1、BRITISH STANDARD BS EN 61176:1994 IEC1176:1993 Hand-held electric mains voltage operated circular saws Methods for measuring the performance The European Standard EN61176:1993 has the status of a BritishStandard UDC 621.9-182.4-83:621.932:620.1BSEN 61176:1994 This BritishStandard, having been prepar
2、ed under the directionof the Light ElectricalEngineering StandardsPolicy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 15February1994 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference LEL/59 Draft for comment
3、 85/31641 DC ISBN 0 580 22917 3 Cooperating organizations The European Committee for Electrotechnical Standardization (CENELEC), under whose supervision this European Standard was prepared, comprises the national committees of the following countries: Austria Italy Belgium Luxembourg Denmark Netherl
4、ands Finland Norway France Portugal Germany Spain Greece Sweden Iceland Switzerland Ireland UnitedKingdom Amendments issued since publication Amd. No. Date CommentsBSEN 61176:1994 BSI 01-2000 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Text of EN 6117
5、6 3 National annex NA (informative) Committees responsible Inside back coverBSEN 61176:1994 ii BSI 01-2000 National foreword This BritishStandard has been prepared under the direction of the Light Electrical Engineering Standards Policy Committee and is the English language version of EN61176:1993 H
6、and-held electric mains voltage operated circular saws Methods for measuring the performance, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC1176:1993 published by the International Electrotechnical Commission (IEC). Safety requirements fo
7、r circular saws are covered by BS2769 Hand-held electric motor-operated tools Section2.5:1991 Specification for circular saws and circular knives. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct a
8、pplication. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, the EN title page, pages2 to14, an inside back cover and a back cover. This standard has been updated
9、 (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61176 October 1993 UDC 621.9-182.4-83:621.932:620.1 Descriptors: Hand-held electric tools, performance, circula
10、r saws, methods of measurement, tests English version Hand-held electric mains voltage operated circular saws Methods for measuring the performance (IEC1176:1993) Scies circulaires lectroportatives alimentes sur le rseau Mthodes de mesure de laptitude la fonction (CEI1176:1993) Handgefhrte elektrisc
11、h betriebene Kreissgen Prfverfahren zur Bestimmung der Gebrauchseigenschaften (IEC1176:1993) This European Standard was approved by CENELEC on1993-07-06. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the
12、 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 CENELEC member. This European Standard exists in three official versions (English, French, Ger
13、man). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark
14、, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnisc
15、he Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1993 Copyright reserved to all CENELEC members Ref. No. EN61176:1993 EEN 61176:1993 BSI 01-2000 2 Foreword The text of document59J(CO)7, as prepared by Subcommittee59J: Handheld electric tools, of IEC Technical Committee59: Performa
16、nce of household electrical appliances, was submitted to the IEC-CENELEC parallel vote in July1993. The reference document was approved by CENELEC as EN61176 on6 July1993. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. In this standard, Annex ZA
17、is normative. Contents Page Foreword 2 1 Scope and object 3 2 Normative references 3 3 Definitions 3 4 General notes on measurements 4 5 Methods of measurement 5 6 Additional features to be reported 8 Annex ZA (normative) Other international publications quoted in this standard with the references o
18、f the relevant European publications 14 Figure 1 Dimensions 9 Figure 2 Cutting accuracy 10 Figure 3 Axial run-out 10 Figure 4 Accuracy of the indication of the cutting angle 11 Figure 5 Ability to cut along walls 11 Figure 6 Ability to cut towards walls 12 Figure 7 Test rig 13 latest date of publica
19、tion ofan identical national standard (dop)1994-08-01 latest date of withdrawal ofconflicting national standards (dow)1994-08-01EN 61176:1993 BSI 01-2000 3 1 Scope and object This International Standard applies to hand-held electrically operated circular saws, intended for household and similar use
20、both indoor and outdoors. Hand-held electric motor-operated circular saws that can be mounted on a support for use as fixed tools, without any fundamental alterations of the circular saw itself, are within the scope of this standard. Circular saw attachments and cut-off discs are not covered by this
21、 standard. The object of this standard is to state and define the principal performance characteristics of circular saws that are of interest to the user and to describe the standardized methods for measuring these characteristics. This standard does not deal with safety requirements nor does it pre
22、scribe limits of acceptance for performance. Safety requirements for hand-held electric circular saws are covered by IEC745-2-5. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. At
23、 the time of publication of this standard, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents
24、indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. IEC160:1963, Standard atmospheric conditions for test purposes. IEC745-2-5:1993, Safety of hand-held motor-operated electric tools Part2: Particular requirements for circular saws and circular kniv
25、es. 3 Definitions For the purpose of this standard, the following definitions apply. 3.1 Terms used to designate the hand-held electric tool and its spare parts 3.1.1 hand-held electric circular saws hand-held electric tool intended to execute mechanical work and so designed that the motor and the m
26、achine form an assembly that can easily be brought to its place of operation and which is held by hand during operation circular saws may also be mounted on a support NOTEIn this standard, “hand-held electric motor-operated circular saws” are referred to as “saws”. 3.1.2 blade detachable circular to
27、othed tool that performs the sawing operation 3.1.3 main handle handle to which the main effort is applied. It incorporates the switch-actuating means 3.1.4 auxiliary handle handle which can be attached to the saw for handling or safety reasons, and which can be removed if necessary 3.1.5 riving kni
28、fe metal part placed in the plane of the blade which prevents the wood from tightening on to the rear part of the bladeEN 61176:1993 4 BSI 01-2000 3.2 Terms used to designate the characteristics of saws 3.2.1 rated frequency frequency assigned tot he saw by the manufacturer 3.2.2 rated voltage volta
29、ge assigned to the saw by the manufacturer 3.2.3 rated input input at rated voltage assigned to the saw by the manufacturer 3.3 Terms used for measuring methods 3.3.1 imitation blade the steel disc to be fitted on the saw for measurements in place of the real blade a) Its diameter is that of the max
30、imum size blade which can be fitted to the saw 1mm as specified by the manufacturer. b) Its thickness is that of the riving knife(+0,05mm) or if no riving knife is provided: c) Its flatness is: 3.3.2 straight cutting action of cutting when the blade is perpendicular to the guide plate 3.3.3 angle cu
31、tting action of cutting with an angle different from90 between blade and guide plate 4 General notes on measurements 4.1 List of measurements 4.1.1 No load speed(5.1) 4.1.2 Loaded speed(5.2) 4.1.3 Output(5.3) 4.1.4 Efficiency(5.4) 4.1.5 Dimensions(5.5) 4.1.6 Cutting depth(5.6) 4.1.7 Cutting accuracy
32、(5.7) 4.1.8 Ability to cut near obstacles(5.8) 4.1.9 Guiding characteristics(5.9) 4.1.10 Maximum cutting angle(5.10) 4.1.11 Flexible cord length(5.11) 4.1.12 Mass(5.12) k 127mm thickness=1,00mm 0,05mm 127200mm thickness=2,00mm 0,05mm k 127mm flatness=0,10mm 127200mm flatness=0,20mmEN 61176:1993 BSI
33、01-2000 5 4.1.13 Working rate(5.13) 4.1.14 Reliability test(5.14) 4.1.15 Noise level(5.15) 4.1.16 Vibration level(5.16) 4.2 General conditions for measurements 4.2.1 Ambient temperature The room shall be maintained at20 C 5 C according to IEC160. 4.2.2 Voltage and frequency The measurements shall be
34、 carried out at rated voltage with a tolerance of 1% and, if applicable, at rated frequency. Saws designed for d.c. only shall be measured with d.c. Saws designed for a.c. and d.c. shall be measured with a.c. Saws not marked with rated frequency shall be measured either at50Hz or at60Hz according to
35、 usage in the country where the machine is employed. For saws with a rated voltage range, the measurements shall be carried out at the mean value of the voltage range if the difference between the limits of the range does not exceed10% of the mean value of the voltage range. If the difference betwee
36、n the limits exceeds10% of the mean value, the measurements shall be carried out at both the upper and the lower limit of the range. NOTEIf the rated voltage or the mean of the voltage range differs from the nominal voltage system of the country concerned where the saw is to be used, measurements ca
37、rried out at rated voltage or the mean of the voltage range may be misleading for the consumer. In this case additional measurements may be necessary. If the test voltage differs from the rated voltage, this shall be reported. 4.2.3 Number of samples In order to prevent determination of the performa
38、nce of a saw from a sample having variations, the following measurements shall be carried out on two samples: input under no load condition; speed under load that gives rated input. NOTE 1If the values measured are within5% of the mean value, one of the samples can be used for the remaining measurem
39、ents. NOTE 2An additional sample may be used for the life test. 4.2.4 Rated input The measurements shall be carried out at rated input with a tolerance of 1%. 4.2.5 Relative humidity This shall be maintained within45% and75%. 5 Methods of measurement 5.1 No load speed The no load speed is determined
40、 after the saw fitted with an imitation blade, has been operating idle for15min (disconnected from any connecting device with the brake). NOTEA deviation of 15% on rated no load speed can be expected between the various samples. 5.2 Loaded speed The loaded speed is determined after the saw has been
41、operating for30min at rated voltage, and with the load that gives rated input. NOTEA deviation of 10% on loaded speed can be expected between the various samples.EN 61176:1993 6 BSI 01-2000 5.3 Output Loaded speeds and torques are measured at rated input. Output is calculated according to the formul
42、a: 5.4 Efficiency The efficiency is calculated according to the formula: 5.5 Dimensions Length, width and height are measured in millimetres. These dimensions are measured for minimum cutting depth and straight cut in the resting position (guard in closed position). They exclude the flexible cord, p
43、lug and cord protector. Measurements are made parallel and perpendicular to the spindle axis and the guide plate as shown inFigure 1. 5.6 Cutting depth The cutting depth is measured from the bottom of the guide plate to the tangent to the outside circumference of the imitation blade parallel to the
44、guide plate. The maximum and minimum cutting depths are measured for straight cut and for the maximum inclination angle of the blade. 5.7 Cutting accuracy 5.7.1 Parallelism between the guide plate edge and the plane of the saw blade is measured by fitting the imitation blade and measuring the angle!
45、 between the edge of the guide plate and this blade, as shown inFigure 2, with the blade rotated to give maximum angle. 5.7.2 Axial run-out is checked by measuring the total deviation on the imitation blade for360 rotation of the blade, as shown inFigure 3, for any possible position of the inner fla
46、nge. The measurement is made5mm from the edge of the disc. 5.7.3 Accuracy of the indication of cutting angle by the index is checked by comparing the value of the index indicator with the angle obtained with a cut into a piece of wood maximum10mm thinner than the indicated depth, as shown inFigure 4
47、. This test shall be carried out at angles of0,30,45 and at the maximum cutting angle. 5.7.4 When the depth index forms a part of the saw, accuracy of indication of depth is checked by comparing the index indication with a blind cut into a piece of wood thicker than the indicated depth. 5.7.5 Accura
48、cy of the blade position indicator. The saw being adjusted for a straight cut and being guided by the edge of the guide plate along a straight edge, a blind cut of10mm depth is made. The position of the index to the cut is noted after moving the saw backwards while, taking into account the indicatio
49、ns given in the instruction sheet. 5.8 Ability to cut near obstacles 5.8.1 The ability to cut along walls is determined by measuring the minimum distance between the median plan of the imitation blade to the plan passing by the closest part of the saw, or the side of the guide plate, with the blade set for a straight cut as shown inFigure 5. where n is the loaded speed in revolutions per minute (rev/min) T is the torque in newton-meter (N.m) p out is the output in watts (W) where p in is the input in watts (W) p
