Automated Inspection of Precision Gas Seals
A powerful table-top work station with microscopic precision.
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.
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.