BS ISO 8525-2008 Airborne noise emitted by machine tools - Operating conditions for metal-cutting machines《机械工具发出的空气噪声 金属切割机的运行条件》.pdf

1、BS ISO 8525:2008 ICS 17.140.20; 25.080.01 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Airborne noise emitted by machine tools Operating conditions for metal-cutting machinesThis British Standard was published under the authority of the Standards Policy and

2、 Strategy Committee on 31 July 2008 BSI 2008 ISBN 978 0 580 58337 7 Amendments/corrigenda issued since publication Date Comments BS ISO 8525:2008 National foreword This British Standard is the UK implementation of ISO 8525:2008. The UK participation in its preparation was entrusted to Technical Comm

3、ittee MTE/1, Machine tools. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standar

4、d cannot confer immunity from legal obligations.BS ISO 8525:2008Reference number ISO 8525:2008(E) ISO 2008INTERNATIONAL STANDARD ISO 8525 First edition 2008-06-15 Airborne noise emitted by machine tools Operating conditions for metal-cutting machines Bruit arien mis par les machines-outils Condition

5、s de fonctionnement des machines travaillant par enlvement de mtal BS ISO 8525:2008 ISO 8525:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embe

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10、ed in Switzerland ii ISO 2008 All rights reservedBS ISO 8525:2008 ISO 8525:2008(E) ISO 2008 All rights reserved iii Contents Page Foreword iv 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Preliminary remarks . 2 4.1 Reference to ISO 230-5 and other standards. 2 4.2 Tests to be

11、performed 2 5 Installation and mounting conditions. 2 5.1 General. 2 5.2 Machine installation 3 5.3 Microphone positions. 3 6 Operating conditions 3 7 Measurement uncertainty 4 8 Information to be recorded 4 9 Information to be reported. 4 10 Declaration and verification of noise-emission values. 5

12、Annex A (normative) Operating conditions for turning machines 6 Annex B (normative) Operating conditions for milling machines 10 Annex C (informative) Data sheets for noise-emission measurement of turning machines 15 Annex D (informative) Data sheets for noise-emission measurement of milling machine

13、s 20 Bibliography . 25 BS ISO 8525:2008 ISO 8525:2008(E) iv ISO 2008 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out

14、through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO coll

15、aborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International St

16、andards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements

17、of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 8525 was prepared by Technical Committee ISO/TC 39, Machine tools, Subcommittee SC 6, Noise of machine tools. BS ISO 8525:2008 INTERNATIONAL STANDARD ISO 8525:20

18、08(E) ISO 2008 All rights reserved 1 Airborne noise emitted by machine tools Operating conditions for metal-cutting machines 1 Scope This International Standard describes, with reference to ISO 230-5, the mechanical and acoustical specifications necessary for a reproducible test method for the deter

19、mination of airborne noise emitted by metal-cutting machines and related auxiliary equipment. The purpose of this International Standard is to facilitate the obtention of comparable test results on the noise emission of similar machines. The results of the tests can be used for comparison, acceptanc

20、e, maintenance or any other purpose. This International Standard specifies, in particular, operating conditions for the measurement of noise emitted by metal cutting machines excluding any cutting process. These operating conditions are strictly the same for the determination of both sound power lev

21、els and emission sound pressure levels at specified positions. It applies to: all kinds of turning machines, including numerical control (NC) turning machines and turning centres; all kinds of milling machines, including NC milling machines and machining centres. For machine tools which enable milli

22、ng and turning operations simultaneously, choose the suitable measurements of this International Standard. Additional types will be covered in future editions of this International Standard. 2 Normative references The following referenced documents are indispensable for the application of this docum

23、ent. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 230-5:2000, Test code for machine tools Part 5: Determination of the noise emission ISO 3744, Acoustics Determination of sound powe

24、r levels of noise sources using sound pressure Engineering method in an essentially free field over a reflecting plane ISO 4871, Acoustics Declaration and verification of noise emission values of machinery and equipment 3 Terms and definitions For the purposes of this document, the terms and definit

25、ions given in ISO 230-5:2000 and the following apply. BS ISO 8525:2008 ISO 8525:2008(E) 2 ISO 2008 All rights reserved3.1 numerically controlled turning machine machine tool in which the principal motion is the rotation of the workpiece against the stationary cutting tool(s) and where cutting energy

26、 is brought by the workpiece and not by tool NOTE This machine is controlled by a numerical control (NC) providing automatic function and can be of a single spindle or multi-spindle type. 3.2 turning centre numerically controlled turning machine equipped with power driven tool(s) and the capacity to

27、 orientate the work holding spindle around its axis NOTE This machine may include additional features such as automatic tool changing from a magazine. 3.3 machining centre numerically controlled machine tool capable of carrying out two or more of the operations of milling, boring, drilling and tappi

28、ng on which tools can be changed automatically from a magazine or similar storage unit in accordance with a machining programme NOTE Most machining centres have facilities for automatically changing the direction in which the workpieces are presented to the tool (e.g. turntables). 4 Preliminary rema

29、rks 4.1 Reference to ISO 230-5 and other standards To apply ISO 8525, reference shall be made to ISO 230-5 for consideration of the test methods, measurement surface, measurement positions, corrections for both the acoustic environment and background noise and the recommended accuracy of testing equ

30、ipment. NOTE For more detailed information, the use of additional basic standards may be helpful (see Clause 2 and the Bibliography). Guidelines for the selection of the most appropriate basic standards are given in ISO 3740. 4.2 Tests to be performed When testing a machine, it is not always necessa

31、ry or possible to carry out all the tests described in ISO 8525. Depending upon the purposes the measurements are used for, the required tests may be chosen. Although prescribed metal cutting tests are excluded from this International Standard, specific cutting tests may be included where appropriat

32、e and desired. 5 Installation and mounting conditions 5.1 General This clause gives general provisions for machine installation and operation. Detailed specifications for specific types of machining processes are given in the annexes. The installation and mounting conditions shall be representative

33、of the typical or normal use of the machine. These conditions shall be the same for the determination of both sound power levels and emission sound pressure levels at specified positions, and for declaration purposes. Care shall be taken to ensure that any electrical conduits, piping or air ducts wh

34、ich are connected to the machinery do not radiate significant amounts of sound energy. BS ISO 8525:2008 ISO 8525:2008(E) ISO 2008 All rights reserved 3 5.2 Machine installation The machine shall be installed according to the manufacturers instructions. If the manufacturer does not provide such instr

35、uctions, this shall be stated in the test report, together with the installation method used. The machine shall be installed in such a way that access to all sides is possible. The machine undergoing the test shall be placed on a reflecting (acoustically hard) plane. If the machine is to be installe

36、d on special foundations or in a pit, the measurements shall be made under these conditions, using the floor level outside the pit as a basis for the reference box and the measurement positions. All protective devices and acoustic guards supplied with the machine shall be fitted and in operation dur

37、ing these tests. 5.3 Microphone positions Microphone positions as specified in ISO 230-5 shall be used for determination of sound power level with accuracy grade 3. If the determination of sound power level with accuracy grade 2 is desired, the microphone positions according ISO 3744 shall be used.

38、NOTE Practical knowledge shows that in typical workshops where machines are installed, accuracy grade 2 is not usually achievable. 6 Operating conditions Noise measurements shall be made during idle running operations, accelerating and braking operations for slide rest and spindle, tool change opera

39、tion and with the machine ready for service with the spindle stationary. The operating conditions during measurement shall be representative of the use of the machinery. Tests according this International Standard are under no load conditions except where special work cycles have been agreed. The te

40、st conditions shall be those specified in the relevant annexes. Machines with provisions for dust extraction shall be tested with the extraction system working. General safety requirements shall take precedence over conditions specified in Annexes A and B. For power driven tools, a noise measurement

41、 shall be made with the maximum speed under no load condition. If the drive of the machine is operated through a selective gear unit, a measurement shall be carried out at the maximum speed of each range. If several work spindles can operate independently, the measurement instructions in the followi

42、ng clauses apply to all work spindles where the maximum driving power is higher than half the driving power of the main spindle. If the machine is provided with a numerical control system which enables automatic operations, a representative test cycle shall be used for noise measurement. This should

43、 include movements and operations of all machine components that can be moved automatically, such as spindle(s), tool changer, workpiece changer, slide rest, etc. (see A.3.4 and B.3.3). The noise emission during the test cycle specified in the annexes of this International Standard shall be measured

44、 under no load conditions. For the test cycle, each operation period and its duration shall be identified and recorded in the test report. Prior to testing, the machine shall be run for at least 30 min at no less than 2/3 maximum spindle speed, or otherwise to the manufacturers specifications to bri

45、ng it up to normal operating conditions. BS ISO 8525:2008 ISO 8525:2008(E) 4 ISO 2008 All rights reserved7 Measurement uncertainty A single value of the sound power level of noise source determined according the procedures of this International Standard is likely to differ from the true value by an

46、amount within the range of the measurement uncertainty. The uncertainty in determination of the sound power level arises from several factors which affect the result, some associated with environmental conditions of the place where the measurement is carried out. For more details of factors that may

47、 need to be taken into account, see ISO 230-5:2000, Clause 7. 8 Information to be recorded The information to be recorded should be carried out according to ISO 230-5:2000, Clause 8. An example of information to be recorded is also to be found in ISO 230-5:2000, Annex D. 9 Information to be reported

48、 For noise measurements that are made according to the specifications of this International Standard in addition to those specified in ISO 230-5, the following information shall be compiled as completely as possible and reported: a) machine data: 1) name and address of the supplier/manufacturer, 2)

49、year of construction, 3) designation of series or type, 4) serial/prototype number of the machine undergoing the test, 5) designation of the machine configuration or identification of the machine components moving along the main linear axes, 6) power of the spindle motor, 7) maximum spindle speed, 8) size of the tool (if one is used, e.g. machines with tool changing systems), 9) working travels, 10) rapid feed rates of the axes involved in the test, 11) maximum programmable feed rates of the axes involved in the test; b) in