GB/T 38760-2020Geometrical product specifications (GPS) - Features utilized in specification and verification (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 38760-2020 (Geometrical product specifications (GPS) - Features utilized in specification and verification) is available as an English-translated PDF.
GB/T 38760-2020 is the Chinese standard "Geometrical product specifications (GPS) - Features utilized in specification and verification". Its scope clause reads: This standard defines the general terms and element types of the geometric elements of the workpiece.
These definitions are based on the extended concept of GB/T 24637.1. This standard gives a "road map" of the relationship between geometric elements. This standard applies to the establishment of future standards between industry and software manufacturers in a consistent manner. Its clauses include terms and definitions.
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Document preview — GB/T 38760-2020
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
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Relationships between terms of geometric elements
- Appendix A (informative appendix) Overview Figure
- Appendix B (informative appendix) Examples of links between elements
- Appendix C (Informative Appendix) Relationship with GPS Matrix Model
- References
1 Scope
This standard defines the general terms and element types of the geometric elements of the workpiece. These definitions are based on the extended concept of GB/T 24637.1.
This standard gives a "road map" of the relationship between geometric elements.
This standard applies to the establishment of future standards between industry and software manufacturers in a consistent manner.
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 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)
3 Terms and definitions
The terms and definitions defined in GB/T 24637.1 and GB/T 24637.2 and the following apply to this document.
3.1 Surface model
A model representing the physical limit set of virtual or actual artifacts.
[GB/T 24637.1-2020, definition 3.2]
Note 1.The model is applicable to all closed surfaces (see Figure 1 and Appendix A Figure A.1).
Note 2.The surface model allows the definition of single elements, feature sets and/or partial features. All products can be simulated by the surface model corresponding to each workpiece.
Example. Hollow surface example
GB/T 38898 | GB/T 38896 | GB/T 38894 | GB/T 18258 | GB/T 38761 | […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 77 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 24637.1Geometrical product specifications (GPS) - General concepts - Part 1: Model for geometrical specification and verification
- GB/T 24637.1-2020Geometrical product specifications (GPS) - General concepts - Part 1: Model for geometrical specification and verification
- GB/T 24637.2Geometrical product specifications (GPS) - General concepts - Part 2: Basic tenets, specifications, operators, uncertainties and ambiguities
- GB/T 24637.2-2020Geometrical product specifications (GPS) - General concepts - Part 2: Basic tenets, specifications, operators, uncertainties and ambiguities
ISO 17450
Cited by
- GB/T 47759.1-2026Geometrical product specifications (GPS) - Partition - Part 1: Vocabulary and basic concepts
- GB/T 13319-2020Geometrical product specifications (GPS) - Geometrical tolerancing - Pattern and combined geometrical specification
- GB/T 24637.3-2020Geometrical product specifications (GPS) - General concepts - Part 3: Tolerance features
- GB/T 38761-2020Geometrical product specifications (GPS) - Characteristics and conditions - Definitions
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Related Standards
GB/T 24637.1-2020 — Geometrical product specifications (GPS) - General concepts - Part 1: Model for geometrical specification and verification
GB/T 24637.2-2020 — Geometrical product specifications (GPS) - General concepts - Part 2: Basic tenets, specifications, operators, uncertainties and ambiguities
GB/T 7251.4-2026 — Low-voltage switchgear and controlgear assemblies - Part 4: Particular requirements for assemblies for construction sites (ACS)
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