Inspect products or work against specifications, record results and decide accept, rework or reject.
Inspections are only as good as the specification behind them. Write the acceptance criteria down before inspecting.
Record actual values, not just pass or fail, so trends are visible.
14 items. Use it on screen, or print it and fill it in by hand.
An inspector checks 20 machined parts from a lot of 500. Two are out of tolerance on one dimension; the lot is held, a non-conformance report is raised and the machine offset is corrected.
Inspection records show a product was checked against the current specification and what happened to anything that failed, which customers and quality systems such as ISO 9001 expect. They also give traceability by lot, so a later complaint can be tied back to the parts, inspector and drawing revision.
| Part | Bracket 7720-B |
|---|---|
| Lot | L-0318, 1,200 pieces |
| Specification | Drawing rev D |
| Sample size | 32 pieces |
| Check | Hole spacing 50.00 +/- 0.10 mm; measured 49.94 to 50.13 |
| Defects | 3 over upper limit, burrs on 2 |
| Decision | Lot held, NCR 114; inspector Wen, March 18 |
Sample for Precision Tooling in Rockford, Illinois. The measured range shows failing parts are just over the limit, which points to tool wear, and holding the whole lot leaves the rework call to the NCR owner rather than the inspector.
Per your sampling plan.
To see trends before failures.
Quality, per your procedure.
Use the same idea with checklists.
A full check of the first part made after a new setup, a drawing revision or a tool change, before the rest of the run continues. Use the same form, mark it first article, and keep it so it can be found if a problem shows up later.
If any of the lot has shipped, or your contract requires notice of nonconformance, tell the customer promptly with the lot number and what was found. For lots caught before shipping, the internal NCR is usually enough unless the customer must approve rework.
More for the same job
Once the quality control inspection form is in place, the next question is usually about shifts and hours. Book a demo to see how EZTime handles scheduling and time tracking.