JJG 427-2004 English PDF

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JJG 427-2004: Verification Regulation of Micrometers with Gauge
Status: Valid

JJG 427: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 427-2004	369	Add to Cart	3 days	Verification Regulation of Micrometers with Gauge	Valid
JJG 427-1986	199	Add to Cart	2 days	Verification Regulation of Micrometers with Gauge Scale Division of 0. 001mm	Obsolete

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Basic data

Standard ID: JJG 427-2004 (JJG427-2004)
Description (Translated English): Verification Regulation of Micrometers with Gauge
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A52
Classification of International Standard: 17.040
Word Count Estimation: 14,188
Date of Issue: 2004-03-02
Date of Implementation: 2004-09-02
Older Standard (superseded by this standard): JJG 427-1986
Quoted Standard: JJF 1001-1998; JJF 1059-1999; GB/T 1216-1985; JJF 1094-2002; JJG 39-1990
Regulation (derived from): Administration of Quality Supervision, Inspection and Quarantine of 2004 No. 24
Issuing agency(ies): State Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to the measurement limit to 100mm, with indexing table is 0. 001mm micrometer initial verification, testing and use of follow-up inspection.

JJG 427-2004: Verification Regulation of Micrometers with Gauge

---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.
Verification Regulation of Micrometers with Gauge National Metrology Verification Regulations of the People's Republic Micrometer with table Released on.2004-03-02 2004-09-02 implementation The General Administration of Quality Supervision, Inspection and Quarantine issued Meter micrometer verification procedure Replacing JJG 427-1986 This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on March 02,.2004, and Implemented on September 2,.2004. Focal Point. National Geometric Quantity Engineering Measurement Technology Committee Drafting unit. Heilongjiang Provincial Metrology Testing and Testing Institute Harbin Metrology Testing and Testing Institute Harbin Electric Machinery Co., Ltd. Jilin Institute of Metrology This regulation entrusts the National Geometric Quantity Engineering Parametric Measurement Technical Committee to explain The main drafters of this procedure. Ma Wei (Heilongjiang Metrological Testing and Testing Institute) Wang Li (Harbin Metrology Testing Institute) Jinyun Library (Harbin Electric Machinery Co., Ltd.) Ma Zhonghuan (Jilin Institute of Metrology) Participate in the drafters. Zhang Yundong (Harbin Metrology Testing Institute)

table of Contents

1 Scope (1) 2 Citations (1) 3 Overview (1) 4 Metrology performance requirements (1) 4.1 scribe line width and width difference (1) 4.2 The relative position of the end face of the tapered cone and the millimeter line on the fixed sleeve (2) 4.3 Distance from the tapered edge of the differential cone to the scribed plane of the fixed sleeve (2) 4.4 Flatness and parallelism of two measuring surfaces with table micrometers (2) 4.5 Comparator with meter micrometer (2) 4.6 Force measurement and force measurement with meter micrometer (2) 4.7 indication error with table micrometer (2) 4.8 Repeatability with a table micrometer (2) 5 General technical requirements (2) 5.1 Appearance (2) 5.2 Interaction of various parts (2) 6 measuring instrument control (3) 6.1 Verification project (3) 6.2 Verification conditions (3) 6.3 Verification method (3) 6.4 Verification result processing (5) 6.5 verification period (5) Appendix A Evaluation of Uncertainty in Measurement Errors with Meter Micrometers (6) Appendix B Format of verification certificate and verification result page (9) Meter micrometer verification procedure

1 Scope

This procedure is applicable to the first verification of a metered micrometer with an upper limit of 100 mm and a graduation value of 0.001 mm. Subsequent verification and in-use inspection.

2 Citations

This procedure refers to the following documents. JJF1001-1998 General measurement terms and definitions JJF1059-1999 Measurement Uncertainty Evaluation and Representation GB/T 1216-1985 outer diameter micrometer JJF1094-2002 Measuring instrument characteristic evaluation JJG 39-1990 Mechanical comparator calibration procedures When using this procedure, care should be taken to use the current valid version of the above cited documents.

3 Overview

The meter with a micrometer (see Figure 1) is a mechanical comparator (hereinafter referred to as the comparator), the ruler and the micrometer. A micrometer that is divided into groups. It is mainly used for comparative measurement of external dimensions. The measuring range with the micrometer is generally divided into (0~25)mm, (25~50)mm, (50~75)mm and (75~100) mm four. The comparator scale value is 0.001mm, and the indication range is generally ±0.03mm and ±0.05mm. Two. Figure 1 with a table micrometer 1-scale frame; 2-anvil; 3-micrometer screw; 4-locking device; 5-fixed sleeve; 6-microtube; 7-insulation device; 8-comparator

4 Metrological performance requirements

4.1 scribe line width and width difference The width of the longitudinal line on the fixed sleeve and the score line on the differential cylinder are (0.15~0.20) mm, and the difference between the line widths is not exceeded. Over 0.03mm. ......

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