Barrels were selected with an air gage
. This device consisted of a rod that is inserted down the bore with a caliber-specific spud on the end that was pulled through the barrel from breech to muzzle.
Technicians found that a toolholder, when checked with an air gage
, indicated one AT3 grind limit out of tolerance.
In the investigations, several sets of the nozzles were manufactured ensuring the sensitivity of the air gage
in the range from 1.3 down to 0.4 kPa/[micro]m.
, a worldwide supplier of inspection gauging systems and accessories for automotive and non-automotive part inspection systems, is currently upgrading to Autodesk Inventor 11, continuing its support of a 3D design environment.
It eliminates measurement uncertainties caused by an undersized or worn gage probe, which can occur with a hone-head air gage
Feedback from air gage
provides the highest possible accuracy for tool feed control.
For go/no-go applications, the air gage
is usually calibrated with both masters or setting gages set for both tolerances.
The Micro-Dimensionair portable air gage
uses a Micro-Maxum digital indicator.
The new product is also compatible with a wider range of air gage
tooling than the Digital Dimensionair, which it replaces.
Part size is determined based on the amount of air that escapes between the comparator, or the air gage
itself, and the part.
Co, Livonia, MI, calls it Computer-Aided Gaging (CAG).
Hyatt explains that while air gages
have long been used for ID and OD measurements, there are a number of limitations to that approach, particularly when sub micron measures are to be made.