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Gunner Asch[_4_] Gunner Asch[_4_] is offline
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Default Air-gaging / was $4 dollar gas and its effects on metalworking

On Sun, 20 Apr 2008 15:07:50 -0500, F. George McDuffee
wrote:

[...]

While looking at a page about Sunnen CNC hones[*] to understand C_pk
I noticed some references to air-gaging systems, which I'm not
familiar with, and for which a minute with Google didn't help much.
Is anyone here an expert re air-gaging systems, whatever they are?

[*] http://findarticles.com/p/articles/m...2/ai_n18706000
(which I viewed with some plugins turned off)

-jiw

==========
Good question.

Air gauging is a technique used to accurately measure the bore
diameter of very deep holes like rifle barrels. The principal is
that you have a short but very accurate guage pin a few
thousandths [or less] under the minimum bore size, at the tip of
the probe with a hole in the side. Air is supplied though the
tube that is the stem of the guage. The air flow will depend on
the space between the probe tip and the bore to be measured.
Clean, very well regulated regulated air is supplied through a
flow meter, typically one of the bouncing ball type, and the
max/min readings are located on the flow guage using very
accurate, typically jig ground, min/max setting masters. As long
as the ball is between the min/max marks on the flow guage, the
bore is within specs. You can also use intermediate setting
rings to get even finer measurements if desired. Rotation of the
part will indicate any out-of-round conditions at the probe hole
location [ball bounces], along the length of the bore.

for more than you wanted to know click on
http://www.coventrygauge.co.uk/Airga...oductindex.htm
http://www.frankcox.com/pages/airelectronicgauges.htm
http://www.marposs.com/site/family.asp?idappl=37
http://www.manufacturingtalk.com/news/brm/brm100.html
http://www.gtma.co.uk/default.asp?folder=160
http://www.edmundsgages.com/products/airgaging.htm
google on "air gauging" for 11k hits
google on "air gaging" 6,100 hits


Unka' George [George McDuffee]



Most excellent explaination!

Gunner


"[L]iberals are afraid to state what they truly believe in, for to do so
would result in even less votes than they currently receive. Their
methodology is to lie about their real agenda in the hopes of regaining
power, at which point they will do whatever they damn well please. The
problem is they have concealed and obfuscated for so long that, as a group,
they themselves are no longer sure of their goals. They are a collection of
wild-eyed splinter groups, all holding a grab-bag of dreams and wishes. Some
want a Socialist, secular-humanist state, others the repeal of the Second
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rights for trees, fish, coal and bugs. Some want cradle to grave care and
complete subservience to the government nanny state, others want a culture
that walks in lockstep and speaks only with intonations of political
correctness. I view the American liberals in much the same way I view the
competing factions of Islamic
fundamentalists. The latter hate each other to the core, and only join
forces to attack the US or Israel. The former hate themselves to the core,
and only join forces to attack George Bush and conservatives." --Ron Marr