GB/T 18779.1-2022Geometrical product specifications (GPS) - Inspection by measurement of workpieces and measuring equipment - Part 1: Decision rules for verifying conformity or nonconformity with specifications (English PDF)

1 Scope

This document specifies the tolerance for a given workpiece characteristic (or workpiece batch characteristic) or the maximum permissible error for the metrological characteristic of the measuring equipment, including

Including the measurement uncertainty to be considered when the measured value is close to the specification limit, and the rules for judging whether the characteristics of the workpiece or measuring equipment are qualified or not.

This document applies to the specifications defined in the GPS general standard (see ISO 14638), including.

---Workpiece specification and its batch specification (usually given in the form of upper specification limit, lower specification limit or upper and lower specification limits);

--- Measuring equipment specification (usually given in the form of maximum allowable error).

This document applies only to characteristics expressed in magnitude and to maximum permissible errors.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references

For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

Part 2.Applied statistics)

Note. GB/T 3358.2-2009 Statistics Vocabulary and Symbols Part 2.Applied Statistics (ISO 3534-2.2006, IDT) ulary)

Note. GB/T 19000-2016 Quality Management System Basis and Terminology (ISO 9000.2015, IDT)

ISO /IEC Guide 98-3 Uncertainty of Measurement Part 3.Guidelines for the Expression of Uncertainty in Measurement (GUM.1995)][Uncer-

1995)]

Note. GB/T 27418-2017 Evaluation and Expression of Measurement Uncertainty (ISO /IEC Guide 98-3.2008, MOD)

ISO /IEC Guide 98-4 Uncertainty of measurement - Part 4.The role of measurement uncertainty in conformity assessment (Uncertainty

3 Terms and Definitions

As defined in ISO 3534-2, ISO 9000, ISO /IEC Guide 98-3, ISO /IEC Guide 98-4 and ISO /IEC Guide 99 and

The following terms and definitions apply to this document.

Note 1.See ISO 3534-1 for the definition of "probability density function (PDF)".

Note 2.See ISO 3534-2 for the definitions of "Specification Limit", "Upper Specification Limit (USL)", "Lower Specification Limit (LSL)", "Specified Tolerance" and "Batch Size".

Note 3."Maximum allowable measurement error", "measurement uncertainty", "standard measurement uncertainty", "composite standard measurement uncertainty", "inclusion interval" and "inclusion probability"

GB/T 10932 | GB/T 22092 | GB/T 26093 | GB/T 18779.3 | GB/T 18779.2 | GB/T 18779.5 | […]