that the pumps scream at 3600 rpm.  I'm not sure what speed I want
> > the ram to travel at.  Some in the book went 2"/sec.  That would take 3600
> > rpm with the pump I'm looking at.  So if I decided if I really wanted to
> > run the press at that, I could, but sill turn it down for delicate work or
> > if I was sick of the racket.
> >
> >  >...why I'm using the C P
> >  >pump.The flow is full volume until you reach the maximum pressure.
> >
> > Do you know what ram speed full volume gives you?
> >
> > Hope you health is coming back well for you.
> >
> > Ed
> >
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