BS-EN-ISO-8662-6-1995 ISO-8662-6-1994.pdf

BRITISH STANDARD BS EN ISO 8662-6:1995 ISO 8662-6: 1994 Hand-held portable power tools Measurement of vibrations at the handle Part 6: Impact drills The European Standard EN ISO 8662-6:1995 has the status of a British Standard Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:00:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 8662-6:1995 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 December 1995 © BSI 09-1999 The following BSI references relate to the work on this standard: Committee reference GME/21 Draft for comment 92/84672 DC ISBN 0 580 24874 7 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee GME/21, Mechanical vibration and shock, upon which the following bodies were represented: Federation of Civil Engineering Contractors Imperial College of Science, Technology and Medicine Institute of Sound and Vibration Research Institution of Mechanical Engineers Lloyds Register of Shipping Ministry of Defence Open University Power Generation Contractors Association (BEAMA Ltd.) Railway Industry Association of Great Britain Society of British Aerospace Companies Limited Society of Environmental Engineers The following bodies were also represented in the drafting of the standard, through subcommittees and panels: Agricultural Engineers Association British Aggregate Construction Materials Industries British Agricultural and Garden Machinery Association Ltd. British Compressed Air Society British Gas plc British Hydraulic Tool Manufacturers Association British Occupational Hygiene Society British Railways Board Department of the Environment (Building Research Establishment) Forestry Commission Health and Safety Executive Institute of Explosives Engineers Institute of Naval Medicine Institution of Electrical Engineers Medical Research Council Portable Electric Tool Manufacturers Association University College of Swansea University of Salford Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:00:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 8662-6:1995 © BSI 09-1999i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Introduction3 1Scope3 2Normative references3 3Quantity to be measured3 4Instrumentation3 5Measurement direction and measurement location4 6Determination of working procedure4 7Measurement procedure and validity of measurements6 8Test report6 Annex A (informative) Model test report for impact drills7 Annex ZA (normative) Normative references to international publications with their relevant European publications10 Figure 1 Example of position and fastening of transducer and measurement direction4 Figure 2 Working position of operator5 List of referencesInside back cover Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:00:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 8662-6:1995 ii © BSI 09-1999 National foreword This British Standard has been prepared by Technical Committee GME/21 and is the English language version of EN ISO 8662-6:1995 Hand-held portable power tools Measurement of vibrations at the handle Part 6: Impact drills published by the European Committee for Standardization (CEN). It is identical with ISO 8662-6:1994 published by the International Organization for Standardization (ISO). EN ISO 8662-6:1995 was produced as a result of international discussion in which the UK took an active part. Other Parts of ISO 8662 have been implemented in the BS EN 28662 series and the BS EN ISO 8662 series. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references Publication referred toCorresponding British Standard ISO 2787:1984BS 5344:1985 Methods for performance tests for rotary and percussive pneumatic tools EN 28662-1:1992BS EN 28662-1:1993 Hand-held portable power tools ISO 8662-1:1992Measurement of vibrations at the handle Part 1. General Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN ISO title page, pages 2 to 10, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:00:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN ISO 8662-6 April 1995 ICS 13.160; 25.140.10 Descriptors: Tools, power-operated tools, portable equipment, portable electric machine tools, percussive machines, drilling machines (tools), tests, vibration tests English version Hand-held portable power tools Measurement of vibrations at the handle Part 6: Impact drills (ISO 8662-6:1994) Machines à moteur portatives Mesurage des vibrations au niveau des poignées Partie 6: Perceuses à percussion (ISO 8662-6:1994) Handgehaltene motorbetriebene Maschinen Messung mechanischer Schwingungen am Handgriff Teil 6: Schlagbohrmaschinen (ISO 8662-6:1994) This European Standard was approved by CEN on 1995-02-15. 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 standards may be obtained on application to the Central Secretariat 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels © 1995 All rights of reproduction and communication in any form and by any means reserved in all countries to CEN and its members Ref. No. EN ISO 8662-6:1995 E Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:00:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8662-6:1995 © BSI 09-1999 2 Foreword The text of the International Standard ISO 8662-6:1994 has been prepared by Technical Committee ISO/TC 118, Compressors, pneumatic tools and pneumatic machines, in collaboration with CEN/TC 231, Mechanical vibration and shock. It has been submitted to Parallel Vote and has been approved by CEN on 1995-02-15 as a European Standard. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EC Directive(s). 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 October 1995, and conflicting national standards shall be withdrawn at the latest by October 1995. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. NOTENormative references to international publications are listed in Annex ZA (normative). Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:00:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8662-6:1995 © BSI 09-19993 Introduction This Part of ISO 8662, which specifies a type test for the measurement of vibrations at the handles of impact drills, supplements ISO 8662-1 which gives general specifications for the measurement of vibrations at the handles of hand-held portable power tools. It specifies the operation of the tool under the type test and other requirements for the performance of the type test. Impact drills are used for drilling of materials having a compressive strength of up to 50 N/mm2. The concrete wall chosen for the type test shall have a compressive strength of at least 40 N/mm2. Thus the method chosen is almost identical with a typical work situation. It specifies well-defined operating conditions and thus gives satisfactory repeatability; it is economical, as small quantities of concrete are consumed, and due to the low production of dust it has little harmful influence on the measurement site. These machines operate on the principle of a rotary cam lift mechanism which generates impacts that are transmitted to the outgoing shaft and drill bit. Impact drills are normally driven by electricity. For impact drills the magnitude of the impact energy is determined by the feed force. 1 Scope This part of ISO 8662 specifies a laboratory method of measuring the vibrations occurring at the handles of hand-held power driven impact drills. It is a type test procedure for establishing the magnitude of vibrations at the handles of impact drills operating under a specified load. It is intended that the results can be used to compare different power tools or different models of the same type of power tool. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 8662. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO 8662 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 679:1989, Methods of testing cements Determination of strength. ISO 2787:1984, Rotary and percussive pneumatic tools Performance tests. ISO 8662-1:1988, Hand-held portable power tools Measurement of vibrations at the handle Part 1: General. 3 Quantity to be measured The quantity to be measured is the acceleration, in accordance with ISO 8662-1:1988, 3.1, presented as a weighted acceleration in accordance with ISO 8662-1:1988, 3.3. NOTE 1The absence of d.c.-shift should be proved by frequency analysis or other means. 4 Instrumentation 4.1 General For specifications concerning instrumentation, see ISO 8662-1:1988, 4.1 to 4.6. 4.2 Transducer For specification of the transducer see ISO 8662-1:1988, 4.1. NOTE 2On a handle made of plastic, when the plastic itself functions as a mechanical filter, the total mass of transducer plus its mounting should be less than 5 g. 4.3 Fastening of transducer Fastening of transducer and mechanical filter (see Figure 1) shall be in accordance with ISO 8662-1:1988, 4.2. For plastic handles, a mechanical filter may not be necessary (ISO 8662-1:1988, 4.3). Small transducers may be glued to a flat surface using a suitable adhesive. If the handle has a soft resilient cover, this shall be removed (ISO 8662-1:1988, 4.3). 4.4 Auxiliary equipment The supply voltage of electrically powered tools shall be measured using instruments reading out r.m.s. values. The air or hydraulic pressure shall be measured using a manometer of precision class. The horizontal feed force shall be measured with a suitable measuring device (see 6.3 and Figure 2). 4.5 Calibration Calibration shall be carried out in accordance with ISO 8662-1:1988, 4.8. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:00:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8662-6:1995 4 © BSI 09-1999 5 Measurement direction and measurement location 5.1 Measurement direction Measurements shall be made parallel with the drill bit axis, i.e. in the z-direction (see Figure 1). 5.2 Measurement location Measurements shall be made on the main handle, by which the operator normally holds the tool and on which he applies the feed force. The transducer shall be placed as close as possible to the hand between the thumb and the index finger (see Figure 1). 6 Determination of working procedure 6.1 General Measurements shall be carried out on a new, properly serviced and lubricated power tool. During testing, the machine shall operate at rated power, i.e. rated voltage or rated pressure. It shall be used according to the manufacturers specifications. The operation shall be stable and regular (see 6.3). Performance data of the machine under test should be set so as to suit the characteristics of the drill bit used, as specified by the manufacturer (see 6.4). For the purposes of the test, the workpiece shall be arranged so that the operator stands and operates the machine horizontally at right angles to the surface of the wall while performing the test (see Figure 2). 6.2 Loading device During measurement, the operator shall drill into a wall of non-reinforced concrete having a compressive strength of at least 40 N/mm2 (after 28 days) and a maximum aggregate particle size of 4 mm. The strength of the wall shall be measured in accordance with ISO 679. 6.3 Feed force The feed force shall ensure that the machine exhibits stable operation at its normal level of performance. This is achieved by a feed force, FA, which shall be maintained within the range 150 N to 180 N for all impact drills. The feed force FA must be controlled during the test and its value shall be displayed to the operator. NOTE 3Not only the feed force but also the grip force on the handle have a considerable influence on the vibration level, especially when the tool is very light weight. At present it is not possible to measure the grip force using simple means. 6.4 Drill bit For the vibration test on impact drills, a new drill bit for concrete having a diameter of 8 mm and a working length of at least 80 mm shall be used. Figure 1 Example of position and fastening of transducer and measurement direction Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:00:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8662-6:1995 © BSI 09-19995 Figure 2 Working position of operator Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 02:00:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8662-6:1995 6 © BSI 09-1999 7 Measurement procedure and validity of measurements 7.1 Power supply The supply voltage of electrically powered machines shall be measured using instruments reading out r.m.s. values. The air pressure of pneumatically powered machines shall be measured in accordance w