DIN EN ISO 28927-4-2011 Hand-held portable power tools - Test methods for evaluation of vibration emission - Part 4 Straight grinders (ISO 28927-4 2010) German version EN ISO 28927.pdf

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1、May 2011 Translation by DIN-Sprachendienst.English price group 15No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 17

2、.160; 25.140.01!$phi“1776970www.din.deDDIN EN ISO 28927-4Hand-held portable power tools Test methods for evaluation of vibration emission Part 4: Straight grinders (ISO 28927-4:2010)English translation of DIN EN ISO 28927-4:2011-05Handgehaltene motorbetriebene Maschinen Messverfahren zur Ermittlung

3、der Schwingungsemission Teil 4: Geradschleifer ohne Spannzange (ISO 28927-4:2010)Englische bersetzung von DIN EN ISO 28927-4:2011-05Machines moteur portatives Mthodes dessai pour lvaluation de lmission de vibrations Partie 4: Meuleuses droites (ISO 28927-4:2010)Traduction anglaise de DIN EN ISO 2892

4、7-4:2011-05Together with DIN EN ISO28927-1:2010-05,supersedesDIN EN ISO 8662-4:1995-06www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.3205.11 DIN EN ISO 28927-4:2011-05 2 A comma is used as the decimal marker. National foreword Thi

5、s standard has been prepared by Technical Committee ISO/TC 118 “Compressors and pneumatic tools, machines and equipment”, Subcommittee SC 3 “Pneumatic tools and machines” in collaboration with Technical Committee CEN/TC 231 “Mechanical vibration and shock” (Secretariat: DIN, Germany). The responsibl

6、e German body involved in its preparation was the Normenausschuss Akustik, Lrmminderung und Schwingungstechnik im DIN und VDI (Acoustics, Noise Control and Vibration Engineering Standards Committee in DIN and VDI), Working Committee NA 001-03-07-02 (NALS/VDI C 7.2) Hand-Arm-Schwingungen. This standa

7、rd only deals with straight grinders; for further types of grinders see DIN EN ISO 28927-1, DIN EN ISO 28927-3 and DIN EN ISO 28927-12. In DIN 45679, “feed force” is force applied by only one hand; in ISO 15230 feed force refers to both hands (there it is defined as the “sum of the push force of bot

8、h hands”). In the present standard, in cases where a machine is operated with both hands “feed force” is to be taken to mean the sum of the force of both hands. In the Introduction, it is stated that the basic principle for transducer positioning in accordance with EN 60745 has been adopted, which r

9、epresents a deviation from ISO 20643. This approach is included in Amendment 1 to ISO 20643:2005. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 603-12 DIN ISO 603-12 ISO 4026 DIN EN ISO 4026 ISO 4027 DIN EN ISO 4027 ISO 4029 DIN EN IS

10、O 4029 ISO 5349 series DIN EN ISO 5349 series ISO 6103 DIN EN ISO 6103 ISO 8662-11 DIN ISO/TS 8662-11 ISO 12100 DIN EN ISO 12100 ISO 20643 DIN EN ISO 20643 The German Standards are given in National Annex NA “Bibliography”. Standards designated EN xxx are identical to German Standards designated DIN

11、 EN xxx. DIN EN ISO 28927-4:2010-05 3 Amendments This standard differs from DIN EN ISO 8662-4:1995-06 as follows: a) the standard covers only straight grinders; b) vibrations are measured in three axes and at both hand positions; c) new transducer locations have been specified for the measurements;

12、d) the directions of measurement have been modified; e) the rotational speed has been raised to no-load free running speed; f) the test wheels have been modified and specified in more detail. Previous editions DIN EN ISO 8662-4:1995-06 DIN EN ISO 28927-4:2011-05 4 National Annex NA (informative) Bib

13、liography DIN 45679, Mechanical vibration Measurement and evaluation of the grip and feed forces for assessing the exposure of the hand-arm system to vibration DIN EN ISO 4026, Hexagon socket set screws with flat point DIN EN ISO 4027, Hexagon socket set screws with cone point DIN EN ISO 4029, Hexag

14、on socket set screws with cup point DIN EN ISO 5349-1, Mechanical vibration Measurement and evaluation of human exposure to hand-transmitted vibration Part 1: General requirements DIN EN ISO 5349-2, Mechanical vibrations Measurement and evaluation of human exposure to hand-transmitted vibration Part

15、 2: Practical guidance for measurement at the workplace DIN EN ISO 6103, Bonded abrasive products Permissible unbalances of grinding wheels as delivered Static testing DIN EN ISO 12100, Safety of machinery General principles for design Risk assessment and risk reduction DIN EN ISO 20643, Mechanical

16、vibration Hand-held and hand-guided machinery Principles for evaluation of vibration emission E DIN EN ISO 20643/A1, Mechanical vibration Hand held and hand guided machinery Principles for evaluation of vibration emission Amendment 1 DIN EN ISO 28927-1, Hand-held portable power tools Test methods fo

17、r evaluation of vibration emission Part 1: Angle and vertical grinders DIN EN ISO 28927-3, Hand-held portable power tools Test methods for evaluation of vibration emission Part 3: Polishers and rotary, orbital and random orbital sanders DIN EN ISO 28927-12, Hand-held portable power tools Test method

18、s for evaluation of vibration emission Part 12: Die grinders DIN ISO 603-12, Bonded abrasives products Dimensions Part 12: Grinding wheels for deburring and fettling on a straight grinder DIN ISO/TS 8662-11, Hand-held portable power tools Measurement of vibrations at the handle Part 11: Fastener dri

19、ving tools EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 28927-4 December 2010 ICS 13.160; 25.140.10 Supersedes EN ISO 8662-4:1995English Version Hand-held portable power tools Test methods for evaluation of vibration emission Part 4: Straight grinders (ISO 28927-4:2010) Machines moteur p

20、ortatives Mthodes dessai pour lvaluation de lmission de vibrations Partie 4: Meuleuses droites (ISO 28927-4:2010) Handgehaltene motorbetriebene Maschinen Messverfahren zur Ermittlung der Schwingungsemission Teil 4: Geradschleifer ohne Spannzange (ISO 28927-4:2010) This European Standard was approved

21、 by CEN on 14 December 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national s

22、tandards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language an

23、d notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lit

24、huania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010

25、 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 28927-4:2010: EContents Page Foreword3 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC 27 Introductio

26、n.4 1 Scope5 2 Normative references5 3 Terms, definitions and symbols 6 3.1 Terms and definitions .6 3.2 Symbols6 4 Basic standards and vibration test codes 7 5 Description of the family of machines 7 6 Characterization of vibration8 6.1 Direction of measurement 8 6.2 Location of measurements.8 6.3

27、Magnitude of vibration9 6.4 Combination of vibration directions9 7 Instrumentation requirements .9 7.1 General .9 7.2 Mounting of transducers 9 7.3 Frequency-weighting filter10 7.4 Integration time10 7.5 Auxiliary equipment 10 7.6 Calibration10 8 Testing and operating conditions of the machinery10 8

28、.1 General .10 8.2 Operating conditions 11 8.3 Other quantities to be specified.11 8.4 Attached equipment, work piece and task11 8.5 Operator .14 9 Measurement procedure and validity14 9.1 Reported vibration values 14 9.2 Declaration and verification of the vibration emission value .15 10 Measuremen

29、t report15 Annex A (informative) Model test report for vibration emission of straight grinders17 Annex B (normative) Determination of uncertainty 19 Annex C (normative) Design of test wheel.21 Bibliography28 EN ISO 28927-4:2010 (E) DIN EN ISO 28927-4:2011-05 2Foreword This document (EN ISO 28927-4:2

30、010) has been prepared by Technical Committee ISO/TC 118 “Compressors and pneumatic tools, machines and equipment” in collaboration with Technical Committee CEN/TC 231 “Mechanical vibration and shock” the secretariat of which is held by DIN This European Standard shall be given the status of a natio

31、nal standard, either by publication of an identical text or by endorsement, at the latest by June 2011, and conflicting national standards shall be withdrawn at the latest by June 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent righ

32、ts. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document together with EN ISO 28927-1 supersedes EN ISO 8662-4:1995. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Associatio

33、n, and supports essential requirements of EU Directive. For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement

34、this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerl

35、and and the United Kingdom. Endorsement notice The text of ISO 28927-4:2010 has been approved by CEN as a EN ISO 28927-4:2010 without any modification. EN ISO 28927-4:2010 (E) DIN EN ISO 28927-4:2011-05 3Introduction This document is a type-C standard as stated in ISO 12100. When requirements of thi

36、s type-C standard are different from those which are stated in type-A or -B standards, the requirements of this type-C standard take precedence over the requirements of the other standards for machines that have been designed and built according to the requirements of this type-C standard. The vibra

37、tion test codes for portable hand-held machines given in ISO 28927 (all parts) are based on ISO 20643, which gives general specifications for the measurement of the vibration emission of hand-held and hand-guided machinery. ISO 28927 (all parts) specifies the operation of the machines under type-tes

38、t conditions and other requirements for the performance of type tests. The structure/numbering of its clauses follows that of ISO 20643. The basic principle for transducer positioning first introduced in the EN 60745 series of European standards is followed, representing a deviation from ISO 20643 f

39、or reasons of consistency. The transducers are primarily positioned next to the hand in the area between the thumb and the index finger, where they give the least disturbance to the operator gripping the machine. It has been found that vibrations generated by grinders vary considerably in typical us

40、e. The variation is largely due to the variances in the unbalance of the machine with the grinding wheel mounted. The unbalance also changes when the wheel is worn through the operation. In order to provide a method that gives good measurement reproducibility, the procedure adopted in this part of I

41、SO 28927 uses a test wheel of known unbalance mounted on a machine and run under no-load conditions. The unbalance for the different types of test wheels are chosen to give vibration values that are as far as possible in accordance with ISO 20643. The procedures of ISO 5349 (all parts) are required

42、whenever exposure at the workplace is to be assessed. Underestimation of the vibration for machines equipped with technical means to automatically reduce unbalances is taken into account by multiplying the vibration values of such machines with a correction factor of 1,3. The values obtained are typ

43、e-test values intended to be representative of the average of the upper quartile of typical vibration magnitudes in real-world use of the machines. However, the actual magnitudes vary considerably from time to time and depend on many factors, including the operator, the task and the inserted tool or

44、 consumable. The state of maintenance of the machine itself might also be of importance. Under real working conditions the influences of the operator and process can be particularly important at low magnitudes. It is therefore not recommended that emission values below 2,5 m/s2be used for estimating

45、 the vibration magnitude under real working conditions. In such cases, 2,5 m/s2is the recommended vibration magnitude for estimating the machine vibration. If accurate values for a specific work place are required, then measurements according to ISO 5349 (all parts) in that work situation could be n

46、ecessary. Vibration values measured in real working conditions can be either higher or lower than the values obtained using this part of ISO 28927. Higher vibration magnitudes can easily occur in real work situations caused by the use of excessively unbalanced grinding wheels, worn flanges or bent s

47、pindles. The vibration test codes given in ISO 28927 (all parts) supersede those given in ISO 8662 (all parts), which has been replaced by the corresponding parts of ISO 28927 (see Foreword). NOTE ISO 8662-11, Hand-held portable power tools Measurement of vibrations at the handle Part 11: Fastener d

48、riving tools could be replaced by a future part of ISO 28927. EN ISO 28927-4:2010 (E) DIN EN ISO 28927-4:2011-05 41 Scope This part of ISO 28927 specifies a laboratory method for measuring hand-transmitted vibration emission at the handles of straight grinders. It is a type-test procedure for establishing the magnitude of vibration in the gripping areas of a machine fitted with a specified test wheel and run under no-load conditions. This part of ISO 28927 is appli