[TheForge] 15Ton Press

Mon Jan 7 07:47:01 2002

Ralph,

What are you using for guides?  What about using roller guides with Chuck's 
design?

On the other hand what about leaving some play in the guides and using two 
cylinders with chuck's design, one at each tension bar?  Ah, thinking out 
loud here, you still would have an issue with the guidance in the plane of 
the press.  OK, rollers on the front and back of the tension bars and using 
two cylinders... what do you think of that?

Ed

At 06:14 AM 1/7/02 -0500, you wrote:
>         Steve, Chuck sent me a picture of his press, and it seems like a
>nice design.  It would work great for billets and straightening, but when
>you upset in a press, the dies really want to move to the side with the
>resistance to the metal being moved.
>         My guides are faily tight, and I have to wrestle with this whem
>making upset feet and components.
>
>Ralph
>
>
>----- Original Message -----
>From: "Steve Smith" <[email protected]>
>To: <[email protected]>
>Sent: Sunday, January 06, 2002 11:38 PM
>Subject: Re: [TheForge] 15Ton Press
>
>
> > It does seem like a weird way to work, but it works. Ralph has a good
>point,
> > though. Steve Rollert is making knives on his.
> >
> > With the cylinder on the bottom you should end up with less steel in your
>framework
> > too.
> >
> > Steve
> >
> > Ed Fasula wrote:
> >
> > > 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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