Diacro question

You mentioned a diacro bender. What # is is? 1 2 3 or 4 and if more then 2
how big is the top plate in dia?
Thanks
Stan


dougrasmussen@... wrote:

> Stan,
>
> I don't understand all your design parameters, but I accomplished
> something similiar without too much expense and work.
>
> In my case it was to power a Diacro rotary bender. I wrapped the OD
> of the table with a length of roller chain (kind of like making the
> OD into a gear). The rotation was powered by by a hydraulic motor
> with a small sprocket which meshed with the OD "gear". Same thing
> might be done with a pnuematic motor, although hydraulics provide
> much, much more possible torque.
>
> Incidently, In case you find a way to do your project with an air
> cylinder, most all pnuematic cylinders and components can be run off
> low pressure hydraulics since the newer seals will withstand the
> effects of the hydraulic fluid. With hydraulics you can safely run
> the cylinders up to at least 250psi making for a much shorter lever
> arm. Hydraulic pumps can be a problem finding at a bargain price,
> I've been told auto power steering pumps make a good substitute
> (never tried it myself).
>
> Doug
>
> --- In CAD_CAM_EDM_DRO@y..., STAN MCDONALD <SMCDONAL@K...> wrote:
> > I never heard of htis rotary cylinder. What I am atempting to
> eliminate is ME
> > pulling on a 48" bar and forcing the table around..
> > Thanks
> >
> >
> > Smoke wrote:
> >
> > > Better yet, maybe I can describe it...others might be interested
> too.
> > > Instead of using a standard push/pull cyklinder, incorporate a
> rotary air
> > > cylinder into the bottom of the table.
> > > These can be puchased or you could build it into the table. The
> 1-1/2"
> > > thickness of the table would be plenty to allow for this and you
> could
> > > eliminate the arm sticking out from the side.
> > > You could also build in adjustable stops to regulate the amount
> of travel
> > > tyou require. Travel can be well ove 300 degrees using this
> method.
> > >
> > > Smoke
> > >
> > > >Hello list I am working on a project and need to request your
> assistance. I
> > > >am atempting to make a rotary turning table to be driven by an
> air cylinder
> > > >and I need to have the cylinder be retracted and then when fully
> extended
> > > >have the table have moved min 200 degrees or more. The problem I
> have run
> > > >into is when the cylinder has moved the table 180 degrees ( how
> do we
> > > >position the cylinder so that we would not need to stop remove
> the cylinder
> > > >and then retract the cylinder with it on the other side of
> center?
> > > >
> > > >The table is a 1-1/2" thick plate cut round 14-15" in dia made
> of steel. I
> > > >have an arm stuck out one side to connect whatever to and the
> whole thing
> > > is
> > > >resting on some bearings for movment (similar to a car front
> axel).
> > > >
> > > >Thanks
> > > >
> > > >Stan
> > > >
> > > >
> > > >
> > > >Addresses:
> > > >FAQ: http://www.ktmarketing.com/faq.html
> > > >FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> > > >
> > > >Post messages: CAD_CAM_EDM_DRO@y...
> > > >Subscribe: CAD_CAM_EDM_DRO-subscribe@y...
> > > >Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@y...
> > > >List owner: CAD_CAM_EDM_DRO-owner@y..., wanliker@a...
> > > >Moderator: jmelson@a... timg@k... [Moderator]
> > > >URL to this page: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> > > >bill,
> > > >List Manager
> > > >
> > > >
> > > >
> > > >Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
> > > >
> > > >
> > >
> > > Addresses:
> > > FAQ: http://www.ktmarketing.com/faq.html
> > > FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> > >
> > > Post messages: CAD_CAM_EDM_DRO@y...
> > > Subscribe: CAD_CAM_EDM_DRO-subscribe@y...
> > > Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@y...
> > > List owner: CAD_CAM_EDM_DRO-owner@y..., wanliker@a...
> > > Moderator: jmelson@a... timg@k... [Moderator]
> > > URL to this page: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> > > bill,
> > > List Manager
> > >
> > >
> > >
> > > Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>
> Post messages: CAD_CAM_EDM_DRO@yahoogroups.com
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
> Moderator: jmelson@... timg@... [Moderator]
> URL to this page: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> bill,
> List Manager
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/