[TheForge] 15Ton Press

[Ralph Sproul]

        This is just a thought........but for knives I can see a cylinder
from the bottom, but one of the assests of a press is the ability to
straighten pieces.  I think it would be really difficult to feed a long part
thru a moving bottom die, where a set of roll stands can be used for a set
lower die (with piston on top).

Ralph Sproul - Bear Hill Blacksmith
Webster, NH


----- Original Message -----
From: "Steve Smith" <sos@alum.mit.edu>
To: <theforge@mailman.qth.net>
Sent: Sunday, January 06, 2002 12:13 AM
Subject: Re: [TheForge] 15Ton Press


> 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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