1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 28927-4:2010Hand-held portable powertools Test methods forevaluation of vibrationemissionPart 4: Straight grinders (ISO28927-4:2010)BS EN ISO 28927-4:2010 BRITISH STAND
2、ARDNational forewordThis British Standard is the UK implementation of EN ISO28927-4:2010. Together with BS EN ISO 28927-1:2009, it supersedesBS EN ISO 8662-4:1995, which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee MCE/8/-/2, Hand-held, non-electric power
3、tools - Safety.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 59892 0ICS 13.160; 25.140.0
4、1Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 28 February 2011.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE
5、 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 portatives - Mthodes dessai pour lvaluation de lmissi
6、on 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 by CEN on 14 December 2010. CEN members are
7、 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 standards may be obtained on application to t
8、he 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 and notified to the CEN-CENELEC Management Cen
9、tre 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, Lithuania, Luxembourg, Malta, Netherlands, Nor
10、way, 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 CEN All rights of exploitation in any form
11、 and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 28927-4:2010: EBS EN ISO 28927-4:2010EN ISO 28927-4:2010 (E) 3 Foreword This document (EN ISO 28927-4:2010) has been prepared by Technical Committee ISO/TC 118 “Compressors and pneumatic tools, machines and equipment“ in
12、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 national standard, either by publication of an identical text or by endorsement, at the latest by June 2011, and conflictin
13、g 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 rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document toge
14、ther 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 Association, and supports essential requirements of EU Directive. For relationship with EU Directive, see informative Annex ZA,
15、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 this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France
16、, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 28927-4:2010 has been approved by CEN as a EN ISO 28927
17、-4:2010 without any modification. BS EN ISO 28927-4:2010EN ISO 28927-4:2010 (E) 4 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC This European Standard has been prepared under a mandate given to CEN by the European Commiss
18、ion and the European Free Trade Association to provide one means of conforming to Essential Requirements of the New Approach Directive 2006/42/EC on machinery. Once this standard is cited in the Official Journal of the European Union under that Directive and has been implemented as a national standa
19、rd in at least one Member State, compliance with the normative clauses of this standard confers, within the limits of the scope of this standard, a presumption of conformity with the corresponding Essential Requirement of that Directive, except ER 2.2.1.1, and associated EFTA regulations. WARNING Ot
20、her requirements and other EU Directives may be applicable to the product(s) falling within the scope of this standard. BS EN ISO 28927-4:2010ISO 28927-4:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv Introductionvi 1 Scope1 2 Normative references1 3 Terms, definitions and symbols
21、 2 3.1 Terms and definitions .2 3.2 Symbols2 4 Basic standards and vibration test codes 3 5 Description of the family of machines 3 6 Characterization of vibration4 6.1 Direction of measurement 4 6.2 Location of measurements.4 6.3 Magnitude of vibration5 6.4 Combination of vibration directions5 7 In
22、strumentation requirements .5 7.1 General .5 7.2 Mounting of transducers 5 7.3 Frequency-weighting filter6 7.4 Integration time6 7.5 Auxiliary equipment 6 7.6 Calibration6 8 Testing and operating conditions of the machinery6 8.1 General .6 8.2 Operating conditions 7 8.3 Other quantities to be specif
23、ied.7 8.4 Attached equipment, work piece and task7 8.5 Operator .10 9 Measurement procedure and validity10 9.1 Reported vibration values 10 9.2 Declaration and verification of the vibration emission value .11 10 Measurement report11 Annex A (informative) Model test report for vibration emission of s
24、traight grinders13 Annex B (normative) Determination of uncertainty 15 Annex C (normative) Design of test wheel.17 Bibliography23 BS EN ISO 28927-4:2010ISO 28927-4:2010(E) iv ISO 2010 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of na
25、tional standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out 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. Intern
26、ational organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the
27、rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by
28、at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements 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 28927-4 was prepared by Technical Committee IS
29、O/TC 118, Compressors and pneumatic tools, machines and equipment, Subcommittee SC 3, Pneumatic tools and machines. This first edition of ISO 28927-4, together with ISO 28927-1, cancels and replaces ISO 8662-4:1994, of which it constitutes a technical revision. The most important changes are vibrati
30、on measurement in three axes and at both hand positions; new transducer locations with improved definitions of the transducer positions and orientation are used; rotational speed is raised to no load free running speed; the test wheels are modified and the definition is improved. ISO 28927 consists
31、of the following parts, under the general title Hand-held portable power tools Test methods for evaluation of vibration emission: Part 1: Angle and vertical grinders Part 2: Wrenches, nutrunners and screwdrivers1) Part 3: Polishers and rotary, orbital and random orbital sanders2) Part 4: Straight gr
32、inders3) Part 5: Drills and impact drills4)1) Replaces ISO 8662-7, Hand-held portable power tools Measurement of vibrations at the handle Part 7: Wrenches, screwdrivers and nut runners with impact, impulse or ratchet action. All screwdrivers and nutrunners except for one-shot tools now covered. 2) R
33、eplaces ISO 8662-8, Hand-held portable power tools Measurement of vibrations at the handle Part 8: Polishers and rotary, orbital and random orbital sanders. 3) Together with ISO 28927-1, replaces ISO 8662-4, Hand-held portable power tools Measurement of vibrations at the handle Part 4: Grinders. BS
34、EN ISO 28927-4:2010ISO 28927-4:2010(E) ISO 2010 All rights reserved v Part 6: Rammers5) Part 7: Nibblers and shears6) Part 8: Saws, polishing and filing machines with reciprocating action and small saws with oscillating or rotating action7) Part 9: Scaling hammers and needle scalers8) Part 10: Percu
35、ssive drills, hammers and breakers9) Part 11: Stone hammers10) Part 12: Die grinders11)4) Replaces ISO 8662-6, Hand-held portable power tools Measurement of vibrations at the handle Part 6: Impact drills. Non-impacting drills now covered. 5) Replaces ISO 8662-9, Hand-held portable power tools Measur
36、ement of vibrations at the handle Part 9: Rammers. 6) Replaces ISO 8662-10, Hand-held portable power tools Measurement of vibrations at the handle Part 10: Nibblers and shears. 7) Replaces ISO 8662-12, Hand-held portable power tools Measurement of vibrations at the handle Part 12: Saws and files wit
37、h reciprocating action and saws with oscillating or rotating action. 8) Together with ISO 28927-11 (to be published), replaces ISO 8662-14, Hand-held portable power tools Measurement of vibrations at the handle Part 14: Stone-working tools and needle scalers. 9) To be published. Replaces ISO 8662-2,
38、 Hand-held portable power tools Measurement of vibrations at the handle Part 2: Chipping hammers and riveting hammers, ISO 8662-3, Hand-held portable power tools Measurement of vibrations at the handle Part 3: Rock drills and rotary hammers, and ISO 8662-5, Hand-held portable power tools Measurement
39、 of vibrations at the handle Part 5: Pavement breakers and hammers for construction work. It also incorporates the Amendments ISO 8662-2:1992/Amd.1:1999, ISO 8662-3:1992/Amd.1:1999 and ISO 8662-5:1992/Amd.1:1999. Chipping and riveting hammers, rock drills and rotary hammers all covered. 10) To be pu
40、blished. Together with ISO 28927-9, replaces ISO 8662-14, Hand-held portable power tools Measurement of vibrations at the handle Part 14: Stone-working tools and needle scalers. 11) To be published. Replaces ISO 8662-13, Hand-held portable power tools Measurement of vibrations at the handle Part 13:
41、 Die grinders. It also incorporates the Technical Corrigendum ISO 8662-13:1997/Cor.1:1998. BS EN ISO 28927-4:2010ISO 28927-4:2010(E) vi ISO 2010 All rights reservedIntroduction This document is a type-C standard as stated in ISO 12100. When requirements of this type-C standard are different from tho
42、se 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 vibration test codes for portable hand-held m
43、achines 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-test conditions and other requirements for
44、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 for reasons of consistency. The transduce
45、rs 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 use. The variation is largely due to the v
46、ariances 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 ISO 28927 uses a test wheel of known unba
47、lance 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 whenever exposure at the workplace is to
48、 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 type-test values intended to be representat
49、ive 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 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 therefo
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