Re: [CAD_CAM_EDM_DRO] Air Cylinder Press

In a message dated 07/29/2000 7:29:46 PM Hawaiian Standard Time,
MIADSGNS@... writes:

A small table top air cylinder press? 100 lbs is good but 500 would be better.

Thanks to all for replying to the previous post.

Mario


Mario,

Air cylinders are used for small presses all the time. As all have
mentioned, they can be dangerous if misapplied. For clamping, stamping,
embossing, punching, the most common cylinder as mentioned is a pancake type.
Usually, these have a large bore but very short stroke. This also helps keep
the danger level down. If you use a cylinder flow control valve on each port
of the cylinder, it's top piston speed can be controlled fairly well. Most
times these work by metering air out of the cylinder on the side opposite the
currently pressurized. Most all presses would be set up either as a C-frame
or a tie rod assembly. If you are die cutting balsa or some other material
and need the clearance to maneuver the sheet, then you must use a c-frame.
You could use a welded up frame or a bolted assembly. For a 500 lb unit, the
forces in the frame will be very large, larger still if the throat is very
deep. I doubt a bolted up unistrut or angle iron frame would be stiff enough
to be satisfactory. Most likely, you will end up having two thick plates cut
out as large c's and then welding or bolting horizontal plates for your
cylinder mount and work surface. Hope this helps. Contact me off - list if
you need more detailed info.

Peter
THRD, Inc.