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Posted by wingnut on August 12, 2006, 1:39 pm
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Hi has anybody built a small press brake??? I have a number of small
aluminium components that need bends with a wide variety of bend
radius's that really suit the use of a pressbrake rather than a folder,
if anybody has a design or knows of one I would be very gratefull
Regards
Paul
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Posted by =?ISO-8859-1?Q?Nick_M=FCller?= on August 12, 2006, 4:19 pm
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> Hi has anybody built a small press brake???
Mememe! :-)
> I have a number of small aluminium components that need bends with a wide
> variety of bend radius's that really suit the use of a pressbrake rather
> than a folder, if anybody has a design or knows of one I would be very
> gratefull
OK, here it is. It's very special in one aspect, and you'll like that!
As a pressure source, I used a 10 ton cylinder from a press set I bought
20 years ago when I made some body work on cars.
The frame is welded out of flat stock (don't have the sized here, but
can have a look if you want). There are two pairs of horizontal bars
that either work as "table" or hold the "knives" (that V-shaped pieces).
The very special thing about it is, that I am not using the conventinal
prism bar (we call it that way. It's the bar with the V-groove the sheet
metal is pressed into), but some special polyurethane rubber. I found
that when I googled for something different and was so convinced that I
built the press around it. The PU-bar is 300mm long, has a square
section of about 40*40mm and a hole (diam about 15mm) in the center all
the length through. That rubber is _very_ tuff. You nearly can't ruin
it. You lay the metal on it and press it into the rubber with the
"knives". The rubber gets compressed and wraps the sheet around the
knives. You get _no_ scratches. You can have _any_ radius. You can have
very short stickout.
That rubber is so tuff, that you can even bend 5mm sheet on it with a
bending radius of 1mm without hurting it.
I have no photos, but if you beg me, I'll make some. :-))
The rubber is from that company: www.veith-kg.de But their homepage
doesn't speak english. :-((
The product is "Veith Eladur" and you should find a dealer selling that
stuff. The bars are specially designed for bending, don't buy their
PU-springs. :-)
If you need more information, feel free to ask!
Nick
--
The modular DRO
Available now in USA / Canada
<http://www.yadro.de>
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Posted by wingnut on August 12, 2006, 5:21 pm
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Nick M=FCller wrote:
>
> > Hi has anybody built a small press brake???
>
> Mememe! :-)
>
>
> > I have a number of small aluminium components that need bends with a wi=
de
> > variety of bend radius's that really suit the use of a pressbrake rather
> > than a folder, if anybody has a design or knows of one I would be very
> > gratefull
>
> OK, here it is. It's very special in one aspect, and you'll like that!
>
> As a pressure source, I used a 10 ton cylinder from a press set I bought
> 20 years ago when I made some body work on cars.
> The frame is welded out of flat stock (don't have the sized here, but
> can have a look if you want). There are two pairs of horizontal bars
> that either work as "table" or hold the "knives" (that V-shaped pieces).
> The very special thing about it is, that I am not using the conventinal
> prism bar (we call it that way. It's the bar with the V-groove the sheet
> metal is pressed into), but some special polyurethane rubber. I found
> that when I googled for something different and was so convinced that I
> built the press around it. The PU-bar is 300mm long, has a square
> section of about 40*40mm and a hole (diam about 15mm) in the center all
> the length through. That rubber is _very_ tuff. You nearly can't ruin
> it. You lay the metal on it and press it into the rubber with the
> "knives". The rubber gets compressed and wraps the sheet around the
> knives. You get _no_ scratches. You can have _any_ radius. You can have
> very short stickout.
> That rubber is so tuff, that you can even bend 5mm sheet on it with a
> bending radius of 1mm without hurting it.
>
> I have no photos, but if you beg me, I'll make some. :-))
>
> The rubber is from that company: www.veith-kg.de But their homepage
> doesn't speak english. :-((
> The product is "Veith Eladur" and you should find a dealer selling that
> stuff. The bars are specially designed for bending, don't buy their
> PU-springs. :-)
>
> If you need more information, feel free to ask!
>
>
> Nick
> --
> The modular DRO
> Available now in USA / Canada
> <http://www.yadro.de>
> ..|....|....|....|....|....|....|..
Hi Nick
Ok Ok I am begging, that would be very handy, I guess the term used for
you type of configuration would be Hydroforming, never thought about
that, just shows.
My e mail is paulgy80atbtconnect.com.
Cheers in advance, thanks for the response
Paul
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Posted by =?ISO-8859-1?Q?Nick_M=FCller?= on August 12, 2006, 5:32 pm
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> I guess the term used for you type of configuration would be Hydroforming,
> never thought about that, just shows.
No, not quite hydroforming. The press looks normal, except the prism
that is out of rubber.
Hydroforming (also with rubber) has a sealed container.
The process of the press brake is more like cutting (punching) on rubber
or forming on rubber. Veith has that stuff to. But you can use normal PU
with 45 to 60 Shore. Get their booklet, there are a lot of descriptions
in (hoping that there exists a translation somewhere). There also might
be others offering this, but as I don't know the propper terms, I can't
help you finding them.
For the photos, I hop I'll find time tomorrow. Come back to me, if you
are getting impatient (I sometimes even forget things). :-))
Nick
--
The modular DRO
Available now in USA / Canada
<http://www.yadro.de>
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Posted by =?ISO-8859-1?Q?Nick_M=FCller?= on August 13, 2006, 7:18 pm
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> For the photos, I hop I'll find time tomorrow. Come back to me, if you
> are getting impatient (I sometimes even forget things). :-))
You can find them here:
<http://www.motor-manufaktur.de/werkstatt/shop-press/en_index.html>
Also see my other posting for a brief description.
Nick
--
The modular DRO
Available now in USA / Canada
<http://www.yadro.de>
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