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JJF 1121-2004

JJF 1121-2004_English: PDF (JJF1121-2004)
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JJF 1121-2004English319 Add to Cart 3 days Calibration Specification for Hand-hold pitch Comparator JJF 1121-2004 Valid JJF 1121-2004

Standard ID JJF 1121-2004 (JJF1121-2004)
Description (Translated English) Calibration Specification for Hand-hold pitch Comparator
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A52
Classification of International Standard 17.040
Word Count Estimation 12,172
Date of Issue 2004-06-04
Date of Implementation 2004-12-01
Older Standard (superseded by this standard) JJG 79-1982
Quoted Standard JJF 1001-1998; JJF 1059-1999; GB/T 10095.1-2001; GB/Z 18620.1-2002
Drafting Organization Dongfeng Motor Corporation is measured by
Administrative Organization National Technical Committee geometric length measurement
Issuing agency(ies) State Administration of Quality Supervision, Inspection and Quarantine
Summary This standard applies to indexing is 1��m, modulus of 2mm ~ 15mm and l0mm ~ 16mm pitch compare handheld instrument calibration.

JJF 1121-2004
Calibration Specification for Hand-hold pitch Comparator
National Metrology Technical Specification of the People's Republic
Handheld Pitch Comparator Calibration Specifications
Released on June.2004
Implementation of.2004-12-01
The General Administration of Quality Supervision, Inspection and Quarantine issued
Hand-held pitch comparator
Calibration specification
Replace JJG79-1982
This specification was approved by the General Administration of Quality Supervision, Inspection and Quarantine on June 4,.2004, and
Implemented on December 1,.2004.
Focal Point. National Geometric Length Measurement Technical Committee
Drafting unit. Dongfeng Motor Corporation Metrology Institute
This specification is interpreted by the focal point
Drafters of this specification.
Zheng Xu (Dongfeng Motor Corporation Metrology Institute)
table of Contents
1 range (1)
2 Citations (1)
3 Overview (1)
4 Measurement characteristics (2)
4.1 indicator table (2)
4.2 indication repeatability (2)
4.3 indication error (2)
5 Calibration conditions (2)
5.1 Environmental conditions (2)
5.2 Calibration items and standards (2)
6 Calibration items and calibration methods (2)
6.1 Indicator Table (2)
6.2 indication repeatability (2)
6.3 indication error (3)
7 Expression of calibration results (3)
8 re-study interval (3)
Appendix A Calibration Certificate Contents (4)
Appendix B Evaluation of Measurement Uncertainty of Handset Pitch Comparator Error (5)
Handheld Pitch Comparator Calibration Specifications
1 Scope
This specification applies to hand-held pitch ratios with a divisional value of 1 μm and a modulus of 2 mm to 15 mm and 10 mm to 16 mm.
Comparison with the instrument.
2 Citations
The provisions contained in the following documents constitute provisions of this specification by reference in this specification. Publication of this specification
The version shown is valid. All standards, specifications or procedures will be revised and all parties using this specification should
Use the possibility of the latest version of the following literature.
JJF 1001-1998 General measurement terms and definitions
JJF 1059-1999 Measurement Uncertainty Evaluation and Representation
GB/T 10095.1-2001 Involute cylindrical gear precision - Part 1. Determining the deviation of the flanks
Righteous allowable value
GB/Z 18620.1-2002 Specification for the inspection of cylindrical gears - Part 1
3 Overview
The handheld pitch comparator uses the relative measurement principle to measure the adjacent pitch of the external mesh spur gear and helical gear
Instrument for accumulating errors in error and pitch.
The shape of a typical hand-held pitch comparator is shown in Figure 1 and Figure 2.
Figure 1 Figure 2