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JJF 1123-2004

JJF 1123-2004_English: PDF (JJF1123-2004)
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JJF 1123-2004English339 Add to Cart 3 days Calibration Specification for Base circle pitch comparator JJF 1123-2004 Valid JJF 1123-2004

BASIC DATA
Standard ID JJF 1123-2004 (JJF1123-2004)
Description (Translated English) Calibration Specification for Base circle pitch comparator
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A52
Classification of International Standard 17.040
Word Count Estimation 13,120
Date of Issue 2004-06-04
Date of Implementation 2004-12-01
Older Standard (superseded by this standard) JJG 78-1982
Quoted Standard JJG 1001-1998; JJG 1059-1999; 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 ~ 20mm of base pitch comparator calibration.

JJF 1123-2004
Calibration Specification for Base circle pitch comparator
National Metrology Technical Specification of the People's Republic
Base circular pitch comparator calibration specification
Released on June.2004
Implementation of.2004-12-01
The General Administration of Quality Supervision, Inspection and Quarantine issued
Base circular pitch comparator calibration specification
Arator
Replace JJG78-1982
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 Front and rear proofing plane flatness (2)
4.2 Parallelism of front and rear proofing block working faces (2)
4.3 Research on the front and back proofing block working faces (2)
4.4 Coincidence of front and back proofing block working faces (2)
4.5 indicator table (2)
4.6 Repeatability (2)
4.7 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 Front and rear proofing plane flatness (3)
6.2 Parallelism of front and rear proofing block working faces (3)
6.3 Research on the front and back proofing block working faces (3)
6.4 Coincidence of front and back proofing block working faces (4)
6.5 indicator table (4)
6.6 Repeatability (4)
6.7 indication error (4)
7 Expression of calibration results (4)
8 re-study interval (4)
Appendix A Contents of the Calibration Certificate (5)
Appendix B Evaluation of Uncertainty in Measurement Error of Base Tooth Pitch Comparator (6)
Base circular pitch comparator calibration specification
1 Scope
This specification is applicable to the calibration of a base pitch pitch comparator with a divisional value of 1 μm and a modulus of 2 mm to 20 mm.
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.
JJG1001-1998 General Measurement Terms and Definitions
JJG1059-1999 Measurement uncertainty evaluation and representation
GB/Z 18620.1-2002 Specification for the inspection of cylindrical gears - Part 1
3 Overview
The base circular pitch comparator is divided into two types, a touch blade type and a tangential type, according to the contact form of the contact claw and the tooth surface contact.
For measuring the deviation of the base circle pitch of the external meshing spur gear and helical gear.
When measuring the pitch of the base, the pitch of the base is determined by the basis of the gauge block and the proofing fixture.
The comparator measures the claws to adjust so that the indicator is zero; then the positioning claws and the fixed claws of the base pitch controller
Cross-pressure on the tooth surface to be measured, the movable claw is in contact with the other tooth surface, and the slightly oscillating base circular pitch comparator, on the indicator sheet
The indication value of the turning point is the deviation of the pitch of the measured gear base.
The shape of a typical base-tooth pitch comparator is shown in Figure 1 and Figure 2.
Figure 1 touch blade type Figure 2 Tangential