Newton Labs A clean gas seal surface
An example of a manifold with a clean sealing surface.
Newton Labs A flawed sealing surface
An example of a manifold with a flawed sealing surface that the system has highlighted in red.

Automated Inspection of Precision Gas Seals

A powerful table-top work station with microscopic precision.

Gas seal inspection unit
A CAD rendering of the inspection unit, where 48 gas seals in the partitioned tray (in gray) are inserted under the imagers and custom illuminators (in red) for evaluation.

The Challenge:

The challenge was to inspect the complete internal metal-to-metal sealing surface bored into small, high-precision gas manifolds, 0.35 in. x 0.44 in.
(9 mm x 11mm) diameter . In order to meet specifications and pass inspection, the sealing interface was to be ground to the specific surface finish and be free of microscopic defects and contamination.

The Solution:

Newton engineers developed custom optics that focused the maximum amount of light into the small surface area of the port, allowing uniform and non-distorted view into the bore. Custom illumination highlighted defects on the mirror-like surface finish. When a defect in a unit was detected by the machine vision inspection system, the unit's image would display on a video screen for removal by an operator.

Newton Labs
Newton Labs

Technology Applied:

Microscopic Defect
& Pattern Recognition

Location: Denver, Colorado