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One hundred percent inspection for minute etched components

04 December 2012

Photo chemical etching company, Precision Micro can now offer 100 percent inspection on all parts as a result of investment in Automated Optical Inspection (AOI).

Utilising and modifying technology developed for the electronics manufacturing industry, the company has developed a bespoke AOI system that scans the work piece, acquires millions of data points (pixels) in a fraction of a second, and compares the data to a ‘first article, known good sample’.

As well as identifying missing components and features, the system will measure critical dimensions and ensure results fall within agreed limits, measured in microns. The system is so sensitive that it can identify minute surface blemishes, scratches and stains. Any defects are highlighted immediately and all data is stored for future analysis.

In addition to ensuring the shipped product achieves six sigma quality standards, the results of the AOI are fed back into the company’s continuous improvement programme, enabling appropriate remedial action to be taken.

As components become ever smaller, the limitations of manual visual inspection become increasingly evident. The AOI system is not only faster, but by evidence, far more repeatable than manual visual inspection could ever be.

Precision Micro says its AOI system has been developed and installed in response to demands from major customers and is seen as a significant step in meeting the quality requirements of the automotive, healthcare and aerospace industries.

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