"Dave @hotmail.com" lostcause3283REMOVE wrote in message
...
"Wild Bill" wrote in
:

You make me think of the honing tools used to polish brake cylinders in the
good old days... Must try!

Wayne

Thanks Joe... a lot to think about from all the great responses.

Wayne

"Joe AutoDrill" wrote in
message ...
That got me thinking. Weiler Corporation " http://www.weilercorp.com/ "
makes abrasive brushes that are designed specifically for deburring
parts. I've used them in auto operations on a machining center with
great
success. Running them by hand would be just as effective.

Because he is working with a tube that will accept another tube
immediately
after the holes are drilled, I suggested he use either a drill or
preferably
a reamer from the end of the tube with a tool extension rod as needed...
That way the inside of the tube is guaranteed to match the ID he needs and
the burr is effectively removed.

As someone else also mentioned, making sure the feed rate of the drilling
machine is controlled could almost eliminate the burr as well. The bit
wants to "jump" through the last little bit of material and that cuases a
heavy burr. If the bit was kept at a constant (slow) feed rate, then the
bit would not "plow" through and the burr would be wafer thin and
minimized.
Even a solid "cleanout" rod could probably be used to deburr the pieces at
that point rather than a reamer...

Poor tube is gonna be sanded, drilled, reamed, poked and burned to a crisp
by the time we all get done with it, huh?

Regards,
Joe Agro, Jr.
(800) 871-5022
http://www.autodrill.com
http://www.multi-spindle-heads.com

V8013

Cost!!!!


"JMV" wrote in message
...
Wayne Lundberg wrote:
Back when I was a practicing Mfg. Eng. at Solar Turbines I did extensive
research into deburring the inside hole made in tubing. I failed to find
anything really earth-shaking.

I'm faced with the problem again in advising a client of mine on how to
deburr the 15 holes he is drilling in 1" od aluminum tubing to create
his
telescopic affair for his cargo net for pickup trucks. He bought a neat
deburring tool from McMaster, on my recommendation, and is using it
quite
well, but his hand and wrist gets tired after about the 100th hole. He
does
not want to follow the logical step in taking the work to Mexico or
China.
He wants his product to be made in the USA.

Any burr left on the inside of the tube screws up the easy telescoping
movement and scratches the inner tube as well.

Anybody have any proven success with this kind of problem?

I told him this is one reason so many manufacturers have gone to Mexico
or
China because deburring is really one of those pesky problems requiring
human hands. Of course he could do the work on a CNC machine and maybe
we
could find a shop to do it but the cost is going to be enormous when he
is
only dealing with a thousand holes a month. Now.

Wayne


we use a company that uses a electro-chemical process.
www.vectron-69.com

My client is now in contact with Cogsdill sales engineers and the project
may go in that direction. So far it promises the best in initial cost and
actual operations... will see.

Wayne

"Joe" wrote in message
...
Hey Joe, not to be contrary or anything but I just finished a job that
had .244" dia holes going through a .500 dia aluminum part. Deburring
the hole with a regular countersink doesn't work bery well. But the
spring loaded Cogsdill Burraway worked great. The secret is using a
tool that fits the drilled closely and messing with the setscrew that
controls tension on the blade. These joles were on the O.D. of the
part. I.D. holes can be harder to deburr right so your suggestion of
having as small a burr as possible by controlling the feed is a good
one. I have rounded the first cutting edge on the Burraway tool. This
is so I can deburr the inside of the hole without doing anything the
the outside. Sometimes the jobs I do require minimal visible edge
breaks for cosmetic reasoms.

Great to learn about these tools from someone who has used them! Thank
you
for the insight. We are always getting inquiries on hole drilling (that's
what we do!) and deburring operations... One of these days, I'll simply
buy
one of their tools and test it on various materials, tubes, etc. for some
first-hand experience too.

Cogsdill makes a burnishing tool which is pretty cool. We use ot for
some
oil impregnated bushings on our machine... I am pretty sure they are made
to be used on a drill press, etc. but I've put a handle on them and use
them
manually. Great quality tooling IMHO.
--


Regards,
Joe Agro, Jr.
http://www.autodrill.com
http://www.multi-spindle-heads.com

V8013

My eBay: http://tinyurl.com/3n8gj