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GB/T 8122-2024: Bore dial indicator
Status: Valid GB/T 8122: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 8122-2024 | English | 359 |
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4 days [Need to translate]
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Bore dial indicator
| Valid |
GB/T 8122-2024
|
| GB/T 8122-2004 | English | 279 |
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3 days [Need to translate]
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Dial bore gauges
| Obsolete |
GB/T 8122-2004
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| GB/T 8122-1987 | English | 279 |
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3 days [Need to translate]
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Dial bore gauges
| Obsolete |
GB/T 8122-1987
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PDF similar to GB/T 8122-2024
Basic data | Standard ID | GB/T 8122-2024 (GB/T8122-2024) | | Description (Translated English) | Bore dial indicator | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J42 | | Classification of International Standard | 17.040.30 | | Word Count Estimation | 18,112 | | Date of Issue | 2024-04-25 | | Date of Implementation | 2024-11-01 | | Older Standard (superseded by this standard) | GB/T 8122-2004 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 8122-2024: Bore dial indicator---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.
ICS 17:040:30
CCSJ42
National Standards of People's Republic of China
Replace GB/T 8122-2004
Inner diameter indicator
Released on 2024-04-25
2024-11-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Type and basic parameters 2
4:1 Type 2
4:2 Basic parameters 3
5 Requirements 4
5:1 Appearance 4
5:2 Interaction 4
5:3 Indicator Table 4
5:4 Measuring surface and positioning surface of bridge guard 4
5:5 Measuring force 4
5:6 Error 5
6 Test conditions 6
6:1 Test temperature 6
6:2 Isothermal time 6
7 Inspection methods 6
7:1 Appearance 6
7:2 Interaction 6
7:3 Indicator table 6
7:4 Inspection of measuring surface and positioning surface of bridge guard 6
7:5 Measuring force and contact pressure 6
7:6 Centering Error 7
7:7 Indication error 7
7:8 Repeatability 8
8 Logo and packaging 9
Foreword
This document is in accordance with the rules of GB/T 1:1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents"
Drafting:
This document replaces GB/T 8122-2004 "Inside Diameter Indicator Table": Compared with GB/T 8122-2004, except for structural adjustments and editorial changes,
In addition to the above, the main technical changes are as follows:
--- Changed the scope of application of the standard (see Chapter 1, Chapter 1 of the:2004 edition);
--- Changed the relevant terms (see Chapter 3, Chapter 3 of the:2004 edition);
--- Changed the type and basic parameters of the inner diameter indicator (see Chapter 4, Chapter 4 of the:2004 edition);
--- Changed the surface condition requirements of the measuring surface and the positioning surface of the positioning bridge (see 5:4, 5:3 of the:2004 edition);
--- Changed the values of the movable probe measuring force and the positioning bridge contact force (see 5:5, 5:5 of the:2004 edition);
--- Changed the error items and added the requirements for digital bore gauges (see 5:6, 5:4 of the:2004 edition);
--- Increased the requirements for inspection conditions (see Chapter 6);
--- Changed the inspection method of centering error (see 7:6, 6:3 of the:2004 edition);
--- Changed the indication error test method (see 7:7, 6:1 of the:2004 edition);
--- Changed the repeatability test method (see 7:8, 6:2 of the:2004 edition);
--- Add requirements for calibration ring gauge (see 7:8):
Please note that some of the contents of this document may involve patents: The issuing organization of this document does not assume the responsibility for identifying patents:
This document was proposed by the China Machinery Industry Federation:
This document is under the jurisdiction of the National Technical Committee for Standardization of Measuring Tools and Instruments (SAC/TC132):
This document was drafted by: Guilin Measuring Tools and Blades Co:, Ltd:, Chengdu Tool Research Institute Co:, Ltd:, Guilin Guanglu Digital Measurement and Control Co:, Ltd:
Company, Chengdu Xincheng Measuring Tools Co:, Ltd:, Harbin Measuring Tools and Cutting Tools Group Co:, Ltd:, Qinghai Measuring Tools and Cutting Tools Co:, Ltd:, Qingliang
Technology (Shenzhen) Co:, Ltd:, Weihai Xinwei Measuring Tool Co:, Ltd:, Shanghai Zijiulang Co:, Ltd:, and Suzhou Guoliang Measuring Tool Technology Co:, Ltd:
The main drafters of this document are: Wei Gaihong, Zhao Weirong, Xu Gang, He Yixian, Huang Zhichao, Zhang Wenyou, Li Hua, Zhang Wei, Wei Jianguo, Ma Shibin,
Sun Yunchen, Che Zhaoping, Xia Xiansen, Zhao Yonghai:
This document was first issued in 1987, revised for the first time in:2004, and this is the second revision:
Inner diameter indicator
1 Scope
This document specifies the types and basic parameters, requirements, inspection conditions, inspection methods, marking and packaging of bore indicator gauges:
This document is applicable to pointers and digital instruments with a graduation value or resolution of 0:01mm, 0:001mm and a measuring range of 6mm~1000mm:
Design, manufacture and inspection of internal diameter indicator gauges with display readings:
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document:
For referenced documents without a date, only the latest version (including all amendments) applies to this document:
This document:
GB/T 1219 Indicator
GB/T 17163 Basic terms for geometric measuring instruments
GB/T 17164 Terminology of geometric measuring instruments Product terminology
GB/T 18761 Electronic digital indicator
GB/T 24634 Product Geometry Technical Specification (GPS) General concepts and requirements for GPS measurement equipment
3 Terms and definitions
The terms and definitions defined in GB/T 17163, GB/T 17164 and GB/T 24634 and the following apply to this document:
3:1
The mechanical transmission system is used to convert the linear displacement of the movable probe into the angular displacement of the pointer on the circular disk, and the circular disk is used to read the angular displacement:
Internal dimension measuring instrument:
Note: The graduation value is 0:01mm, which is called the internal diameter dial indicator; the graduation value is 0:001mm, which is called the internal diameter micrometer:
3:2
The mechanical transmission system is used to convert the linear displacement of the active probe into the linear (or angular) displacement of the sensor, and the electronic digital display technology is used to display the linear displacement of the active probe:
An internal dimension measuring instrument that displays the readings:
Note: The digital internal diameter dial indicator has a resolution of 0:01 mm, and the digital internal diameter micrometer has a resolution of 0:001 mm:
3:3
repeatability
When the internal diameter indicator is used to measure the same object multiple times, the indicator swings back and forth (and the movable probe is extended to a fully relaxed state) to find the
When the turning point is reached, the pointer of the indicator (or displayed value) measures the maximum change of the value measured at the minimum turning point multiple times:
3:4
Central error
During measurement, the diameter of the inner diameter indicator is determined by the connection between the movable probe and the interchangeable probe when the positioning bridge is positioned:
The error caused by the diameter:
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