GB 4674-2009Safety code for grinding machines (English PDF)

Foreword

All contents of this Standard are compulsory. This Standard is the revision of GB 4674-1984.Compared with GB 4674-1984, the main changes of this Standard are as follows: -- "Foreword" is added; -- "Introduction" is revised to be "Scope" (Chapter 1 of edition-1984; Chapter 1 of this edition); -- The Chapter "Normative reference" is added (see Chapter 2 of this edition); -- The general requirements for design and manufacture of grinding machines are added (

3.1 of this edition); --

2.2.1 of edition-1984 is revised to be "the grinding wheel spindle shall be designed to be able to operate with the maximum allowable load" (

2.2.1 of edition-1984;

3.2.1 of this edition); -- The requirements for clamp nuts of grinding wheel spindle are added (

3.4 of this edition); -- Regulations for marks of grinding machines are added (

3.14 of this edition); -- Regulations of modification, reformation and parts replacement for grinding machines are deleted (

2.13 of edition-1984); -- The requirements for grinding wheel checking are revised. the mark checking is added (

3.1.1 of edition-1984,

4.1.1.1 of this edition); -- Requirements for compaction of grinding wheel and grinding wheel chuck are revised, which stipulates that the pad shall totally cover the contacting surface of the grinding wheel chuck (

3.3.3 of edition-1984,

4.3.2 of this edition); -- The requirements for grinding wheel carrying are revised; add the stipulation that "the marks printed with grinding wheel features and safety speed shall not be smeared or damaged without permission" (

4.1 of edition-1984,

5.1 of this edition); -- The stipulation "changing grinding machines' structure and performance are strictly prohibited without the approval of chief engineer" is deleted (

1 Scope

GB 4674-2009 is the Chinese national standard on safety code for grinding machines, in the field of manufacturing engineering. It carries no /T suffix, which in the Chinese system means compliance is mandatory: a product or a practice within its scope has to meet it to be lawfully made, sold or carried out in China. It was issued on 31 March 2009 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China, and has been in force since 1 December 2009. Classification: ICS 25.100.70, CCS C68. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This Standard stipulates the safety technical requirements in design and manufacture, use, management and maintenance of grinding machines. This Standard applies to the grinding machines that use grinding wheel or grinding segment to conduce manual, mechanical or automatic process. This Standard does not apply to grinding processing machines that use grinding head with a handle, coated abrasive tools, oilstone and grinding paste.

2 Normative references

The articles contained in the following documents have become part of this Standard when they are quoted herein. For the dated documents so quoted, all the modifications (excluding corrections) or revisions made thereafter shall not be applicable to this Standard. For the undated documents so quoted, the latest editions shall be applicable to this Standard.

GB/T 6171 Hexagon nuts, style 1, with fine pitch thread (eqv ISO 8673.1999)

GB 12348 Emission standard for industrial enterprises noise at boundary

GB/T 16769 Metal-cutting machine tools - Measurement method of sound pressure level (neq ISO/DIS 230-5-2.1996)

JB/T 9878 Measurement of dust concentration of metal-cutting machine tool

3 Safety requirements for the design and

manufacture of grinding machines