GB/T 34874.3-2017Geometrical product specifications (GPS)—X-ray three dimensional size measuring machines—Part 3: Acceptance and reverification tests (English PDF)
产品几何技术规范（GPS） X射线三维尺寸测量机 第3部分：验收检测和复检检测
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
November 1, 2017
Implementation date
May 1, 2018
Scope
GB/T 34874.3-2017 is the English-translated version of 产品几何技术规范（GPS） X射线三维尺寸测量机 第3部分：验收检测和复检检测.
GB/T 34874.3-2017 is the Chinese standard "Geometrical product specifications (GPS)—X-ray three dimensional size measuring machines—Part 3: Acceptance and reverification tests".
Its scope clause reads: GB/T 34874 provisions of this part of the X-ray computed tomography (CT) based on the three-dimensional measuring machine acceptance test And retest test method.
This section specifies the acceptance testing and re-inspection methods for testing with three-dimensional geometric measurement of industrial CT measuring machine (with Hereinafter referred to as CT measuring machine), does not include the CT measuring machine separate components such as X-ray source, CT detector detection, does not apply to materials CT measurement equipment used in analysis and medicine. Its clauses include terms and definitions.
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Document preview — GB/T 34874.3-2017
National Standard of the People's Republic of China
- ICS
- 17.040.30
- Classification
- J 04
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 symbol
- 5 test conditions
- 5.1 Environmental conditions
- 5.2 Operating conditions
- 6 measurement features
- 6.1 Detection of shape error
- 6.2 Detection Size Error
- 6.3 full detection of size error
- 6.4 Length measurement error
- 7 acceptance testing and reinspection testing
- 7.1 General
- 7.2 Detection error
- 7.3 Length measurement error
- 8 application
- 8.1 Acceptance testing
- 8.2 retest test
- 8.3 Intermediate inspection
- Appendix A (informative) Multi ball standard
- Appendix B (informative) resolution of the measurement structure
- Appendix C (Informative) Evaluation of Measurement Uncertainty
- Appendix D (informative) and the relationship between the GPS matrix model
1 Scope
GB/T 34874 provisions of this part of the X-ray computed tomography (CT) based on the three-dimensional measuring machine acceptance test
And retest test method.
This section specifies the acceptance testing and re-inspection methods for testing with three-dimensional geometric measurement of industrial CT measuring machine (with
Hereinafter referred to as CT measuring machine), does not include the CT measuring machine separate components such as X-ray source, CT detector detection, does not apply to materials
CT measurement equipment used in analysis and medicine.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 16857.1 Geometrical product specifications (GPS) CMM acceptance testing and retesting Part 1. Vocabulary
GB/T 16857.2-2006 Geometrical Product Specifications (GPS) CMM acceptance testing and re-inspection Part 2
The coordinate measuring machine used to measure the size
GB/T 18779.1-2002 Geometrical Product Specifications (GPS) - Part 2. Measurement and inspection of workpieces and measuring equipment - Part 1.
Fan test qualified or unqualified decision rules
Common measurement terms and definitions
Uncertainty in measurement evaluation and indication
ISO /T S23165-2006 Geometrical Product Specification (GPS) Guidelines for the Evaluation of Uncertainty in Coordinate Measuring Machines [Geomet- ricalproductspecifications (GPS) -Guidelinesfortheevaluationofcoordinatemeasuringmachine (CMM) testuncertainty]
3 Terms and definitions
GB/T 16857.1, GB/T 18779.1, JJF1001 and ISO /T S23165 as defined by the following terms and definitions apply to this file.
3.1 Probe shape error probingformerror
PF Take the 25 representative points distributed on the standard sphere, using the least squares method to deal with, the Gaussian fitting sphere radius range.
Note. This section provides data processing methods are least squares (Gauss method).
3.2 Probing size error
PS […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.
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Related Standards
GB/T 34874.1-2025 — Geometrical product specifications (GPS) - X-ray three dimensional size measuring machines - Part 1: Vocabulary
GB/T 34874.4-2025 — Geometrical product specifications (GPS) — X-ray three dimensional size measuring machines — Part 4: Evaluation of uncertainty in measurement
GB/T 34874.6-2020 — Geometrical product specifications (GPS)—X-ray three dimensional size measuring machines—Part 6: Testing method of workpieces
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