EN 1870-17:2007

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Sicherheit von Holzbearbeitungsmaschinen - Kreissägemaschinen - Teil 17: Handbetätigte waagerecht schneidende Auslegerkreissägemaschinen mit einem Sägeaggregat (handbetätigte Radialsägen)Sécurité des machines pour le travail du bois - Machines a scies circulaires - Partie 17: Tronçonneuses manuelles a coupe horizontale avec une unité de sciage (scies circulaires radiales manuelles)Safety of woodworking machines - Circular sawing machines - Part 17: Manual horizontal cutting cross-cut sawing machines with one saw unit (manual radial arm saws)79.120.10Lesnoobdelovalni strojiWoodworking machines25.080.60Strojne žageSawing machinesICS:Ta slovenski standard je istoveten z:EN 1870-17:2007SIST EN 1870-17:2007en01-maj-2007SIST EN 1870-17:2007SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1870-17February 2007ICS 79.120.10 English VersionSafety of woodworking machines - Circular sawing machines -Part 17: Manual horizontal cutting cross-cut sawing machineswith one saw unit (manual radial arm saws)Sécurité des machines pour le travail du bois - Machines àscies circulaires - Partie 17: Tronçonneuses manuelles àcoupe horizontale avec une unité de sciage (sciescirculaires radiales manuelles)Sicherheit von Holzbearbeitungsmaschinen -Kreissägemaschinen - Teil 17: Handbetätigte waagerechtschneidende Auslegerkreissägemaschinen mit einemSägeaggregat (handbetätigte Radialsägen)This European Standard was approved by CEN on 4 February 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1870-17:2007: ESIST EN 1870-17:2007

Stability test for displaceable
machines.35 Annex B (normative)
Saw spindle dimensional tolerances.36 Annex C (normative)
Impact test method for guards.37 C.1 General.37 C.2 Test method.37 SIST EN 1870-17:2007

Use of well tried components.40 Annex E (normative) Brake tests.41 E.1 Conditions for all tests.41 E.2 Tests.41 E.2.1 Un-braked run-down time.41 E.2.2 Braked run-down time.41 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of
EU Directive 98/37.42 Bibliography.45
The European Standards produced by CEN/TC 142 are particular to woodworking machines and complement the relevant A and B standards on the subject of general safety (see Introduction of EN ISO 12100-1:2003 for a description of A, B and C standards). 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, 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, Switzerland and United Kingdom. SIST EN 1870-17:2007

3.2 Definitions 3.2.1 cross-cutting operation of cutting across the longitudinal workpiece dimension SIST EN 1870-17:2007

NOTE
The saw blade is not in the rest position. Figure 1 — Example 1 of a manual horizontal cutting cross-cut circular sawing machine with one saw unit (manual radial arm saw) SIST EN 1870-17:2007

Figure 2 — Example 2 of a manual horizontal cutting cross-cut circular sawing machine with one saw unit (manual radial arm saw) 3.2.3 stationary machine machine designed to be located on or fixed to the floor or other parts of the structure of the premises and to be stationary during use 3.2.4 displaceable machine machine which is located on the floor, stationary during use and equipped with a device, normally wheels, which allow it to be moved between locations 3.2.5 hand feed of the saw unit manual movement of the saw unit incorporating the saw blade along the forward arm of the machine in direction of the feed movement 3.2.6 machine actuator power mechanism used to effect motion of the saw blade
3.2.7 cutting area of the saw blade area below the maximum upper cutting line of the workpiece
3.2.8 non-cutting area of the saw blade area above the maximum upper cutting line of the workpiece
3.2.10 un-braked run-down time time elapsed from the actuation of the stop control device but not the braking device (if fitted) up to spindle standstill 3.2.11 braked run-down time time elapsed from the actuation of the stop control and the braking device up to spindle standstill 3.2.12 information from the supplier statements, sales literature, leaflets or other documents where a manufacturer (supplier) declares either the characteristics or the compliance of the material or product to a relevant standard 4 List of significant hazards This clause contains the significant hazards, hazardous situations and events (see EN 1050:1996) as far as they are dealt with in this document, identified by risk assessment as significant for the machines as defined in the scope and which require action to eliminate or reduce the risk by defining safety requirements and/or measures or by reference to relevant standards. NOTE
These hazards are listed in Table 1 in accordance with Annex A of EN 1050:1996. SIST EN 1870-17:2007

No Hazards, hazardous situations and hazardous events
EN ISO 12100 Relevant clause of this document
Part 1:2003 Part 2:2003
1 Mechanical hazards related to: - machine parts or workpieces:
a) shape; 5.3.3, 5.3.5, 5.3.7, 5.4.5
b) relative location; 5.2.2, 5.3.3, 5.3.5, 5.3.6, 5.3.7, 5.4.3, 5.4.5
d) mass and velocity (kinetic energy of elements in controlled or uncontrolled motion); 5.3.3, 5.3.7
e) mechanical strength. 4.2 4.2.1, 4.2.2, 5 5.3.2, 5.3.3
- accumulation of energy inside the machinery:
f) elastic elements (springs); 5.3.3.5
g) gases under pressure; 4.2 4.10, 5.5.4 5.2.5, 5.3.7, 5.4.12 1.1 Crushing hazard 5.3.6 1.2 Shearing hazard 5.3.6 1.3 Cutting or severing hazard 5.3.3.5, 5.3.3.6, 5.3.6 1.4 Entanglement hazard 5.3.6 1.5 Drawing-in or trapping hazard 5.3.6 1.6 Impact hazard 5.3.7 1.7 Stabbing or puncture hazard 5.3.6.1 1.8 Friction or abrasion hazard 4.2.1
5.3.6.1 1.9 High pressure fluid injection or ejection hazard
4.2.1 3.8 5.4.6
2 Electrical hazards due to: 2.1 Contact of persons with live parts (direct contact) 4.3 4.9, 5.5.4 5.4.4 2.2 Contact of persons with parts which have become live under faulty conditions (indirect contact) 4.3 4.9 5.4.4 2.4 Electrostatic phenomena 4.3 4.9 5.4.9 SIST EN 1870-17:2007

No Hazards, hazardous situations and hazardous events
EN ISO 12100 Relevant clause of this document
Part 1:2003 Part 2:2003
4 Hazards generated by noise, resulting in: 4.1 Hearing loss (deafness), other physiological disorders (loss of balance, loss of awareness) 4.5 4.2.2, 5 5.4.2 4.2 Interference with speech communication, acoustic signals.
5.4.2 6 Hazards generated by radiation 6.5 Lasers 4.7
5.4.8 7 Hazards generated by materials and substances (and their constituent elements) processed or used by the machinery 7.1 Hazards from contact with or inhalation of harmful fluids and dusts 4.8 4.3b, 4.4
5.4.3 7.2 Fire hazard 4.8 4.4
5.4.1 8 Hazards generated by neglecting ergonomic principles in machinery design
8.1 Unhealthy postures or excessive effort 4.9 4.7, 4.8.2, 4.11.12, 5.5.5, 5.5.6
5.2.2, 5.4.5 8.2 Hand-arm or foot-leg anatomy 4.9 4.8.3
5.4.5 8.6 Human error, human behaviour 4.9 4.8, 4.11.8, 4.11.10, 5.5.2, 6 5.2.1, 5.2.3, 5.4.10 8.7 Design, location or identification of manual controls
4.8.7, 4.11.8
5.2.2, 5.4.11 8.8 Design or location of visual display units
4.8.8, 6.2 5.3.3.5, 5.4.5
No Hazards, hazardous situations and hazardous events
EN ISO 12100 Relevant clause of this document
Part 1:2003 Part 2:2003
10 Unexpected start-up, unexpected overrun/overspeed (or any similar malfunction) from: 10.1 Failure/disorder of the control system
4.11, 5.5.4
5.2.1, 5.2.6 10.2 Uncontrolled restoration of energy supply after an interruption
4.11.4
5.2.5 10.3 External influences on electrical equipment
4.11.11 5.4.7 10.6 Errors made by the operator (due to mismatch of machinery with human characteristics and abilities, see 8.6) 4.9 4.8, 4.11.8, 4.11.10, 5.5.2, 6
5.4.10, 6.3 11 Impossibility of stopping the machine in the best possible conditions
4.11.1, 4.11.3, 5.5.2
5.2.4, 5.3.4 13 Failure of the power supply
4.11.1, 4.11.4
5.2.5 14 Failure of the control circuit
4.11, 5.5.4
5.2.1, 5.2.6 15 Errors of fitting 4.9
4.7, 6.5
5.4.10 16 Break-up during operation 4.2.2 4.3
5.3.2, 5.3.3 17 Falling or ejected objects
4.2.2 4.3, 4.10
5.3.3.5 18 Loss of stability / overturning of machinery 4.2.2 5.2.6
5.3.1 5 Safety requirements and/or measures 5.1 General The machine shall comply with the safety requirements and/or protective measures of Clause 5.
NOTE 1 For guidance in connection with risk reduction by design, see Clause 4 of EN ISO 12100-2:2003, and for safeguarding measures, see Clause 5 of EN ISO 12100-2:2003. NOTE 2 In addition, the machine should be designed in accordance with the principles of EN ISO 12100:2003 (parts 1 and 2) for hazards relevant but not significant, which are not dealt with by this document (e.g. sharp edges of the machine frame). SIST EN 1870-17:2007

6.3 of EN ISO 13849-1:2006 gives useful information on combination of safety-related parts to the same or different categories. Verification: By checking the relevant drawings and/or circuit diagrams and inspection of the machine. 5.2.1.2 Use of well-tried components Components are considered well-tried if they comply with 6.2.4 of EN ISO 13849-1:2006: (see also Annex D).
NOTE 1 Well-tried electrical components are listed in Table D.3 of EN ISO 13849-2:2003. NOTE 2
EN ISO 13849-2:2003 gives useful information on assessment of well-tried components, possible exclusion of faults etc. Time delay devices used in hard wired safety related control circuits shall be of failsafe technique e.g. of capacity type or conform to category 3 of EN ISO 13849-1:2006. Verification: By checking the relevant drawings and/or circuit diagrams and inspection of the machine.
5.2.2 Position of controls The start and stop control for the saw spindle drive motor shall be situated either: a) incorporated in, or adjacent to the operating handle of the machine but not more than 600 mm from front edge of the workpiece support when the saw unit is in its rest position; or b) at the front of the machine below the workpiece support and at a minimum height of 600 mm from the floor level and within 1, 0 m of the cutting line when it is at 90° to the fence. If fitted with pneumatic workpiece clamping the controls for clamping and unclamping shall be either: SIST EN 1870-17:2007

at a minimum height of 600 mm from the floor level and within 1, 0 m of the cutting line when it is at 90° to the fence; or 2) where a
foot pedal is used, situated on the floor within 1,0 m of the cutting line when it is at 90° to the fence; 3) where a switch which is operated automatically, situated at the beginning of a stroke. Where a foot pedal is used to control powered workpiece clamping it shall be shrouded against unintentional activation. The force required to actuate the foot pedal shall not exceed 350 N. The switching device of the foot pedal shall be hardwired and the safety related parts of the control system shall conform to category 1 in accordance with the requirements of EN ISO 13849-1:2006. Verification: By checking the relevant drawings, measurement and inspection of the machine. 5.2.3 Starting Before starting or restarting the machine all the safeguards shall be in place and functional. This is achieved by the interlocking arrangement described in 5.3.6 and “operation” means rotation of the saw blade. Start or restart shall only be possible by actuation of the start control device provided for that purpose. For electrically operated machines the requirements of 9.2.5.2 of EN 60204-1:2006 apply but 9.2.4 of EN 60204-1:2006 does not apply. The safety related part of the control system for starting the rotation of the spindle (see 5.2.1) shall conform to category 1 in accordance with the requirements of EN ISO 13849-1:2006. The requirements shall be met at the level of the control circuits. Verification: By checking the relevant drawings and/or circuit diagrams, inspection of the machine and relevant functional testing of the machine.
5.2.4 Normal stopping The machine shall be fitted with a stop control system where by the machine can be brought safely to a complete stop. The stopping action shall include disconnection from energy supply of all actuators and actuate the brake (if provided-see 5.3.4). The normal stop control systems for machines fitted with spring operated mechanical brake shall comply with stop category 0 in accordance with the requirements in 9.2.2 of EN 60204-1:2006. The normal stop control system for machines fitted with any other type of brake e.g. electrical brake shall comply with stop category 1 in accordance with the requirements in 9.2.2 of EN 60204-1:2006. Where a category 1 stop control is fitted, the stopping sequence shall be: a) cut power to all machine actuators
except workpiece clamping (if fitted) and actuate the brake; b) cut power to brake(s) (if electrical brake is fitted) after the saw spindle has come to rest e.g. by using a time delay in accordance with 5.2.1.2; The design of the control circuits shall be such as to satisfy the normal stopping sequence. If a time delay device is used, time delay shall at least equal the maximum run-down time. Either the time delay shall be fixed, or the time delay adjustment device shall be sealed. SIST EN 1870-17:2007

In the event of loss of pneumatic pressure, clamping of the workpiece shall be maintained until the return stroke of the tool is initiated. Where non-return valves are used to meet this requirement, they shall be fitted to the actuating cylinder.
Also see 5.2.1. Verification: By checking the relevant drawings and/or circuit diagrams, inspection of the machine and relevant functional testing of the machine. 5.3 Protection against mechanical hazards 5.3.1 Stability It shall be possible to fix stationary machines to a suitable stable structure e.g. floor. Facilities for fixing are e.g. fixing holes in the machine frame (also see 6.3 h)). Displaceable machines fitted with wheels shall have the facility to make them stable during cutting. Such facilities are e.g.: a) brakes for the wheels; or b) a combination of wheels and stabilisers ; or c) a device to retract the wheels from the floor. Verification:
By checking relevant drawings, inspection on the machine and performing the stability test described in Annex A.
5.3.2 Risk of break-up during operation The guards for the saw blade shall be manufactured from materials with at least the following properties: a) steel with an ultimate tensile strength of at least 350 N mm-2 and a wall thickness of at least 1, 5 mm; b) light alloy with characteristics in accordance with Table 2; SIST EN 1870-17:2007

Table 2 — Characteristics of light alloy saw-blade guards Ultimate tensile strength N mm-2 Minimum thickness mm 180 5 240 4 300 3 360 2
c) polycarbonate with a wall thickness of at least 3 mm or other plastic material (e.g. polyethylene, polyester, polyvinyl chloride, polymethylmetacrylate) having an impact resistance equal or better than 3 mm polycarbonate; d) cast iron with an ultimate tensile strength of at least 200 N mm-2 and a wall thickness of at least 5 mm. Verification: By checking the relevant drawings, tensile strength, measurement, performing the test in Annex B and inspection of the machine NOTE For the ultimate tensile strength a confirmation from the manufacturer of the material can be useful.
5.3.3 Tool holder and tool design 5.3.3.1 Saw blade design The requirements of EN 847-1:2005 apply. Also see 6.3 j). Verification: By checking the relevant drawings and inspection of the machine. 5.3.3.2 Saw spindle design The saw spindle shall be manufactured: a) in steel with an ultimate tensile strength of at least 580 N mm-2; and
b) to at least the tolerances given in Annex B. The direction of the rotation of the saw spindle shall be such, that the cutting force of the saw blade is directed against the fence. Verification: By checking the relevant drawings, measurement, and relevant functional testing of the machine. NOTE
For the ultimate tensile strength a confirmation from the manufacturer of the material can be useful.
5.3.3.3 Spindle locking When it is necessary to hold the spindle stationary for saw blade changing, a spindle holding/blocking device shall be provided e.g. a set of two separate spanners or an integral locking bar inserted through the spindle. .When a blocking device is used it shall prevent tool spindle rotation and shall not be deformed after starting the spindle drive motor, with the blocking device in place. Verification: By checking the relevant drawings, inspection of the machine, measurement and relevant functional testing of the machine. SIST EN 1870-17:2007

The machine shall be designed so that it is not possible to mount saw blades with a greater cutting width than 6 mm. Two saw flanges shall be provided which fulfil the following requirements: a) for saw blades the outside diameter of both flanges shall be at least D/6 and not less than 50 mm (where D = the diameter of the largest saw blade for which the machine is designed); b) the tolerance of the outside diameters shall be within ± 1 mm; c) the clamping surface shall be at least 5 mm in width and recessed to the centre at least to D/8(
0/-2) and not less than 40 mm (see Figure 3). Precautions shall be taken to ensure that the saw blade does not come loose during start up, running, run-down or braking, e.g. by using a positive connection between the spindle and saw blade, or by using a positive connection between the front saw flange and the saw spindle. Verification: By checking the relevant drawings, measurement, inspection of the machine and relevant functional testing of the machine.
Figure 3 — Saw flange detail (clamping surface) 5.3.3.5 Stroke control The saw unit shall be fitted with a handle for moving it along the arm. This handle shall be so designed and positioned that a normal hand clench grip is possible e.g. smooth hand bar in accordance with EN 894-3:2000. Also see 5.4.5. In its rest position, the saw unit shall be provided with an automatic retaining latch. The retaining latch release control shall be positioned on or adjacent to the handle for moving the saw unit along the arm to allow the actuation of the release control and initiation of the pulling movement with one hand. The saw unit shall automatically return to its rest position within 3 s e.g. actuated by a spring or weight. The maximum speed of the return movement shall not exceed 1, 0 m s-1. The machine shall be fitted with fixing points for an optional device to prevent the saw unit from accelerating the forward movement during the cutting stroke caused by binding in of the saw blade into the workpiece (see 6.3 b)). This may be realised by fitting a hydraulic or mechanical limiting device e.g. an inertia reel restraint SIST EN 1870-17:2007

Verification: By checking relevant drawings, measurement, inspection of the machine and relevant functional testing of the machine. 5.3.3.6 Saw unit pivoting limits The facility to pivot the arm supporting the saw unit about a vertical axis, to vary the direction of stroke, shall be limited to 48° either side of a line perpendicular to the workpiece guide (fence). On machines where the facility to pivot the arm supporting the saw unit about a vertical axis exceeds 48° on one or both sides it shall not exceed 70° and adjustable workpiece clamping device(s) shall be provided in the corresponding zone(s). It shall not be possible for the saw unit to rotate about a vertical axis with respect to the arm supporting the saw unit, except for the purpose of setting the saw blade in the plane of the stroke. The method used to limit saw unit adjustment rotation shall be an integral part of the saw unit support.
Where a pin or nut and bolt are used to limit adjustment they shall not be removable e.g. welded or shrink-fit. Verification: By checking relevant drawings, measurement, inspection of the machine and relevant functional testing of the machine.
5.3.3.7 Saw unit canting limits The facility to cant the saw unit about a horizontal
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