US$629.00 · In stock Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email. JJG 7-2004: Verification Regulation of Squares Status: Valid JJG 7: Evolution and historical versions
Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
JJG 7-2004 | English | 629 |
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5 days [Need to translate]
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Verification Regulation of Squares
| Valid |
JJG 7-2004
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JJG 7-1986 | English | 439 |
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4 days [Need to translate]
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Verification Regulation of Scale Square
| Obsolete |
JJG 7-1986
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JJG 7-1958 | English | RFQ |
ASK
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3 days [Need to translate]
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(Chinese Industry Standard)
| Obsolete |
JJG 7-1958
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PDF similar to JJG 7-2004
Basic data Standard ID | JJG 7-2004 (JJG7-2004) | Description (Translated English) | Verification Regulation of Squares | Sector / Industry | Metrology & Measurement Industry Standard | Classification of Chinese Standard | A52 | Classification of International Standard | 17.040 | Word Count Estimation | 24,252 | Date of Issue | 2004-03-02 | Date of Implementation | 2004-09-02 | Older Standard (superseded by this standard) | JJG 7-1986% JJG 61-1980 | Quoted Standard | JJF 1001; JJF 1059; JJF 1094; GB/T 6092 | Regulation (derived from) | Administration of Quality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 foot rectangular initial verification, testing and use of follow-up inspection. |
JJG 7-2004: Verification Regulation of Squares---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 Squares
National Metrology Verification Regulations of the People's Republic
Square ruler
Squares
Released on.2004-03-02
2004-09-02 implementation
The General Administration of Quality Supervision, Inspection and Quarantine issued
Rectangular rule verification procedure
ofSq
Uares
Replace JJG 61-1980
JJG 7-1986
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 Angle Measurement Technical Committee
Main drafting unit. Shaanxi Institute of Metrology and Testing
Xi'an University of Architecture and Technology
Participated in the drafting unit. Saibao Metrology Testing Center
Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences
This regulation entrusts the National Geometrical Angle Measurement Technical Committee to explain
The main drafters of this procedure.
Wang Caixia (Shaanxi Institute of Metrology and Testing)
Chang Qing (Shaanxi Institute of Metrology and Testing)
Wang Pingan (Xi'an University of Architecture and Technology)
Participate in the drafters.
Zhang Hui (Shaanxi Institute of Metrology and Testing)
Liu Yanan (Xi'an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences)
table of Contents
1 Scope (1)
2 Citations (1)
3 Overview (1)
4 Metrological performance requirements (7)
4.1 Surface roughness of measuring surface, base surface and side surface (7)
4.2 Flatness of measuring surface and base surface (7)
4.3 Straightness of measuring surface (7)
4.4 Parallelism between bases (7)
4.5 Verticality of the side with respect to the base (7)
4.6 The perpendicularity of the α, β angle measurement surface relative to the base surface (7)
4.7 Line steel rectangular square indication error (7)
5 General technical requirements (7)
6 Measuring instrument control (8)
6.1 Verification conditions (8)
6.2 Verification project (9)
6.3 Verification method (9)
6.4 Processing of verification results (16)
6.5 Verification cycle (16)
Appendix A Gap Method and Direct Measurement Method (17)
Appendix B Certification Certificate Page Format (18)
Appendix C Format of the results of the verification result notice (19)
Rectangular rule verification procedure
1 Scope
This procedure applies to the first verification, subsequent verification and in-use inspection of the square.
2 Citations
This procedure refers to the following documents
JJF1001-1998 general measurement terms and definitions
JJF1059-1999 Measurement Uncertainty Evaluation and Representation
JJF1094-2002 measuring instrument characteristics evaluation
GB/T 6092-2004 square ruler
When using this procedure, care should be taken to use the current valid version of the above cited documents.
3 Overview
The square ruler is a gage commonly used in inspection and scribing work. For checking the verticality of the workpiece or the calibration instrument, machine tool
The mutual perpendicularity of the vertical and horizontal guide rails. Usually made of steel, cast iron or granite. According to its structure, it can be divided into right angles of the cylinder.
Ruler (Fig. 1), rectangular square (Fig. 2), triangular square (Fig. 3), knife-shaped square (Fig. 4), cast iron straight
Square (Figure 5), wide square (Figure 6), flat square (Figure 7), wire steel square (Figure 8). Basic
The dimensions and accuracy levels and indication errors are shown in Tables 1 to 8.
Figure 1 Cylindrical square
Table 1 Basic dimensions and accuracy grade of cylindrical square
Accuracy level 00, 0
basic size
H.200 315 500 800 1250
D 80 100 125 160.200
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