EN 1870-4:2001+A1:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Sicherheit von Holzbearbeitungsmaschinen - Kreissägemaschinen - Teil 4: Mehrblattkreissägemaschinen für Längsschnitt mit Handbeschickung und/oder HandentnahmeSécurité des machines pour le travail du bois - Machines à scies circulaires - Partie 4: Scies circulaires à déligner multilames à chargement et/ou déchargement manuelSafety of woodworking machines - Circular sawing machines - Part 4: Multiblade rip sawing machines with manual loading and/or unloading79.120.10Lesnoobdelovalni strojiWoodworking machines25.080.60Strojne žageSawing machinesICS:Ta slovenski standard je istoveten z:EN 1870-4:2001+A1:2009SIST EN 1870-4:2002+A1:2009en01-oktober-2009SIST EN 1870-4:2002+A1:2009SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1870-4:2001+A1
August 2009 ICS 79.120.10 Supersedes EN 1870-4:2001English Version
Safety of woodworking machines - Circular sawing machines - Part 4: Multiblade rip sawing machines with manual loading and/or unloading
Sécurité des machines pour le travail du bois - Machines à scies circulaires - Partie 4: Scies circulaires à déligner multilames à chargement et/ou déchargement manuel
Sicherheit von Holzbearbeitungsmaschinen - Kreissägemaschinen - Teil 4: Mehrblattkreissägemaschinen für Längsschnitt mit Handbeschickung und/oder Handentnahme This European Standard was approved by CEN on 19 January 2001 and includes Amendment 1 approved by CEN on 23 July 2009.
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 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 translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official 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.
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B-1000 Brussels © 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1870-4:2001+A1:2009: ESIST EN 1870-4:2002+A1:2009

Dimensional tolerances of saw spindles . 39Annex ZA (informative)
!Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC"""" . 41Annex ZB (informative)
!!!!Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC"""" . 42 SIST EN 1870-4:2002+A1:2009

!EN 847-1:2005, Tools for woodworking — Safety requirements — Part 1: Milling tools, circular saw blades" !EN 894-1:1997, Safety of machinery — Ergonomics requirements for the design of displays and control actuators — Part 1: General principles for human interactions with displays and control actuators SIST EN 1870-4:2002+A1:2009

Part 1: Emission EN 50370-2:2003, Electromagnetic compatibility (EMC) — Product family standard for machine-tools —
Part 2: Immunity" !EN 60204-1:2006", Safety of machinery — Electrical equipment of machines — Part 1: General requirements !(IEC 60204-1:2005, modified)" !EN 60439-1:1999, Low-voltage switchgear and controlgear assemblies — Part 1: Type-tested and partially type-tested assemblies (IEC 60439-1:1999)" EN 60529:1991, Degrees of protection provided by enclosures (IP Code) !(IEC 60529:1989)" !EN 60825-1:2007, Safety of laser products — Part 1: Equipment classification and requirements (IEC 60825-1:2007) " !EN 60947-4-1:2001", Low voltage switchgear and control gear — Part 4: Contactors and motor starters – Section 1: Electromechanical contactors and motor starters !(IEC 60947-4-1:2000)" !EN 60947-5-1:2004", Low voltage switchgear and control gear — Part 5-1: Control circuit devices and switching elements — Electromechanical control circuit devices !(IEC 60947-5-1:2003)" !EN 61310-1:2008, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual, acoustic and tactile signals (IEC 61310-1:2007)" SIST EN 1870-4:2002+A1:2009

Key 1 Sawblade not moved 2 Sawblade 3 Feed 4 Workpiece 5 Feed 6 Workpiece not moved Figure 1 a) — Cutting against the feed:Direction of the workpiece feed in relation to the sawblade rotation SIST EN 1870-4:2002+A1:2009

Key 1 Sawblade not moved 2 Sawblade 3 Feed 4 Workpiece 5 Feed 6 Workpiece not moved Figure 2 b) — Climb cutting:Direction of the workpiece feed in relation to the sawblade rotation 3.2 machine actuator a power mechanism used to effect motion of the machine 3.3 integrated feed a feed mechanism for the workpiece (or tool) which is integrated with the machine and where the workpieces (or machine element with incorporated tool) are held and controlled mechanically during the machining operation NOTE In the case of machines covered by this European Standard, integrated feed is in the form of rollers, chain conveyor or chain bed. The words in brackets are not applicable to the machine covered by this European Standard. 3.4 stationary machine a 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 3.5 loading the machine the manual or automatic placing of the workpiece onto a carriage, magazine, lift, hopper, moveable bed, conveyor or the presentation of the workpiece to an integrated feed device 3.6 cutting against the feed when the relative direction of the tool to the workpiece is as illustrated in Figure 1 a) 3.7 climb cutting when the relative direction of the tool to the workpiece is as illustrated in Figure 1 b) SIST EN 1870-4:2002+A1:2009

No Hazards, hazardous situations and hazardous events EN ISO 12100 Relevant sub-clause of this document
Part 1: 2003 Part 2: 2003
1 Mechanical hazards related to: - machine parts or workpieces:
a) shape; 4.2 4.2.1, 4.2.2, 5 5.2.3, 5.2.5, 5.2.7
b) relative location; 5.1.2, 5.2.5, 5.2.6
c) mass and stability (potential energy of elements which may move under the effect of gravity) 5.2.6
d) mass and velocity (kinetic energy of elements in controlled or uncontrolled motion); 5.2.5, 5.2.6
e) mechanical strength. 5.2.2, 5.2.5
- accumulation of energy inside the machinery:
g) liquids and gases under pressure; 4.2 4.10, 5.5.4 5.3.7, 5.3.8 1.1 Crushing hazard 4.2.1
5.2.5, 5.2.6, 5.2.7 1.2 Shearing hazard 5.2.5, 5.2.6, 5.2.7 1.3 Cutting or severing hazard 5.2.2, 5.2.3, 5.2.4, 5.2.5, 5.2.6, 5.2.7 1.4 Entanglement hazard 5.2.7 1.5 Drawing-in or trapping hazard 5.2.7 1.6 Impact hazard 5.2.2, 5.2.5 1.7 Stabbing and puncture hazard 5.2.2, 5.2.5 1.9 High pressure fluid injection or ejection hazard 5.3.7, 5.3.8 2 Electrical hazards due to: 2.1 Contact of persons with live parts (direct contact) 4.3 4.9, 5.5.4 5.3.4 2.2 Contact of persons with parts which have become live under faulty conditions (indirect contact) 4.3 4.9 5.3.4 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 5.3.2 4.2 Interference with speech communication, acoustic signals.
5.3.2 SIST EN 1870-4:2002+A1:2009

5.3.13 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
5.3.3 7.2 Fire hazard 4.8 4.4
5.3.1 8 Hazards generated by neglecting ergonomic principles in machinery design related to: 8.1 Unhealthy postures or excessive effort 4.9 4.7, 4.8.2, 4.11.12, 5.5.5, 5.5.6 5.1.2 8.2 Hand-arm or foot-leg anatomy 4.9 4.8.3
5.1.2 8.4 Local lighting
4.8.6 6.3 8.6 Human error, human behaviour
4.8, 4.11.8, 4.11.10, 5.5.2, 6 6.3 8.7 Design, location or identification of manual controls
4.8.7, 4.11.8 5.1.2 8.8 Design or location of visual display units
4.8.8, 6.2 5.1.2 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
5.1.1 10.2 Restoration of energy supply after an interruption
4.11.4
5.1.6, 5.1.7, 5.3.7 10.3 External influences on electrical equipment
4.11.11 5.1.1, 5.3.4 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
5.1.1, 5.3.5, 6.3 11 Impossibility of stopping the machine in the best possible conditions
4.11.1, 4.11.3, 5.5.2
5.1.2, 5.1.4 12 Variations in the rotational speed of tools
4.2.2, 4.3 5.1.9 13 Failure of the power supply
4.11.1, 4.11.4 5.1.7 14 Failure of the control circuit
4.11, 5.5.4
5.1.1 15 Errors of fitting 4.9
4.7, 6.5
5.3.15, 6.3 16 Break-up during operation 4.2.2 4.3 5.2.2 17 Falling or ejected objects or fluids 4.2.2 4.3, 4.10
5.2.2, 5.2.5, 5.3.7, 5.3.8 18 Loss of stability / overturning of machinery 4.2.2 5.2.6
5.2.1 19 Slip trip and fall hazards in relationship with machinery 4.10 5.5.6 5.2.7 " SIST EN 1870-4:2002+A1:2009

Key 1 Front edge of infeed table 2 Fence line 3 Feed Figure 2 — Position of controls Verification: By checking the relevant drawings, measurement and inspection of the machine. 5.1.3 Starting See 9.2.5.2 of !EN 60204-1:2006" and in addition: For the purposes of this European Standard, "all of the safeguards in place and functional“ is achieved by the interlocking arrangements described in 5.2.7.1, 5.2.7.2, and 5.2.7.3. "Operation“ means rotation and/or SIST EN 1870-4:2002+A1:2009

If the machine is fitted with a mechanical brake, this stop control shall be of category 0 in accordance with 9.2.2 of !EN 60204-1:2006". If the machine is fitted with an electrical brake, this stop control shall be of category 1 in accordance with 9.2.2 of !EN 60204-1:2006". Where a category 1 emergency stop control is fitted, the stopping sequence shall be in accordance with 5.1.4 above. SIST EN 1870-4:2002+A1:2009

The ejection of splinters below the table/workpiece support at the infeed end of the machine shall be prevented by a fixed guard. Verification:By checking the relevant drawings and inspection on the machine. 5.2.5.1.1 Machines designed for cutting against the feed On machines designed for cutting against the feed, anti-kickback fingers and anti-splinter fingers shall be fitted before the sawblade(s) in the feed direction. Verification:By checking the relevant drawings and inspection on the machine. 5.2.5.1.1.1 Anti-kickback fingers The anti-kickback fingers and their mounting shall be in accordance with the following requirements: a) they shall extend across the full cutting width capacity of the machine. In addition, there shall be at least one additional anti-kickback finger at each end of this row; b) they shall be effective over the full cutting height capacity of the machine "Effective operation“ shall be between 85o and 55o, this angle being measured between a line from the tip to the axis of pivot of the fingers and the horizontal (see Figure 3). To achieve this it may be necessary to have more than one row or a particular profile of the tips or both;
Key 1 Length of finger 2 Mechanical end stop Figure 3 — Anti-kickback fingers c) a mechanical stop shall be provided to prevent the anti-kickback fingers moving beyond the 85o point (see Figure 3); d) the mounting shaft for the anti-kickback fingers shall be in accordance with Figure 4, and the shaft shall be manufactured from steel having an ultimate tensile strength of at least 570 N mm -2;
Key 1 minimum shaft diameter Figure 4 — Dimensions of mounting shafts for anti-kickback fingers and anti-splinter fingers e) the fingers shall have lower tips with a maximum radius of 0,5 mm and a hardness of 45 ± 5 HRC; f) where the fingers are mounted on a fixed shaft or shafts, one row shall extend down to within 1 mm of the table or workpiece feeding system; g) where the fingers are mounted on a shaft which rises and falls with the support for the upper feed rollers and vertical adjustment is provided, when moving in the direction of increasing the workpiece thickness, this movement shall only be possible when the sawblades have stopped rotating and the feed has been stopped, or, a means of detecting that a workpiece which has entered the infeed of the machine has passed the sawblades shall be provided, e.g. monitoring of powered roller position associated with time delay devices (see also 5.2.6). The lower tips shall, in the rest position (i.e. at 85û from the horizontal), be at least 5 mm below the lowest point of the upper feed roller; h) the thickness of each spacer between the anti-kickback fingers shall be a minimum of 0,5 mm and a maximum of 1 mm; i) where the length (see Figure 3) of the anti-kickback fingers is ≤ 200 mm the minimum thickness of each finger shall be 6 mm and the maximum thickness 10 mm. Where the length of the anti-kickback fingers is > 200 mm the minimum thickness of each finger shall be 8 mm and the maximum thickness 15 mm. The thickness of the fingers may be reduced in the areas of the shaft support or lifting element; j) the fingers shall return automatically to their rest position when not in contact with the workpiece; k) the sides of each finger shall be flat and parallel to each other within ± 0,5 mm; l) where a row of anti-kickback fingers does not extend down to table level, the fingers in the row shall be of the same length ± 1 mm; SIST EN 1870-4:2002+A1:2009

For the hardness and ultimate tensile strength a confirmation from the manufacturer of the material can be useful. " 5.2.5.1.1.2 Anti-splinter fingers mounted above the table Two off-set (i.e. the rows shall not coincide) rows of anti-splinter fingers (see Figure 5) shall be fitted above the table across the full infeed opening of the machine and both rows shall extend down to the table or to within 1 mm of the workpiece feeding system. The anti-splinter fingers and their mounting shall be in accordance with either type 1 or type 2 below.
Key SIST EN 1870-4:2002+A1:2009
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