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JJF 1097-2021: Calibration Specification for Straight Edges
Status: Valid JJF 1097: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JJF 1097-2021 | English | 469 |
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Calibration Specification for Straight Edges
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JJF 1097-2021
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| JJF 1097-2003 | English | 679 |
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Calibration Specification for Straight Edges
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JJF 1097-2003
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Basic data | Standard ID | JJF 1097-2021 (JJF1097-2021) | | Description (Translated English) | Calibration Specification for Straight Edges | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | A52 | | Word Count Estimation | 20,276 | | Issuing agency(ies) | State Administration for Market Regulation | JJF 1097-2021: Calibration Specification for Straight Edges---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.
Calibration Specification for Straight Edges
National Metrology Technical Specification of the People's Republic of China
Ruler Calibration Specifications
Published on 2021-12-28
2022-06-28 Implementation
Released by the State Administration for Market Regulation
Ruler Calibration Specifications
StraightEdges
Replacing JJF 1097-2003
Focal Point. National Technical Committee of Geometry Engineering Parameter Measurement
Main drafting unit. Beijing Institute of Metrology and Testing Sciences
China Institute of Metrology
Beijing Jiaotong University
Participating in the drafting unit. The Fifth Institute of Electronics, Ministry of Industry and Information Technology
Jiangsu Institute of Metrology and Testing
Beijing Pantex Instruments Co., Ltd.
This specification entrusts the National Technical Committee of Geometry Engineering Parameter Metrology to be responsible for the interpretation
The main drafters of this specification.
Dong Zhijiao (Beijing Institute of Metrology and Testing)
Liu Shenglin (Beijing Institute of Metrology and Testing)
Du Hua (China Institute of Metrology)
Meng Lingchuan (Beijing Jiaotong University)
Participating drafters.
Chang Qing (The Fifth Institute of Electronics, Ministry of Industry and Information Technology)
An Jingjie (Jiangsu Institute of Metrology and Testing)
Luo Ming (Beijing Pantex Instrument Co., Ltd.)
Table of contents
Introduction (Ⅱ)
1 Scope(1)
2 References (1)
3 Overview(1)
4 Metrology Characteristics(2)
4.1 Surface roughness(2)
4.2 Area ratio and number of contact points of cast iron flat ruler working face(2)
4.3 Working surface straightness (2)
4.4 The perpendicularity of the side of the ruler to the working surface (3)
4.5 Parallelism between the upper working surface and the lower working surface (or supporting surface) (4)
5 Calibration Conditions(5)
5.1 Environmental conditions (5)
5.2 Measuring instruments for calibration (5)
6 Calibration items and calibration methods (5)
6.1 Surface roughness(5)
6.2 Area ratio and number of contact points on the working face of cast iron ruler (6)
6.3 Straightness of working surface(6)
6.4 Perpendicularity of side to working surface (7)
6.5 Parallelism between the upper working surface and the lower working surface (or supporting surface) (7)
7 Processing of calibration results (7)
8 Recalibration interval(7)
Appendix A Calculation example of straightness of working face with flat ruler (8)
Appendix B Uncertainty Evaluation of Straightness Measurement Result of Flat Ruler Working Surface (Electronic Level) (10)
Appendix C Evaluation of Uncertainty of Straightness Measurement Results of Flat-Length Working Surface (Laser Collimation Measurement System) (13)
Appendix D Calibration Certificate Contents (15)
Introduction
JJF 1071-2010 "Rules for the Compilation of National Metrology Calibration Standards", JJF 1001-2011 "General Metrology Terms and
Definition" and JJF 1059.1-2012 "Measurement Uncertainty Evaluation and Representation" together constitute support for the revision of this calibration specification
A basic set of specifications for work.
Compared with JJF 1097-2003 "Standards for Calibration of Flat Rulers", the main technical changes are as follows except for editorial revisions.
--- A laser collimation measurement system has been added to the measurement equipment;
---The data processing of working face straightness is changed from "minimum condition method" to "working face straightness data processing adopts two methods.
Endpoint method, least square method or minimum condition method (minimum area method)", add "according to user needs, can be in the certificate
Data processing method is indicated in ";
--- "Use a knife-edge ruler and a gauge block to calibrate by the optical gap method" is changed to "Use a knife-edge ruler and a gauge block to calibrate by the optical gap method or test plug
method calibration";
--- "Parallelism between the upper working surface and the lower working surface" deleted "the flat plate should be higher than the level 1 of the square", and changed to 0 or
Class 1 inspection plate;
--- Put "Straightness Calibration Example of Flat Ruler Working Surface" in the original text in Appendix A "Straightness of Flat Ruler Working Surface"
"Calculation Examples", and added the example comparison of the two-point method, the minimum condition method and the least square method;
---Modified the "Example of Measurement Uncertainty Evaluation of the Calibration Result of Flat Scale Straightness", according to the electronic level used
and the laser collimation measurement system are listed in Appendix B and Appendix C, respectively.
Previous releases of this specification.
---JJF 1097-2003;
---JJG116-1983.
Ruler Calibration Specifications
1 Scope
This specification is applicable to the calibration of cast iron, steel and rock rulers, and the calibration of other rulers may refer to this specification.
2 Reference documents
This specification references the following documents.
GB/T 11336-2004 Straightness Error Detection
GB/T 24631.1-2009 Product Geometric Specifications (GPS) Straightness Part 1.Vocabulary and Parameters
Number (ISO /T S12780-1.2003, IDT)
GB/T 24760-2009 cast iron ruler
GB/T 24761-2009 Steel ruler and rock ruler
For dated references, only the dated version applies to this specification; for undated references
The latest version (including all amendments) applies to this specification.
3 Overview
A flat ruler is a measuring tool with a flat working surface and used to measure the straightness and flatness of the workpiece surface. The manufacturing grade of the ruler
Divided into 00, 0, 1 and 2.The flat ruler generally has one working surface or two upper and lower working surfaces.
The configuration is shown in Figure 1, Figure 2 and Figure 3.
(a) I-shaped
(b) II-shaped
(c) Bridge shape
Figure 1 Schematic diagram of cast iron ruler
Figure 2 Schematic diagram of the type of steel ruler
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