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JJG 24-2016

Chinese Standard: 'JJG 24-2016'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusRelated Standard
JJG 24-2016English479 Add to Cart Days<=4 Depth Micrometers Valid JJG 24-2016
JJG 24-2016Chinese24 Add to Cart <=1-day [PDF from Chinese Authority, or Standard Committee, or Publishing House]

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Detail Information of JJG 24-2016; JJG24-2016
Description (Translated English): Depth Micrometers
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A52
Word Count Estimation: 21,224
Date of Issue: 2016-11-30
Date of Implementation: 2017-05-30
Older Standard (superseded by this standard): JJG 24-2003
Drafting Organization: Heilongjiang Province metrological test and test institute, Liaoning province measurement science research institute
Administrative Organization: National Geometric Engineering Parameter Measurement Technical Committee
Regulation (derived from): State Administration of Quality Supervision, Inspection and Quarantine Notice No.119 of 2016
Issuing agency(ies): State Administration of Quality Supervision, Inspection and Quarantine


JJG 24-2016
Depth Micrometers
National Metrological Verification Regulation of the People's Republic of China
Depth micrometer
2016-11-30 release
2017-05-30 implementation
State Administration of Quality Supervision, Inspection and Quarantine issued
Depth micrometer test procedure
VerificationRegulationof
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Replacing JJG 24-2003
Coordinate Unit. National Geometric Engineering Parameter Measurement Technical Committee
The main drafting unit. Heilongjiang Province measurement test test hospital
Liaoning Institute of Metrology
Participate in the drafting unit. Guilin measuring and cutting tool limited liability company
Harbin Metrology and Testing Institute
Dalian Institute of Metrology and Measurement
This procedure entrusts the National Geometric Engineering Engineering Metrology Technical Committee to explain
The main drafters of this procedure.
Liang Yuhong (Heilongjiang Province Measurement and Testing Institute)
Yang Lin (Heilongjiang Province measurement test test hospital)
Liu Na (Liaoning Institute of Metrology)
Li Xuhui (Heilongjiang Province Metrology and Testing Institute)
Participate in the drafters.
Zhao weirong (Guilin measuring and cutting tool limited liability company)
Zong Yujuan (Harbin Metrology and Testing Institute)
Wang Tao (Dalian Institute of Metrology and Measurement)
table of Contents
Introduction (II)
1 range (1)
2 References (1)
3 Overview (1)
4 Measurement performance requirements (2)
4.1 line width and width difference (2)
4.2 Distance between the edge of the differential cone and the edge of the fixed tube (2)
4.3 relative position of the end face of the differential cone and the fixed tube mm (2)
4.4 Surface roughness of the measuring surface (2)
4.5 Flatness of the floor of the floor (3)
4.6 Force (3)
4.7 indication error (3)
4.8 Zero value error and change (3)
4.9 proof of measuring the size of the measurement and parallel measurement of two parallel (4)
4.10 parallelism between the measuring rod and the measuring surface of the measuring plate (4)
5 General technical requirements (4)
5.1 appearance (4)
5.2 Partial interaction (4)
6 Metering device control (4)
6.1 Test conditions (5)
6.2 Verification Items and Main Verification Appliances (5)
6.3 Test method (5)
6.4 Processing of test results (9)
6.5 Test cycle (9)
Appendix A depth of the micrometer indication error measurement results of the measurement uncertainty assessment (10)
APPENDIX B CERTIFICATE AND QUALIFICATION RESULTS The information and format (13)
introduction
The amendments to this Code are governed by JJF1001-2011 "General Metrology Terms and Definitions", JJF1002-2010 "
Metrological verification procedures for the preparation of rules ", JJF1059.1-2012" measurement uncertainty assessment and representation "as the basis of the Department
Column specification.
Compared with JJG 24-2003 "depth micrometer", the main technical changes in addition to editorial changes are as follows.
--- the original measurement performance "can change the working length of the measuring rod" to "zero value error and the amount of change", and the technical
Surgical indicators and test methods were modified accordingly;
--- metering performance requirements and GB/T 1218 "depth micrometer" to maintain unity;
--- increase the structure of the digital indicator device type and the corresponding technical requirements;
--- increase the depth of the micrometer corresponding to different measuring rod and micrometer head range of 50mm indication error test,
In the indication error of the test method to increase the "take the maximum value of the test point in the maximum value of the indication error for the foot of the error
difference";
--- increase the "measurement of the measuring rod and the bottom of the measurement plane parallelism" of the test;
--- According to JJF1059.1-2012 "Measurement uncertainty assessment and representation", respectively, according to the upper limit of measurement
25mm, 150mm, 300mm depth micrometer as an example to measure the uncertainty of measurement.
Prerequisites of this Code Release.
--- JJG 24-2003;
--- JJG 24-1986.
Depth micrometer test procedure
1 Scope
This procedure applies to the scale value of 0.01mm, the upper limit of the measurement range of not more than 300mm of the type of depth of 1000
Ruler and type II depth micrometer of the first test, follow-up test and use of the inspection.
2 reference file
This procedure refers to the following documents.
GB/T 1218 depth micrometer
For dated references, only the dated edition applies to this rule; references that are not dated
, The latest version (including all amendments) applies to this procedure.
3 Overview
The depth micrometer is a measure of the distance between the bottom plate measuring surface and the measuring rod
Apparatus is mainly used to measure the depth of the hole or groove of the workpiece and the height of the step. The depth micrometer is fixed by the differential cylinder
Casing, measuring rod, floor, force measuring device, locking device and other components.
Ⅰ-type depth micrometer using the scale to read, the structure of the type shown in Figure 1; Ⅱ-type depth micrometer is also Lee
Read with a line, and equipped with a digital indicator for auxiliary reading, the structure of the type shown in Figure 2. Depth thousands
The attachment of the foot is shown in Fig.
Figure 1 Type I depth micrometer
1-measuring rod; 2-bottom plate; 3-locking device; 4-fixed sleeve; 5-cylinder; 6-force device
Related standard:   JJG 22-2014  JJG 30-2012
   
 
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