JJF 1122-2004 English PDF

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JJF 1122-2004: Calibration specification for Gear Helix Measuring Instruments
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1122-2004	319	Add to Cart	3 days	Calibration specification for Gear Helix Measuring Instruments	Valid

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Basic data

Standard ID: JJF 1122-2004 (JJF1122-2004)
Description (Translated English): Calibration specification for Gear Helix Measuring Instruments
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A52
Classification of International Standard: 17.040
Word Count Estimation: 12,163
Date of Issue: 2004-06-04
Date of Implementation: 2004-12-01
Older Standard (superseded by this standard): JJG 91-1989; JJG 430-1986
Quoted Standard: JJF 1001-1998; JJF 1059-1999; GB/T 10095.1-2001
Issuing agency(ies): State Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to all kinds of gear measuring instruments helix measurement calibration.

JJF 1122-2004: Calibration specification for Gear Helix Measuring Instruments

---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 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 Scope (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 measuring instrument spiral measurement principle The numerical control gear measuring instrument adopts the principle of coordinate measurement, through the angle measuring device (circular grating, etc.) and the length measuring device (long The grating, etc.) measures the coordinate position of the point on the actual curve of the device under test, and compares it with the theoretical curve of the spiral to obtain a spiral Deviation curve. Its structure is shown in Figure 2.

4 Measurement characteristics

4.1 top and bottom coaxiality 4.2 Parallelism of the vertical carriage relative to the top and bottom line 4.3 The indication error of the micrometric system 4.4 The spiral shape deviation of the instrument measurement curve 4.5 The inclination deviation of the spiral of the instrument measurement curve and the difference between the left and right teeth 4.6 Total spiral deviation and repeatability of the instrument The above characteristics are listed in Table 1 for reference during calibration. ......

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