JJF 1122-2004

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JJF 1122-2004	English	319	Add to Cart	3 days	Calibration specification for Gear Helix Measuring Instruments	JJF 1122-2004	Valid	JJF 1122-2004

JJF 1122-2004
Calibration specification for Gear Helix Measuring Instruments
National Metrology Technical Specification of the People's Republic
Gear spiral measuring instrument calibration specification
Released on June.2004
Implementation of.2004-12-01
The General Administration of Quality Supervision, Inspection and Quarantine issued
Gear spiral measuring instrument
Calibration specification
Instruments
Instead of JJG91-1989
JJG430-1986
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
Main drafting unit. Zhejiang Institute of Quality and Technical Supervision and Testing
China Institute of Metrology
Participated in drafting unit. Hangzhou Advance Gearbox Group Co., Ltd.
Hangzhou Iveco Automotive Transmission Co., Ltd.
This specification is interpreted by the focal point
The main drafters of this specification.
Mao Zhenhua (Zhejiang Institute of Quality and Technical Supervision and Testing)
Zhang Wei (China Institute of Metrology)
Participate in the drafters.
Xu Chen (Hangzhou Iveco Automotive Transmission Co., Ltd.)
Ni Deguang (Hangzhou Advance Gearbox Group Co., Ltd.)
table of Contents
1 range (1)
2 Citations (1)
3 Overview (1)
3.1 Mechanical gear measuring instrument spiral measurement principle (1)
3.2 CNC gear measuring instrument spiral measurement principle (1)
4 Measurement characteristics (1)
4.1 Top and bottom coaxiality (1)
4.2 Parallelism of the vertical carriage relative to the top and bottom line (1)
4.3 The indication error of the micrometric system (1)
4.4 Helix shape deviation of instrument measurement curve (1)
4.5 Spiral tilt deviation of the instrument measurement curve and its left and right tooth surface difference (1)
4.6 Total deviation and repeatability of the instrument's spiral (1)
5 Calibration conditions (2)
5.1 Environmental conditions during calibration (2)
5.2 Calibration Standard (3)
5.3 Other requirements (3)
6 calibration items (3)
7 Calibration method (3)
7.1 Top and bottom coaxiality (3)
7.2 Parallelism of the vertical carriage relative to the top and bottom lines (3)
7.3 Indication error of micrometric system (4)
7.4 Instrument spiral deviation (4)
8 Calibration result processing (5)
9 re-study interval (6)
Appendix A Calibration Certificate Page Format (7)
Gear spiral measuring instrument calibration specification
This specification specifies calibration items and calibration methods for the spiral measurement of gear measuring instruments. When being measured by the gear
When the instrument has multiple measurement functions, it should be used together with other specifications to fully evaluate the measurement of its different functions.
Sex.
1 Scope
This specification applies to the calibration of spiral measurements of various gear measuring instruments.
2 Citations
This specification refers to the following documents
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
Use of this specification should be done with the current valid version of the above cited documents.
3 Overview
Gear measuring instruments are divided into mechanical and numerical control.
3.1 Mechanical gear measuring instrument spiral measurement principle
Mechanical gear measuring instruments are single disc type, grading disc type and lever disc type, etc. It is based on gear spiral
The principle of development, the theoretical helix is generated by the mechanical mechanism, and the actual curve of the device under test is compared with the theoretical spiral by the sensor.
The trajectory is compared, and the difference is input to the recorder to give a spiral deviation curve. Its structure is shown in Figure 1.
3.2 CNC gear measu