0.003 mm, the true value of the shaft could actually be as high as 50.022 mm (out of specification) or as low as 50.016 mm (in specification).
For a quality or production manager, the cost of a standard can seem like an expense. However, that yields a substantial return by:
Applicable to standards prepared by ISO/TC 213. 2. The Core Problem: Why Do We Need ISO 14253-1? international standard iso 14253 1pdf exclusive
If a customer re-inspects a received part and gets a measurement very close to the limit, the standard’s rules guide them. Typically, the customer may apply an outer guard band , extending the limits by the measurement uncertainty, to reduce the risk of rejecting a good part. This approach helps balance the risks between the two parties.
to the LSL to create the automated "Go/No-Go" boundaries in your metrology software. Typically, the customer may apply an outer guard
If the measured value falls close to a specification limit, and its uncertainty interval straddles that limit, the result is inconclusive. This is known as the or "grey zone." Neither conformity nor non-conformity can be proven. 4. Business Implications for Suppliers and Customers
ISO 14253-1 solves this problem by establishing clear, legally and technically robust . The Default Decision Rules the standard’s rules guide them.
) or improve process capability to keep dimensions well clear of the limits.
Are you currently facing any regarding borderline parts?