Quality-control reports that used to take an afternoon
Measurement printouts turned into pass/fail decisions and clean QC reports, checked against the customer's engineering drawing.
The problem
Each delivery of small optical parts had to be checked against tight tolerances on an engineering drawing. The readings came from more than one measuring machine, each with its own printout format, and someone had to check and write them up by hand.
How we went about it
- 1We turned the drawing's tolerances into one set of written rules, including the dimensions the machines don't report directly and have to be calculated.
- 2Readings from every machine are converted into the same format before any checking happens.
- 3The pass/fail rule was agreed with the client's QC lead, written down and then applied to every piece the same way.
What we built
- Reading of scan reports and photographed measurement sheets
- Pass/fail checks per dimension, with the reason for every failure
- Branded PDF reports with a batch summary and a card for each piece
- Flags on readings that look like a measuring error, so someone re-checks the part before rejecting it
Where it landed
Every batch is judged by the same rules and documented the same way. Because failures are grouped by cause across batches, the supplier can see which step of the process keeps going wrong.
More work
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