GB/T 6404.1-2005Acceptance code for gear units -- Part 1: Test code for airborne sound (English PDF)

Foreword

GB/T 6404 "Acceptance code for gear units" is divided into two parts.

- Part 1.Test code for airborne sound;

- Part 2.Determination of mechanical vibrations of gear units during acceptance

testing.

This is Part 1 of GB/T 6404, corresponding to ISO 8579-1.2002 "Acceptance code for

gear units - Part 1.Test code for airborne sound" (English version).

This Part replaces GB/T 6404-1986.

This Part identically adopts ISO 8579-1.2002.For ease of use, the following editorial

modifications have been made to this Part.

- Some formatting was modified to conform to Chinese language conventions;

- Replaced the comma "," used as a decimal point with a period ".";

- Deleted the foreword and introduction of ISO 8579-1.

Annex A, Annex B and Annex C of this Part are informative.

This Part was proposed by China Machinery Industry Federation.

This document shall be under the jurisdiction of National Technical Committee on

Gears of Standardization Administration of China.

Main drafting organizations of this document. Zhengzhou Institute of Mechanical

Engineering.

Main drafters of this document. Yang Xingyuan, Wang Changlu, Zhang Yuanguo, Wang

Qi, Chen Aimin, Wang Changming, Wei Jianfang, Wang Dejun, Meng Lingzhao, Yang

Pei, Xie Xiaohui.

Versions of standard substituted by this document are.

- GB/T 6404-1986.

Acceptance code for gear units - Part 1.Test code for

airborne sound

1 Scope

This Part of GB/T 6404 specifies the instructions and standardized conditions necessary

for the determination of the airborne sound emission of gear units and gearmotors. It

also specifies the allowed measurement methods, together with the operating and

mounting conditions used for the test.

The emission characteristics include emission sound pressure levels at specified

positions and the sound power level. The determination of these quantities is necessary

for

a) manufacturers of gear units or gearmotors, in order that they may be able to

declare the emitted sound,

b) for comparing the sound emitted by gear units and gearmotors under service

operation, and

c) for the purpose of noise control at the design stage.

This Part of GB/T 6404 has the aim of ensuring, with its use, the reproducibility of the

determination of the airborne sound emission characteristics within specified limits

determined by the grade of accuracy of the basic measurement method used. The sound

measurement methods allowed by this Part of GB/T 6404 are engineering methods

(grade 2) and survey methods (grade 3).

2 Normative references

The provisions in following documents become the provisions of this Part of GB/T

6404 through reference in this Part. For dated references, the subsequent amendments

(excluding corrigendum) or revisions do not apply to this Standard, however, parties

who reach an agreement based on this Standard are encouraged to study if the latest

versions of these documents are applicable. For undated references, the latest edition of

the referenced document applies.

GB/T 10095.1-2001, Cylindrical gears -- System of accuracy -- Part 1.Definitions

and allowable values of deviations relevant to corresponding flanks of gear teeth

(idt ISO 1328-1.1997)

......