Deburr Standard

[AeroPD805]

Deburring seems to be a process that's different
from company to company.
Does anyone know if there's actually an industry
standard? Or can someone suggest a source of a
good general overview of deburring?
I tried a web search and the result was mostly
vendors with various devices to sell.
Thanks for any input...
Pete

 

[EnglishMuffin]

I expect your search turned up this book - but in case it didn't, here's the link (you could try the author).

http://www.abrasiveengineering.com/bkdebur.htm

 

[EnglishMuffin]

And here's another link that suggests there are no standards :

http://archive.metalformingmagazine.com/1996/12/6mfdec5.htm

 

[Carburize]

I seem to remember that there used to be an ARP ( Aerospace Recommended Practice) for deburring - don't have a firm reference but try SAE ARP 1925.

 

[monkeydog]

I have found if your part or area that is being deburred is critical enough to warrant attention, then it is better to add a note (even flag if you have to) that will state something like:
Break all sharp edges .010 max.
A note like that normally will get the attention of the machinist or shop supervisor.

 

[MadMango]

There's so many different methods of deburring, that's it's hard to imagine that there would be a standard to cover it.

manual debur
time saver
heat flash
tumble

MadMango
"Probable impossibilities are to be preferred to improbable possibilities."
Have you read faq731-376 to make the best use of Eng-Tips Forums?

 

[EnglishMuffin]

This book has information in chapter 3 (so it says) on recent standards developed by the "Worldwide Burr Technology Committee" :

http://www.abrasiveengineering.com/bkhandd.htm

 

[AeroPD805]

The reason I posed the question was because I'm
organizing training and putting together a
formal procedure. I'd rather use an industry
standard than "re-creating the wheel".
More specifically the application is a stamped
hole through an aluminum extrusion.
There a reluctance to deburr multiple holes by hand,
but then using an air tool seems to remove too much
material. I'd specify a dimension, but the process
personnel aren't machinist...

Has anyone tried the Burraway tool, [aka: clothspin
deburr tool]?? see:

http://www.usatco.com/deburring_03.asp

Thanks again...
Pete

 

[EnglishMuffin]

What's wrong with a manual deburring tool like a shaviv ? They remove a fairly predictable amount and are pretty quick to use.

 

[AeroPD805]

E/M,
They use a similar tool now. The operation requires
deburring hundreds of holes, so I'd like to find a
more automated method.
Pete

 

[rw7mm08]

There are abrasive brush type time-savers. If the parts are flat these work very well and they're fast. That's what we do if there are a lot of holes. If it's only a few we do the manual thing.
Bob

 

[AeroPD805]

Pat,
Yes, they tried a chamfer tool with a drill stop and somehow
always manage to remove too much material. I'd like to find
a fail safe way to process multiple holes.
In the interim I may try the burraway tool.

Thanks for all the input... B-)
P.

 

[dgallagher]

Not a standard - but a good thread on deburring:
thread404-35606

 

[diamondjim]

It is hard to develop a standard for deburring
as to various thicknesses of materials, the reason
for deburring callout. Is it for removing stress
risors or just to allow for a radius to form
after coating or plating? Will it be done by
hand or automated?
Is it cosmetic and just to remove sharp edges for
assembly? Is it an external surface or internal
surface that may need a sharp edge? Is it an interface
surface and on and on?
If your deburring method removes too much material
on a hole, why not call for the holes to be undersize
before deburring?

 

[EnglishMuffin]

If this is a common problem, why hasn't somebody developed a blanking process that doesn't produce burrs, or removes them as part of the process ?

 

[trithis]

Have you tried to use a micro stop countersink unit, some people call them a pressure foot. They are very adjustable, a wide range of cutters can be used including c-sinks with pilots (a big help). We use them alot on c-sinks that are +/_ .005 on the tolerance and have no problem. We use them on drill press or hand air drills. You can find them in most aircraft tool catalogs like California aircraft tool, Destaco tool and even rutland catalogs. The draw back is the size of the foot, hard to get close to shoulders, we modifie them special applications.

 

[jeanpaul]

Take a look at ISO 13715. You could be interested.