Quality Planning
What is measured, against what, with what — fixed before the goods arrive.
13 steps · 9 questions · 4 screens on this shelf
The screens on this shelf
Records
Inspection Plans
An inspection with no plan is one person’s opinion of what mattered that day. A plan fixes the characteristics, the method, the gauge and the sampling before the goods arrive.
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Records
Characteristics
What is measured, against what, with what. A gauge whose resolution is a tenth of the tolerance cannot police it, and the gauge R&R figure is the honest statement of that.
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Records
Control Charts
Limits computed FROM THE PROCESS, never from the specification — a process comfortably inside a wide tolerance can be wildly out of control and nobody would see it.
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Subgroups
Every subgroup with its readings, its mean and range, and which control rules it broke. A point that breaks a rule while every part is in tolerance is the whole reason the chart exists.
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