[TheForge] RE: Hydraulic Forging Press

Thu Mar 13 22:17:00 2003

        Chuck, looks good, I like your little flip tab to hold the top dies.
The guided ram bars look like they are good and rugged.
        When I apply 36 tons to my press, the tower deflects about 1/4".
That is a 16" x 42 lb to the foot beam too.

        Good idea on the power pack being seperate and having quick coupler
options.  The idea of other attachments has me wondering what I'll put on
the back of the new air hammer?  :-)

Ralph


----- Original Message -----
From: "Chuck Robinson" <[email protected]>
To: <[email protected]>
Sent: Thursday, March 13, 2003 6:06 PM
Subject: Re: [TheForge] RE: Hydraulic Forging Press


> Hey Ralph,
> I uploaded  several pictures of my modified "H" frame press to your new
> folder.
> The press is my old design that was later modified by Jim Batson then
again
> later by Uncle Al.
> I'll upload my latest design when I finish building it.
> The die plates are held in the side groves by twisting the butterfly lock
> into the vertical position, and giving the pivot nut a 1/2 turn to tighten
> it with a snub handled socket wrench. The whole process to change dies
takes
> about 45 seconds
> You're entirely correct  that Jim's  hydraulics primer is essential to
> building a good functional press.
> He put a lot of time and effort into it to make it understandable by the
> average person.
> If you don't understand the basics, you can do some serious damage to
> yourself in the blink of an eye.
> In addition to changing the press design I also built my power pack with
15"
> of quick connect hydraulic hoses, so that I could minimize the danger of
> high pressure hydraulic leaks near my face and body.
> I witnessed several of these types of accidents on shipboard, and decided
> that they  weren't a lot of fun.
> chuck
>
> ----- Original Message -----
> From: "Ralph Sproul" <[email protected]>
> To: <[email protected]>
> Sent: Thursday, March 13, 2003 7:03 AM
> Subject: Re: [TheForge] RE: Hydraulic Forging Press
>
>
> >         Thanks Chris, I was looking on the upload page........ so I went
> and
> > just started a new Hydraulic Forging album and it has seven pictures to
> > check out.  This ram guide system is the one Batson has in his book.  It
> > works well, the open anvil you'll notice on my press comes in really
> handy.
> > The other pictures are pretty self explainatory.  The straightening die
is
> > amazing how well it works.  Add wood if you don't want to damage already
> > created textures.  *Be careful puting wood on hot metal in a
> > press.........the flames will shoot three feet to eithe side when you do
> > this.......it works well, but you must be aware of this.  Once thru that
> and
> > you'll know what I mean.  :-)   (spoken with less hair on one arm!)
> >         Batson's book is invaluable for information on how to figure
your
> > piston travel speed.  The two stage pumps run low pressure yielding
higher
> > speed than the high pressure end of the pump that yields about 1/4 of
the
> > ram speed as the low pressure side of the pump.  This is nice to get in
> and
> > out of the heated object, and have the ram go to a really controlable
> speed
> > when getting into the actual work.  You don't see things about to happen
> > with hydraulics like you do with other mechanical devices........when a
> tool
> > or die is subjected to 20-50 tons......there is no difference in
> appearance
> > until a tool comes apart or something shoots across the room(hopefully
not
> > hitting you).  This is why a die lock in system is important, the slow
> > controlable speed of a ram is advised with the two section pumps, and
> having
> > a pressure guage makes you aware of how much pressure your exerting on
an
> > object.  As you press something the heat is absorbed into the dies, the
> > material becomes less workable, and tool stress can become extremely
high.
> > Using a lot of common sense around these tools is mandatory (especially
> with
> > cold work).
> >
> >         I'd like to see other H frame and die ideas, as well as hand
held
> > tools if folks have pictures of them.   I'll try to take pictures of my
> hand
> > held press tools.  They are just like power hammer tools, but four times
> the
> > size to absorb the heat transfer.
> >
> > Ralph
> >
> >
> >
> > ----- Original Message -----
> > From: "Chris Worsley" <[email protected]>
> > To: <[email protected]>
> > Sent: Thursday, March 13, 2003 7:27 AM
> > Subject: Re: [TheForge] RE: Hydraulic Forging Press
> >
> >
> > > Ralph,
> > > When you get to the site, click on the "organize & share" tab, then
> click
> > on the
> > > "new" icon on the right hand side of the panel.
> > >
> > > Chris
> > > Alexandria VA
> > >
> > > Ralph Sproul wrote:
> > >
> > > <snip>
> > >
> > > >         I tried to start a new album and can't figure out how to do
> > > > that......any help appreciated.  Figured it would be Hydraulic Press
> as
> > a
> > > > title.
> > > >
> > > > Ralph
> > >
> > > _______________________________________________
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