GlossaryKind of term: Manufacturing termInspection report
What is an inspection report?
An inspection report records, for each checked characteristic, the requirement, the gauge used and the measured value, with a pass or fail.
Each line gives the tolerance alongside the requirement and the measured value, so someone else can check the verdict. Header data tie it to part number, revision, order, number of parts measured, date and inspector. The lines usually follow the numbers on the ballooned drawing. A report can cover a full measurement of one part, a selection of critical characteristics, or the result of sampling a batch.
What does an inspection report depend on?
A measured value only means something with its instrument and conditions. On tight tolerances, measurement uncertainty, the temperature of part and gauge relative to 20 °C and the calibration status of the instrument all count. Whether a value close to the limit passes depends on the decision rule agreed with the customer. A report from CMM software often holds more than the drawing asks for; agree up front which lines the customer wants to see.
How does an inspection report work in practice?
Inspection time builds up line by line, plus drafting time when the report does not come straight out of the measuring software. A report on every part takes far more than a full report on the first article followed by sampling, so establish which the customer means. A report with the first delivery is one-off; a report per delivery comes back with every call-off. The number of characteristics is a fair first measure of the inspection load, although time per characteristic varies widely: a dimension taken with a caliper is a different job from a form tolerance on the CMM.
What is an inspection report often confused with?
An inspection report is not a first article inspection: the first article inspection is the check, the report is the document it produces. A certificate of conformity is different again: it declares that the delivery meets order and drawing and carries no measured values.
How do you see an inspection report in Blake?
In Blake the drawing values that often return in an inspection report, such as tolerances, roughness and threads, sit with the part as proposals, beside the drawing. You confirm or correct them, and the history shows who changed what and when. More on requests.
Frequently asked questions
What goes into an inspection report?
For each characteristic: the balloon number, the nominal size with tolerance, the instrument, the measured value and the verdict. At the top: part number, revision, order number, number of parts measured, the date and who measured. A customer form may ask for more.
How do I price an inspection report in a quote?
Often as its own item: time per characteristic and per part measured, a one-off measuring program where the CMM needs one, and drafting time. Price the first-delivery report once and a per-delivery report on each call-off.
Do I need an inspection report for every part?
Only when the customer asks for it. Common practice is a full report on the first article and sampling after that, to an agreed plan. State in the quote which variant the price covers.