[TheForge] Air Hammer Guides

Sun Apr 28 15:41:00 2002

Ralph, this is how I got my dies to be the same size as my ram.
In this case 4" x 4" x 4".  (click on the sketch)
http://magichammer.freeservers.com/page5.html
I haven't had any trouble with this design. I am using the same idea
for the big hammer which will have 10-1/2" x 4" x 4" dies.
dave m

----- Original Message -----
From: "Ralph Sproul" <[email protected]>
To: <[email protected]>
Sent: Sunday, April 28, 2002 7:40 AM
Subject: Re: [TheForge] Air Hammer Guides

>         John,  I toyed with some of those same questions.  I ended up
making
> my tubes for the air hammer out of 8" for the outside slides, and 6" for
the
> ram.  I want to be able to put a 2 1/2 x 5 1/2 die on the ram head for
> working with.
>         I ended up going with a 10" open die space, and both tubes are 30"
> long.  This will mean I'll have 10 out, 20 in.   I don't know why, but I
> decided to go the 1/3 - 2/3 for keeping the dies in line better by having
> alot of bearing surface on the upper slides.  To accomplish this I used a
> 20" stroke piston as the ram will obviously have to come up out of the
guide
> tube by 10" also.d
>         The thing I'm working on now is how to attach the 2 x 6 x 6 block
of
> steel I have to the ram tube.  My plan is to mill the block to fit very
> snugly into the 6" tubing.  I was planning on making a verticle 1/2 flat
bar
> x 8" tall go on the diagonal from the ram head to the diagonal corners of
> the ram's tubing.
>         I plan to keep the air use down by having a slide system on the
> pilot switch to control length of stroke.   I also have not worked out the
> ramp or trigger system for this as of yet.  I was just going to get the
ram
> and slider built and go from there with the spaces available.   All part
of
> a proto type hammer.........design as you go program.
>
> Ralph Sproul - Bear Hill Blacksmith
> Webster, NH
>
>
>
> ----- Original Message -----
> From: "John Newman" <[email protected]>
> To: "the forge" <[email protected]>
> Sent: Sunday, April 28, 2002 1:04 AM
> Subject: [TheForge] Air Hammer Guides
>
>
> > I have finally started welding up my air hammer frame.  I just thought I
> > would get opinions on dimensions of my guides before welding that tube
> > to the rest of the frame.  Ralph Sproul and Shannell's  UHMW guides
> > seemed like a good idea so that is what I am building.  I have a 6"x1/4"
> > square tube that I have drilled and tapped to hold 18" of 1/2" UHMW.  I
> > am putting a 20"x 4.5" square tube inside.  The distance from the top of
> > the bottom die to the bottom of the guide tube will be 10", with a 2"
> > thick die this will leave 12" of bearing are at full extension, is this
> > enough? is the extension too much?  I am using a 12" cylinder to start
> > with, because I have one, but I am going to make sure it can be easily
> > changed  to a longer stroke.
> > I'm putting a hydraulic press on the back side of the hammer (another
> > idea taken from Ralph) I am thinking of using the same sort of guides
> > for the press.  Will they work? or are they even neccesary, would two
> > nesting tubes be enough?
> >
> > John Newman
> >
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