1.1 General<\/b><\/p>\n
This part of ISO 230 specifies methods for testing the noise of stationary floor-mounted machine tools and related<\/p>\n
auxiliary equipment directly on the shop floor. The purpose of the measurements is to obtain noise-emission data<\/p>\n
for machine tools.<\/p>\n
The data obtained may be used for the purpose of declaration and verification of airborne noise emission from<\/p>\n
machine tools as specified in ISO 4871, and also for the comparison of the performance of different units of a given<\/p>\n
family of machine tools or equipment, under defined environmental conditions and standardized mounting and<\/p>\n
operating conditions.<\/p>\n
For the purposes of this part of ISO 230, "auxiliary equipment" means hydraulic power packs, chip conveyors,<\/p>\n
coolant-oil mist extractors, heat exchangers, refrigerators, etc. Noise emitted by centrally operated auxiliary<\/p>\n
equipment, connected to several machine tools, shall be considered as background noise.<\/p>\n
General instructions are given for the installation and operation of the machine under test and for the choice of<\/p>\n
microphone positions for the work station and for other specified positions. More detailed instructions can be found<\/p>\n
in specific noise-test standards for individual types of machine tools.<\/p>\n
Clause 11 specifies a method for measuring the emission sound pressure levels at work stations and at other<\/p>\n
specified positions in the vicinity of a machine tool. This method follows the methods specified in ISO 11202 and<\/p>\n
ISO 11204.<\/p>\n
Clause 12 specifies a method for measuring the sound pressure levels on a measurement surface enveloping the<\/p>\n
machine tool and for calculating the sound power level produced by the machine tool. This method follows the<\/p>\n
methods specified in ISO 3744 and ISO 3746.<\/p>\n
The determination of the sound power level on the basis of the intensity method (ISO 9614 and ISO 9614-2) is not<\/p>\n
dealt with in this part of ISO 230.<\/p>\n
1.2 Types of noise and noise sources<\/b><\/p>\n
The methods <\/i>specified in this part of ISO 230 are suitable for all types of noise emitted by machine tools.<\/p>\n
This part of ISO 230 is applicable to machine tools of any type and size, including devices, components and subassemblies.<\/p>\n
NOTE Measurements according to this part of ISO 230 may be impracticable for very tall or very long machine tools, such as transfer lines.<\/p>\n
1.3 Test environment<\/b><\/p>\n
The test environment that is applicable for measurements made in accordance with this part of ISO 230 is generally<\/p>\n
located indoors, with one or more reflecting planes present, meeting specified requirements, as described in<\/p>\n
clauses 11 and 12, respectively in 11.4.2 and in clause 12.3.2.<\/p>\n
1.4 Accuracy grades<\/b><\/p>\n
Individual values of emission sound pressure levels at a fixed position and of the sound power level of a machine<\/p>\n
tool determined in accordance with the procedures given in this part of ISO 230 are likely to differ from the true<\/p>\n
values by an amount within the range of the respective measurement uncertainties. The uncertainties in<\/p>\n
measurements of emission sound pressure levels and in determinations of the sound power level arise from<\/p>\n
several factors which affect the results, some associated with environmental conditions at the test site and others<\/p>\n
with experimental techniques. This part of ISO 230 deals with methods to determine the emission sound pressure<\/p>\n
levels and the emission sound power level, where the results meet grade 2 accuracy (engineering method) and<\/p>\n
grade 3 accuracy (survey method). Because of its higher accuracy, grade 2 should be achieved whenever possible.<\/p>\n
Specific information on measurement uncertainties is given in clause 7.<\/p>\n
Although grade 2 accuracy (engineering) is preferred, grade 3 accuracy (survey) is acceptable for noise declaration<\/p>\n
and most other purposes. In this part of ISO 230, only the determination of grade 3 is described completely. For<\/p>\n
grade 2, ISO 3744 and ISO 11204 shall also be used.<\/p>\n","protected":false},"excerpt":{"rendered":"
Test code for machine tools \u2014 Part 5: Determination of the noise emission<\/b><\/p>\n\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n ISO<\/b><\/a><\/td>\n 2000-08<\/td>\n 36<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":608050,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[268,393,2634],"product_tag":[],"class_list":{"0":"post-608037","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-17-140-20","7":"product_cat-25-080-01","8":"product_cat-iso","10":"first","11":"instock","12":"sold-individually","13":"shipping-taxable","14":"purchasable","15":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/608037","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/608050"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=608037"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=608037"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=608037"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}