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GB/T 38761-2020Geometrical product specifications (GPS) - Characteristics and conditions - Definitions (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

April 28, 2020

Implementation date

November 1, 2020

Scope

GB/T 38761-2020 (Geometrical product specifications (GPS) - Characteristics and conditions - Definitions) is available as an English-translated PDF.

GB/T 38761-2020 is the Chinese standard "Geometrical product specifications (GPS) - Characteristics and conditions - Definitions". Its scope clause reads: This standard defines general terms regarding geometric specifications, features and conditions.

These definitions are based on GB/T 24637.1 and The concepts in GB/T 38760 and the mathematical description in Appendix B of GB/T 24637.1-2020.

This standard is not only applicable to industrial applications, but can also be used as a "road map" for understanding and planning geometric features, thus making Industry and software manufacturers are unified in standardization.

This standard defines the basic types of geometric features and conditions, and these descriptions apply to the following situations. --- a workpiece; --- an assembly; --- A batch of workpieces; --- A batch of assembly parts.

These definitions are based on the concept and duality principle of the operation set in GB/T 24637.1 and GB/T 24637.2, and by The description of the type of geometric features in GB/T 38760.

Conceptually, these canonical operations can be used as canonical operation sets or check operation sets (the principle of duality). This standard is not intended to define GPS specifications, symbols or other types of expressions. Its clauses include terms and definitions.

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Document preview — GB/T 38761-2020

National Standard of the People's Republic of China

ICS: 17.040.30
Classification: J 04

Issued by: State Administration for Market Regulation, China National Standardization Administration

Foreword
1 Scope
2 Normative references
3 Terms and definitions
3.1 Geometry specification
3.2 Condition
3.3 Geometric features
3.4 Statistics
3.5 Calculation characteristics
3.6 Compound feature
3.7 Geometric characteristic value
3.8 Basic characteristics
3.9 GPS features
4 Overview
4.1 General normative principles
4.2 General characteristics principle
5 Description of GPS features
5.1 Overview
5.2 Single and related features
5.3 Local and global features
5.4 Deviation elements and reference elements
5.5 Independent features
5.6 Regional characteristics
5.7 Metrological characteristics
5.8 Assembly or subassembly features
6 Relations between characteristic terms
Appendix A (informative appendix) Overview Figure
Appendix B (Normative) Basic (geometric) characteristics
Appendix C (Informative Appendix) Relationship with GPS Matrix Model
References

1 Scope

This standard defines general terms regarding geometric specifications, features and conditions. These definitions are based on GB/T 24637.1 and

The concepts in GB/T 38760 and the mathematical description in Appendix B of GB/T 24637.1-2020.

This standard is not only applicable to industrial applications, but can also be used as a "road map" for understanding and planning geometric features, thus making

Industry and software manufacturers are unified in standardization.

This standard defines the basic types of geometric features and conditions, and these descriptions apply to the following situations.

--- a workpiece;

--- an assembly;

--- A batch of workpieces;

--- A batch of assembly parts.

These definitions are based on the concept and duality principle of the operation set in GB/T 24637.1 and GB/T 24637.2, and by

The description of the type of geometric features in GB/T 38760.

Conceptually, these canonical operations can be used as canonical operation sets or check operation sets (the principle of duality).

This standard is not intended to define GPS specifications, symbols or other types of expressions.

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this article

Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document.

GB/T 3358.1 Statistics vocabulary and symbols Part 1.General statistical terms and terms used in probability (GB/T 3358.1-

2009, ISO 3534-1..2006, IDT)

GB/T 3358.2 Statistics Vocabulary and Symbols Part 2.Application Statistics (GB/T 3358.2-2009, ISO 3534-2..2006,

IDT)

GB/T 24637.1 Geometrical Product Specification (GPS) General Concept Part 1.Geometric Specification and Inspection Model (GB/T 24637.1-2020, ISO 17450-1..2011, MOD)

GB/T 24637.2 Product Geometric Technical Specifications (GPS) General Concept Part 2.Basic Principles, Specifications, Operation Sets and Inaccuracy

Rating (GB/T 24637.2-2020, ISO 17450-2..2012, MOD)

GB/T 38760 Product Geometric Technical Specification (GPS) specifications and elements used in inspection (GB/T 38760-2020,

ISO 22432..2011, MOD)

3 Terms and definitions

The terms and definitions defined in GB/T 3358.1, GB/T 3358.2 and GB/T 24637.1 and the following apply to this document.

3.1 Geometrical specification

A set of one or more conditions specified on one or more geometric features.

GB/T 38898 | GB/T 38896 | GB/T 38894 | GB/T 18258 | GB/T 38760 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 91 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 3534 · ISO 17450 · ISO 22432

Cited by

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