SIST EN 12750:2002

SLOVENSKI STANDARD
01-januar-2002
Safety of woodworking machines - Four-sided moulding machines
Safety of woodworking machines - Four-sided moulding machines
Sicherheit von Holzbearbeitungsmaschinen - Fräsmaschinen für vierseitige Bearbeitung
Sécurité des machines pour le travail du bois - Machines a moulurer sur quatre faces
Ta slovenski standard je istoveten z: EN 12750:2001
ICS:
79.120.10 Lesnoobdelovalni stroji Woodworking machines
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 12750
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2001
ICS 79.120.10
English version
Safety of woodworking machines - Four-sided moulding
machines
Sécurité des machines pour le travail du bois - Machines à Sicherheit von Holzbearbeitungsmaschinen -
moulurer sur quatre faces Fräsmaschinen für vierseitige Bearbeitung
This European Standard was approved by CEN on 4 June 2001.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12750:2001 E
worldwide for CEN national Members.

CONTENTS
page
Foreword . 3
Introduction . 3
1 Scope . 3
2 Normative references . 4
3 Terms and definitions. 6
4 List of hazards. 10
5 Safety requirements and/or measures . 13
5.1 Controls . 13
5.2 Protection against mechanical hazards . 18
5.3 Protection against non-mechanical hazards. 28
6 Information for use. 32
6.1 Warning devices . 32
6.2 Marking . 32
6.3 Instruction handbook. 32
Annex A (informative) Example of a safety related control system. 35
Annex B (normative) Spindle specifications. 36
Annex C (normative) Table lip resistance test . 37
Annex D (informative) Safe working practice. 41
Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other
provisions of EU Directives. 43
Foreword
This European Standard has been prepared by Technical Committee CEN/TC 142 "Woodworking machines
- Safety", the secretariat of which is held by BSI.
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 January 2002, and conflicting national standards shall be withdrawn
at the latest by January 2002.
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 EU Directive(s).
For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this standard.
Organisations contributing to the preparation of this European Standard include European Committee of
Woodworking Machinery Manufacturers Association "EUMABOIS".
The annexes B and C are normative, the annexes A, D and ZA are informative.
The European Standards produced by CEN/TC142 are particular to woodworking machines and complement
the relevant A and B standards on the subject of general safety (see introduction of EN 292-1:1991 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, Czech Republic, Denmark,
Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal,
Spain, Sweden, Switzerland and the United Kingdom.
Introduction
This European Standard is a type “C” standard as defined in EN 292:1991.
The extent to which hazards are covered is indicated in the scope of this European Standard.
The requirements of this European Standard concern designers, manufacturers, suppliers and importers of
four-sided moulding machines.
This European Standard also includes information which the manufacturer shall provide to the user.
Common requirements for tooling are given in EN 847-1:1997.
1Scope
This European Standard specifies the requirements and/or measures to remove the hazards and limit the risks
on four-sided moulding machines with a maximum working width of 350 mm hereafter referred to as
"machines" designed to cut solid wood, chipboard, fibreboard, plywood and also these materials where these
are covered with plastic laminate or edgings.
This European Standard covers the hazards relevant to this machine as listed in clause 4.
For Computer Numerically Controlled machines (CNC) this European Standard does not cover hazards
related to Electro-Magnetic Compatibility (EMC).
This European Standard does not apply to :
a) hazards relating to infeed devices (magazines, hoppers, etc.);
b) machines designed for machining logs which have not previously been machined.
This European Standard is primarily applicable to machines which are manufactured after the date of issue of
this European Standard.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications.
These normative references are cited at the appropriate places in the text, and the publications are listed
hereafter. For dated references subsequent amendments to, or revisions of, any of these publications apply to
this European Standard only when incorporated in it by amendment or revision. For undated references the
latest edition of the publication referred to applies (including amendments).
EN 292-1 : 1991 Safety of machinery - Basic concepts, general principles for design - Part 1:
Basic terminology, methodology
EN 292-2 : 1991 Safety of machinery - Basic concepts, general principles for design - Part 2:
EN 292-2/A1 : 1995 Technical principles and specifications
EN 294 : 1992 Safety of machinery - Safety distances to prevent danger zones being reached
EN 418 : 1992 Safety of machinery – Emergency stop equipment; functional aspects -
Principles for design
EN 847-1 : 1997 Tools for woodworking – Safety requirements - Part 1: Milling tools, circular
saw blades
EN 953 : 1997 Safety of machinery – Guards - General requirements for the design and
construction of fixed and movable guards
EN 954-1 : 1996 Safety of machinery - Safety related parts of control systems - Part 1: General
principles for design
EN 982 : 1996 Safety requirements for fluid power systems and components – Hydraulics
EN 983 : 1996 Safety requirements for fluid power systems and components - Pneumatics
EN 1088 : 1995 Safety of machinery – Interlocking devices associated with guards – Principles
for design and selection
EN 20354 : 1993 Acoustics – Measurement of sound absorption in a reverberation room
(ISO 354:1985)
EN 60204-1 : 1992 Safety of machinery – Electrical equipment of machines - Part 1 : General
requirements (IEC 204-1:1992, modified)
EN 60529 : 1991 Degrees of protection provided by enclosures (IP Code)
(IEC 60529:1989)
EN 60947-4-1 : 1992 Low voltage switchgear and control gear - Part 4: Contactors and motor
starters – Section 1 : Electromechanical contactors and motor starters
(IEC 60947-4-1:1990)
EN 60947-5-1 : 1997 Low voltage switchgear and control gear - Part 5-1: Control circuit devices and
switching elements - Electro-mechanical control circuit devices
(IEC 60947-5-1:1990)
EN ISO 3741 : 1999 Acoustics – Determination of sound power levels of noise sources using sound
pressure – Precision methods for broad-band sources in reverberation rooms
(ISO 3741:1999)
EN ISO 3743-1 : 1995 Acoustics – Determination of sound power levels of noise sources –
Engineering methods for small, movable sources in reverberant fields - Part 1:
Comparison method for hard walled test rooms (ISO 3743-1:1994)
EN ISO 3743-2 : 1996 Acoustics – Determination of sound power levels of noise sources -
Engineering methods for small, movable sources in reverberant fields - Part 2:
Method for special reverberation test rooms (ISO 3743-2:1994)
EN ISO 3744 : 1995 Acoustics – Determination of sound power levels of noise sources using sound
pressure – Engineering method in an essentially free field over a reflecting
plane (ISO 3744:1994)
EN ISO 3746 : 1995 Acoustics – Determination of sound power levels of noise sources using sound
pressure – Survey method employing an enveloping measurement surface over
a reflecting plane (ISO 3746:1995)
EN ISO 4871 : 1996 Acoustics – determination and verification of noise emission values of
machinery and equipment (ISO 4871:1996)
EN ISO 9614-1 : 1995 Acoustics – Determination of sound power levels of noise sources using sound
intensity - Part 1 : Measurement at discrete points (ISO 9614-1:1993)
EN ISO 11202 : 1995 Acoustics - Noise emitted by machinery and equipment – Survey method for
the measurement of emission sound pressure levels at the workstation and at
other specified positions - Survey method in situ (ISO 11202:1995)
EN ISO 11204 : 1995 Acoustics - Noise emitted by machinery and equipment –Determination of
emission sound pressure levels at the workstation and at other specified
positions - Method requiring environmental corrections (ISO 11204:1995)
EN ISO 11688-1 : 1998 Acoustics – Recommended practice for the design of low-noise
machinery and equipment – Part 1 : Planning (ISO/TR 11688-1:1995)
ISO 230-1 : 1998 Test code for machine tools – Part 1: Geometric accuracy of machines
operating under no-load or finishing conditions
ISO 3745 : 1977 Acoustics – Determination of sound power levels of noise sources - Precision
methods for anechoic and semi anechoic rooms
ISO 7960 : 1995 Airborne noise emitted by machine tools - Operating conditions for
woodworking machines
HD 21.1 S3 : 1997 Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V - Part 1: General requirements
HD 22.1 S3 : 1997 Rubber insulated cables of rated voltage up to and including 450/750 V - Part
1: General requirements
3 Terms and definitions
For the purposes of this European Standard the following terms and definitions apply :
3.1
four-sided moulding machine
a machine where the workpiece once loaded manually or by magazine, moves by an integrated feed
mechanism. Machines where the first feed roller is beyond the first tool are, for the purpose of this European
Standard, integrated fed machines. The machine has at least four work units, one on each side, with rotating
planing or moulding tools. The tool spindles have horizontal and/or vertical axes which can be adjusted
manually or under power
The machine can be fitted with additional work units such as universal spindles or glass bead saw units.
3.2
universal spindle
work unit, the position of which can be changed manually or under power so as to allow it to work at
different positions around the workpiece
3.3
glass bead saw unit
work unit fitted with a sawblade to cut out a glass bead from the machined profile of the workpiece (e.g. see
Figure 1)
Key
1 Glass bead sawblade
2 Riving knife
3 Guiding channel for bead ledge
4 Bead ledge
5 Anti-kickback finger
6 Feed roller
7Workpiece
8 Feed direction
Figure 1 - Example of a glass bead saw unit
3.4
hydraulic tool fixing device
device for clamping the tool to the spindle using hydraulic pressure
3.5
integrated feed
feed mechanism for the workpiece or tool which is integrated with the machine and where the workpiece or
machine element with incorporated
...