Re: [CAD_CAM_EDM_DRO] surplus pneumatics ( was Re: Sources for beltsand pulleys

Hi, Chris!
Thank you for a feedback!
Down here, in Ontario 250 psi is about normal for air - nobody is
complaining
so far...
Yes 4" bore probably will do, but I would prefer even bigger one, just to
make sure.
What you are referring to is an air over hydraulic multiplier, which is
great, but expensive.
At this stage I just want to have something working, even if punching
capacity is limited,
just to prove the concept and software. I saw the product at Names show,
by John Osborne. He was using C-frame Unittool actuated by the lever and CNC
arrangement
for moving stock. I want to do something similar with air cylinder for
punching and
turret for moving Unittools around to change sizes.
Will send you an update every step.
Best regards, Alex

----- Original Message -----
From: Chris L <datac@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Monday, May 05, 2003 1:34 PM
Subject: Re: [CAD_CAM_EDM_DRO] surplus pneumatics ( was Re: Sources for
beltsand pulleys


> Alex,
> That sounds pretty cool.... But, 250psi ?? That is a "lot of stuff"
> behind a 4" piston. Wow. Everyshop I've been in around here, OSHA stepps
> in and wants the pressure to not exceed 90psi unless the device is
> literally "guarded to death", and with drag racers "tranny blanket"
> wrapped around anything even suspected of a failure in the next 100
> years. (for good reason I suppose)
>
> The Surplus Center catalog has a 4" diameter 4" Stroke Cylinder rated
> for 250psi for $59.95 listed in their catalog. (dual acting - 1" rod)
>
> I know a few years back, I found companies doing this with suprisingly
> small bore Air cylinders, but they had some "secondary" technique built
> into the cylinder. I am going to dig up that old literature.... Might
> have been air over sealed hydraulic of some kind.
>
> Cool. Post pictures when that things is done. I've contemplated a Cnc
> Punch press with air as well....
>
> Chris L
>
> alex wrote:
>
> >Folks,
> >the reason I need this cylinder, I want to build a light - duty NC turret
> >punch.
> >It will utilize Jon Elson's Universal Stepper board and EMC.
> >Capacity: 22 gage steel, 1/8 aluminum. Stock size: 6" x 18".
> >Alex
> >
> >----- Original Message -----
> >From: turbulatordude <davemucha@...>
> >To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> >Sent: Sunday, May 04, 2003 6:54 PM
> >Subject: [CAD_CAM_EDM_DRO] surplus pneumatics ( was Re: Sources for belts
> >and pulleys
> >
> >
> >
> >
> >>4" bore, how long a stroke ? what pressure ? there are lots of
> >>cheal (under $100.00) plastic units with 4" stroke with a 60 psi max
> >>pressure. but typically longer, 8-10inches used for HVAC
> >>applications.
> >>
> >>Dave
> >>
> >>
> >>
> >>
> >>
> >>--- In CAD_CAM_EDM_DRO@yahoogroups.com, "alex" <telecomt@t...> wrote:
> >>
> >>
> >>>Thank you, Dave,
> >>>I'm looking for a high-bore (more then 4") or a pancake cylinder
> >>>
> >>>
> >>plus 2 and
> >>
> >>
> >>>3
> >>>position 2 way solenoid valves.
> >>>Regards, Alex
> >>>----- Original Message -----
> >>>From: turbulatordude <davemucha@j...>
> >>>To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> >>>Sent: Sunday, May 04, 2003 5:59 PM
> >>>Subject: [CAD_CAM_EDM_DRO] surplus pneumatics ( was Re: Sources for
> >>>
> >>>
> >>belts
> >>
> >>
> >>>and pulleys
> >>>
> >>>
> >>>
> >>>
> >>>>e-bay offers a decent selection and it changes often enought to
> >>>>
> >>>>
> >>get a
> >>
> >>
> >>>>good variety.
> >>>>
> >>>>Herbach & Raiderman, http://www.herbach.com/about.htm
> >>>>C&H, http://www.aaaim.com/CandH/index.htm
> >>>>MECI http://www.aaaim.com/CandH/index.htm
> >>>>
> >>>>all have some stuff.
> >>>>
> >>>>if you have some specifics, let us know so we can offer some more
> >>>>approprate sources.
> >>>>
> >>>>Dave
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>--- In CAD_CAM_EDM_DRO@yahoogroups.com, "alex" <telecomt@t...>
> >>>>
> >>>>
> >>wrote:
> >>
> >>
> >>>>>Jan,
> >>>>>what is a surplus place for pneumatic cylinders and components?
> >>>>>Alex
> >>>>>
> >>>>>
> >>>>
> >>>>Addresses:
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> >>
> >>
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> >>>
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if
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> >>http://www.metalworking.com/news_servers.html
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> >>http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
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> >>
> >sister site to the CCED group, as many of the same members are there, for
OT
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> >>NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
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> >DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
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> >>bill
> >>List Mom
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> >>Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
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> >Addresses:
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> >OFF Topic POSTS: General Machining
> >If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
> >http://www.metalworking.com/news_servers.html
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> >http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
sister site to the CCED group, as many of the same members are there, for OT
subjects, that are not allowed on the CCED list.
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> >NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
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> OFF Topic POSTS: General Machining
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aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
sister site to the CCED group, as many of the same members are there, for OT
subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
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