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GB/T 22522-2021: Metric series wires for measuring screw threads
Status: Valid GB/T 22522: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 22522-2021 | English | 199 |
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Metric series wires for measuring screw threads
| Valid |
GB/T 22522-2021
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| GB/T 22522-2008 | English | 359 |
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3 days [Need to translate]
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Three wires for screw thread measuring
| Obsolete |
GB/T 22522-2008
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PDF similar to GB/T 22522-2021
Basic data | Standard ID | GB/T 22522-2021 (GB/T22522-2021) | | Description (Translated English) | Metric series wires for measuring screw threads | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J42 | | Word Count Estimation | 9,954 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 22522-2021: Metric series wires for measuring screw threads---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Metric series wires for measuring screw threads
ICS 17:040:30
CCSJ42
National Standards of People's Republic of China
Replacing GB/T 22522-2008
Metric series measuring needles for measuring threads
Published on 2021-12-31
2022-07-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
directory
Preface I
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Types and Dimensions 1
4:1 Type I measuring needle 1
4:2 Type II measuring needle 2
4:3 Type III measuring needle 2
5 Requirements 2
5:1 Materials 2
5:2 Hardness and surface roughness of measuring surface Ra 2
5:3 Accuracy level and measuring needle selection 2
5:4 Group measuring needles 3
5:5 Measuring pin number plate 3
6 Inspection conditions and methods 3
6:1 Inspection conditions 3
6:2 Inspection method 3
7 Logo and Packaging 3
Appendix A (informative) Selection of measuring needles corresponding to common threads 4
Figure 1 Schematic diagram of type I measuring needle (nominal diameter D is 0:115mm~0:577mm) 1
Figure 2 Schematic diagram of type II measuring needle (nominal diameter D is 0:722mm~1:629mm) 2
Figure 3 Schematic diagram of type III measuring needle (nominal diameter D≥1:732mm) 2
Table 1 Accuracy class 3
Table A:1 Measuring needle 4 for measuring the pitch diameter of common thread (M)
Table A:2 Measuring needle 5 for measuring the pitch diameter of a unified thread (UN)
Table A:3 Measuring needle 5 for measuring the pitch diameter of pipe threads (G, R)
Table A:4 Measuring needle 6 for measuring the pitch diameter of trapezoidal thread (Tr)
foreword
This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents"
drafted:
This document replaces GB/T 22522-2008 "Three Needles for Thread Measurement": Compared with GB/T 22522-2008, except for structural adjustment and editing
In addition to the editorial changes, the main technical changes are as follows:
a) The basic parameters of the measuring needle are deleted (see 4:2 of the:2008 edition);
b) Changed the hardness requirements of the measuring surface of the measuring needle (see 5:2, 5:1 of the:2008 edition);
c) Added the requirements for accuracy level 2 (see 5:3);
d) The inspection conditions and methods for measuring needles are added (see Chapter 6);
e) The requirements of the number of this document should be marked on the packing box with the measuring needle (see 7:2):
Please note that some content of this document may be patented: The issuing agency of this document assumes no responsibility for identifying patents:
This document is proposed by China Machinery Industry Federation:
This document is under the jurisdiction of the National Standardization Technical Committee of Measuring Tools and Measuring Instruments (SAC/TC132):
This document is drafted by: Chengdu Xincheng Quantity Tools Co:, Ltd:, Zhejiang Institute of Metrology, Suzhou Guoliang Measuring Tools Technology Co:, Ltd:,
Henan Institute of Metrology, Chengdu Tool Research Institute Co:, Ltd:, Heilongjiang Institute of Metrology Verification and Testing, Shenzhen Metrology Quality Inspection
Testing Institute:
The main drafters of this document: Deng Yi, Mao Zhenhua, Zhao Yonghai, Lu Jinyu, He Yixian, Zhang Haibo, Wu Peigang:
The previous versions of this document and its superseded documents are as follows:
---First published in:2008 as GB/T 22522-2008;
---This is the first revision:
Metric series measuring needles for measuring threads
1 Scope
This document specifies the type and size, requirements, inspection conditions and methods, marking and packaging of metric series measuring needles for measuring threads:
This document is suitable for detecting common thread (M), unified thread (UN), 55° pipe thread (G, R),
Metric series measuring needles (hereinafter referred to as "measuring needles") are used for measuring the pitch diameter of trapezoidal threads (Tr):
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document:
GB/T 14791-2013 Thread terminology
GB/T 17163 Basic terminology of geometric measuring instruments
GB/T 17164 Terminology of Geometric Measuring Instruments Product Terminology
3 Terms and Definitions
The terms and definitions defined in GB/T 14791-2013, GB/T 17163, GB/T 17164 and the following terms and definitions apply to this document:
3:1
A cylindrical working face with accurate dimensions, a physical measuring tool for indirect detection of workpieces such as threads:
4 Types and Dimensions
4:1 Type I measuring needle
The type and size of the type I measuring needle are shown in Figure 1: The diagrams are for illustration only and do not represent the detailed structure:
in millimeters
Figure 1 Schematic diagram of type I measuring needle (nominal diameter D is 0:115mm~0:577mm)
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