Valid

GB/T 24637.3-2020Geometrical product specifications (GPS) - General concepts - Part 3: Tolerance features (English PDF)

产品几何技术规范（GPS）通用概念第3部分：被测要素

Preview PDF

This is a limited preview

Buy now to download the full PDF (32 pages)

Need quotation for your management?

Get a formal quotation for GB/T 24637.3-2020 in 30 minutes.

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 24637.3-2020 is the English-translated version of 产品几何技术规范（GPS）通用概念第3部分：被测要素.

GB/T 24637.3-2020 is the Chinese standard "Geometrical product specifications (GPS) - General concepts - Part 3: Tolerance features". Its scope clause reads: This part of GB/T 24637 gives the default definition of the extracted elements (composition or export) of the workpiece, which are all used in the GPS specification.

Measurement elements (size, geometry or surface structure specifications). This section defines the default geometric elements used to define GPS features. This part is applicable to the extraction elements of workpieces in product geometric technical specifications and inspection. Its clauses include terms and definitions.

Found what you need?

Document preview — GB/T 24637.3-2020

National Standard of the People's Republic of China

ICS: 17.040.40
Classification: J 04

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

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 General principles
5 Establish default rules for geometric elements
5.1 Overview
5.2 Component
5.3 Central element
Appendix A (Informative Appendix) Relationship with GPS Matrix Model

1 Scope

This part of GB/T 24637 gives the default definition of the extracted elements (composition or export) of the workpiece, which are all used in the GPS specification.

Measurement elements (size, geometry or surface structure specifications). This section defines the default geometric elements used to define GPS features.

This part is applicable to the extraction elements of workpieces in product geometric technical specifications and inspection.

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

ISO 22432..2011, MOD)

GB/T 38761 Geometrical Product Specification (GPS) Features and Conditions Definition (GB/T 38761-2020, ISO 25378.

2011, MOD)

3 Terms and definitions

The terms and definitions defined in GB/T 24637.1, GB/T 38760 and GB/T 38761 and the following apply to this document.

3.1 Relative point pair

The set of two points established at the same time, the distance between the two points is the local size of a size element.

Note 1.The distance between the two points forming the point pair is the size of the two points (see GB/T 38762.1).

Note 2.In the case where the dimension element is "two relatively parallel planes", the center point of the extracted relative point pair is on the center extraction plane.

3.2 Elementary tolerancedfeature

Define the smallest component of a complete geometric element of GPS characteristics.

Example 1.

For the unrestricted plane specification, a global GPS feature is defined for the complete component, in this case, it is a basic measured element.

Example 2.

For straight line specifications, it is possible to define a local GPS feature for each line feature in a given direction in the complete component, and each line feature is a plane

The intersection of the element and the complete constituent element, and is a basic measured element. The complete component is a measured element.

3.3 Measured feature

Complete measured element completetolerancedfeature

A set of one or more geometric elements that define GPS characteristics, or a combination of basic measured elements.

GB/T 23901.4 | GB/T 23901.5 | GB/T 23906 | GB/T 24630.1 | GB/T 24637.4 | GB/T 24637.2 | […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 32 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 17450 · ISO 22432 · ISO 25378

Cited by

How to Download GB/T 24637.3-2020

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.