1、 W 3Y04583 008982L 088 W EUROPEAN STANDARD EN 61176 NORME EUROPENNE EUROPISCHE NORM October 1993 UDC 62 1. P-182.4-87: 62 1.932: 620. I Dewriptciir;: Hand-held electric tools, perforniance, circular saws, methods of measurement, tests English version Hand-held electric mains voltage operated circula
2、r saws - Methods for measuring the performance (IEC 1176 : 1993) Scies circulaires lectroportatives alimentes sur le rseau - Mthodes de mesure de laptitude la fonction (CE1 1176 : 1993) Handgefhrte elektrisch betriebene Kreissgen - Prfverfahren zur Bestimmung der Gebrauchseigenschaften (IEC 1176 : 1
3、993) This European Standard was approved by CENELEC on 1993-07-06. CENELEC members are bound to comply with the CENKENELEC 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 bibliographi
4、cal 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, German). A version in any other language made by translation under the responsibility of a
5、CEXELEC member into its own language ancl notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Gerniany, Greece, Iceland, Irelancl, Italy, Luxembourg, Netherlands,
6、 Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fiir Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 9 1999 Copyrig
7、ht reserved to CENELEC membeis Ref. No. EN 61176 : 1993 E 3464583 0089822 Ti14 I Page 2 EN 61176 : 1993 Foreword The text of document 59J(C0)7, as prepared by Subcommittee 595: Handheld electric tools, of IEC Rchnical Committee 59: Performance of household electrical appliances, was submitted to the
8、 IEC-CENELEC parallel vote in July 1993. The reference document was approved by CENELEC as EN 61176 on 6 July 1993. The following dates were fixed: - latest date of publication of an identical national standard (dop) 1994-08-01 - latest date of withdrawal of conflicting national standards (dow) 1994
9、-08-01 Annexes designated normative are part of the body of the standard. In this standard, annex ZA is normative. - = 3404583 0089823 950 = Page 3 EN 61176 : 1993 CONTENTS Page Chuse Scope and object . , Normative references Definitions . General notes on measurements . Methods of measurement . Add
10、itional features to be re . Figures . Annex ZA Other international publications quoted in this standard with the references of the relevant European publications . . . . . . . . . . . . . . . . . . . . . . . . . . , , , . . . 4 4 4 6 7 12 13 17 m 3404583 0081824 817 Page 4 EN 61176 : 1993 HAND-HELD
11、ELECTRIC MAINS VOLTAGE OPERATED CIRCULAR SAWS - METHODS FOR MEASURING THE PERFORMANCE 1 Scope and object This International Standard applies to hand-held electrically operated circular saws, intended for household and similar use both indoor and outdoors. Hand-held electric motor-operated circular s
12、aws 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 standard. The object of this standard is to state and define the prin
13、cipal 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 prescribe limits of accep- tance for performance. Safety requirements for
14、 hand-held electric circular saws are covered by IEC 745-2-5. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication of this standard, the editions indicated w
15、ere 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 indicated below. Members of IEC and IS0 maintain registers of curre
16、ntly valid International Standards. IEC 160: 1963, Standard atmospheric conditions for test purposes. IEC 745-2-5: 1993, Safety of hand-held motor-operated electric tools - Part 2: Particular requirements for circular saws and circular knives. 3 Definitions For the purpose of this standard, the foll
17、owing definitions apply. 3.1 3.1 .i hand-held electric circular saws: Hand-held electric tool intended to execute mechanical work and so designed that the motor and the machine form an assembly that can easily be brought to its place of operation and which is held by hand during operation. Terms use
18、d to designate the hand-held electric tool and its spare parts Circular saws may also be mounted on a support. NOTE - In this standard, hand-held electric motor-operated circular saws“ are referred to as saws”. - 3904583 0089825 723 E Page 5 EN 61176 : 1993 3.1.2 blade: Detachable circular toothed t
19、ool 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 kn
20、ife: Metal part placed in the plane of the blade which prevents the wood from tightening on to the rear part of the blade. 3.2 3.2.1 rated frequency: Frequency assigned tot he saw by the manufacturer. Terms used to designate the characteristics of saws 3.2.2 rated voltage: Voltage assigned to the sa
21、w by the manufacturer. 3.2.3 rated input: Input at rated voltage assigned to the saw by the manufacturer. 3.3 3.3.1 Imitation blade: The steel disc to be fitted on the saw for measurements in place of the real blade. Terms used for measuring methods a) Its diameter is that of the maximum size blade
22、which can be fitted to the saw fl mm as specified by the manufacturer. b) Its thickness is that of the riving knife (+0,05 mm) or if no riving knife is provided: 0 2 127 mm thickness = 1,OO mm f 0,05 mm 127 200 mm . thickness = 2,OO mm f 0,05 mm c) Its flatness is: 0 I 127 mm . flatness = 0,lO mm 12
23、7 200 mm . flatness = 0,20 mm 3.3.2 straight cutting: Action of cutting when the blade is perpendicular to the guide plate. 3.3.3 angle cutting: Action of cutting with an angle different from 90“ between blade and guide plate. M 3404583 008182b bbT I Page 6 EN 61176 : 1993 4 General notes on measure
24、ments 4.1 List of measurements 4.1.1 4.1.2 4.1.3 4.1.4 4.1.5 4.1.6 4.1.7 4.1 -8 4.1.9 4.1.10 4.1.11 4.1.12 4.1.13 4.1.14 4.1.15 4.1.16 No load speed (5.1). Loaded speed (5.2). output (5.3). Efficiency (5.4). Dimensions (5.5). Cutting depth (5.6). Cutting accuracy (5.7). Ability to cut near obstacles
25、 (5.8). Guiding characteristics (5.9). Maximum cutting angle (5.10). Flexible cord length (5.1 1). Mass (5.12). Working rate (5.13). Reliability test (5.14). Noise level (5.15). Vibration level (5.1 6). 4.2 General conditions for measurements 4.2.1 Ambient temperature The room shall be maintained at
26、 20 OC f 5 OC according to IEC 160. 4.2.2 Voltage and frequency The measurements shall be carried out at rated voltage with a tolerance of I1 % 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.
27、Saws not marked with rated frequency shall be measured either at 50 Hz or at 60 Hz according to 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 o
28、f the range does not exceed 10 Oh of the mean value of the voltage range. If the difference between the limits exceeds 10 % of the mean value, the measurements shall be carried out at both the upper and the lower limit of the range. NOTE - If the rated voltage or the mear; of the voltage range diffe
29、rs from the nominal voltage system of the country concerned where the saw is to be used, measurements carried 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 vo
30、ltage, this shall be reported. Page 7 EN 61176 : 1993 4.2.3 Number of samples In order to prevent determination of the performance 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
31、rated input. NOTES 1 remaining measurements. 2 If the values measured are within 5 % of the mean value, one of the samples can be used for the An 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 I1 YO. 4.2.5 R
32、elative humidity This shall be maintained within 45 % and 75 %. 5 Methods of measurement 5.1 No load speed The no load speed is determined after the saw fitted with an imitation blade, has been operating idle for 15 min (disconnected from any connecting device with the brake). NOTE - A deviation of
33、215 96 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 operating for 30 min at rated voltage, and with the load that gives rated input. NOTE - A deviation of 510 % on loaded speed can be expected between the v
34、arious samples. 5.3 Output Loaded speeds and torques are measured at rated input. Output is calculated according to the formula: pout= 7 211n xT where n T pou, is the loaded speed in revolutions per minute (revlmin) is the torque in newton-meter (N.m) is the output in watts (W) Page 8 EN 61176 : 199
35、3 3404583 0087828 432 . 5.4 Efficiency The efficiency is calculated according to the formula: q= - pout x 100 Pin where Pi“ pout ti is the input in watts (W) is the output in watts (W) is the efficiency in per cent (%). 5.5 Dimensions Length, width and height are measured in millimetres. These dimen
36、sions are measured for minimum cutting depth and straight cut in the resting position (guard in closed position). They exclude the flexible cord, plug and cord protector Measurements are made parallel and perpendicular to the spindle axis and the guide plate as shown in figure 1. 5.6 Cutting depth T
37、he 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 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 accurac
38、y 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 01 between the edge of the guide plate and this blade, as shown in figure 2, with the blade rotated to give maximum angle. 5.7.2 Axial run-out is checked
39、 by measuring the total deviation on the imitation blade for 360“ rotation of the blade, as shown in figure 3, for any possible position of the inner flange. The measurement is made 5 mm from the edge of the disc. 5.7.3 Accuracy of the indication of cutting angle by the index is checked by comparing
40、 the value of the index indicator with the angle obtained with a cut into a piece of wood maximum 10 mm thinner than the indicated depth, as shown in figure 4. This test shall be carried out at angles of O“, 30, 45“ and at the maximum cutting angle. 5.7.4 When the depth index forms a part of the saw
41、, 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. - - 3409583 0087827 377 Page 9 EN 61176 : 1993 5.7.5 Accuracy of the blade position indicator. The saw being adjusted for a straight cut and being.gu
42、ided by the edge of the guide plate along a straight edge, a blind cut of 10 mm depth is made. The position of the index to the cut is noted after moving the saw backwards while. taking into account the indications given in the instruction sheet. 5.8 5.8.1 The ability to cut along walls is determine
43、d 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 in figure 5. Ability to cut near obstacles 5.8.2 The ability to cut toward walls is de
44、termined by measuring the minimum distance between the output spindle and the front of the guide plate for maximum cutting depth, as-; shown in figure 6. 5.9 Guiding characteristics The minimum and maximum positions on the left and on the right of the rip guide are measured. The extreme positions of
45、 the rip guide are the positions where it is still correctly fixed on the guide plate. The values recorded are the distances between the guiding surface of the rip guide and the centre line of the blade. 5.1 O Maximum cutting angle The maximum cutting angle is the angle measured between the real ver
46、tical position of the blade and the maximum inclination position of the blade. 5.1 1 Flexible cord length The flexible cord length is the distance between the point of entry into the hand-held electric tool and the face of the electric plug, or the end of the cable sheath if no plug is fitted, measu
47、red in metres. to the nearest 0,05 m. 5.1 2 Mass The mass is measured as for normal operation. The saw is fitted with all the safety elements (riving knife, guards, etc.) and other accessories necessary for normal use and delivered with the machine but detachable dust extraction accessories, blade,
48、flexible cord and plug are not included. 5.13 Working rate For working rate tests, the wood chosen for the workpiece is beech with a moisture content of 10 o/o to 16 % without splits or knots affecting the results. E 3484583 O089830 090 I Page 10 EN 61176 : 1993 The saw shall be equipped with the bl
49、ade recommended by the saw manufacturer in his catalogue for sawing beech or hard wood, all tests being carried out with the same blade. The tests shall be carried out in the following order: 5.1 3.1 The object of this test is to measure, in defined conditions, the cutting speed (feed) of the saw and to assess the quality of the work. During this test the input (in watts) is recorded. Sawing at half the maximum cutting depth 5.13.1.1 During this test, the saw is firmly fixed on a mobile table which is supported by rollers resting on the workpiece. T
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