EN 847-2:2001
(Main)Tools for woodworking - Safety requirements - Part 2: Requirements for the shank of shank mounted milling tools
Tools for woodworking - Safety requirements - Part 2: Requirements for the shank of shank mounted milling tools
This European Standard defines the determination of the maximum speed for given eccentricity at clamping devices for the shank strength of milling tools with cylindrical shank. It shall be applied to shank mounted milling tools for woodworking irrespective whether they are mounted perpendicularly or horizontally. This standard shall be used as a complement of EN847-1. The design of this type of shank mounted milling tools shall be in accordance with the relevant clauses of EN847-1.
Maschinen-Werkzeuge für Holzbearbeitung - Sicherheitstechnische Anforderungen - Teil 2: Anforderungen für den Schaft von Fräswerkzeugen
Diese Europäische Norm legt die Bestimmung der Höchstdrehzahl für gegebene Exzentrizitäten an Spannzeugen für die Schaftfestigkeit von Fräswerkzeugen mit Zylinderschaft und deren Kennzeichnung fest. Sie wird für Fräswerkzeuge mit Schaft für die Holzbearbeitung, unabhängig davon ob sie senkrecht oder waagerecht eingespannt sind, angewendet.
Outils pour le travail du bois - Prescriptions de sécurité - Partie 2 : Prescriptions pour les queues des fraises à queue
1 Domaine d'application
La présente Norme européenne spécifie la détermination de la vitesse maximale, pour une excentricité donnée au niveau des dispositifs de serrage, pour la résistance de la queue des fraises à queue cylindrique. Elle fixe également le marquage de l'outil. Elle s'applique aux fraises à queue pour le travail du bois qu'elles soient montées horizontalement ou verticalement.
La présente norme complète l'EN 847-1:1997.
Tools for woodworking - Safety requirements - Part 2: Requirements for the shank of shank mounted milling tools
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2002
Tools for woodworking - Safety requirements - Part 2: Requirements for the shank
of shank mounted milling tools
Tools for woodworking - Safety requirements - Part 2: Requirements for the shank of
shank mounted milling tools
Maschinen-Werkzeuge für Holzbearbeitung - Sicherheitstechnische Anforderungen - Teil
2: Anforderungen für den Schaft von Fräswerkzeugen
Outils pour le travail du bois - Prescriptions de sécurité - Partie 2 : Prescriptions pour les
queues des fraises a queue
Ta slovenski standard je istoveten z: EN 847-2:2001
ICS:
25.100.20 Orodja za frezanje Milling tools
79.120.20 Lesnoobdelovalno orodje Woodworking tools
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 847-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2001
ICS 79.120.10
English version
Tools for woodworking - Safety requirements - Part 2:
Requirements for the shank of shank mounted milling tools
Outils pour le travail du bois - Prescriptions de sécurité - Maschinen-Werkzeuge für Holzbearbeitung -
Partie 2 : Prescriptions pour les queues des fraises à Sicherheitstechnische Anforderungen - Teil 2:
queue Anforderungen für den Schaft von Fräswerkzeugen
This European Standard was approved by CEN on 18 January 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 847-2:2001 E
worldwide for CEN national Members.
Page 2
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 September 2001, and conflicting national
standards shall be withdrawn at the latest by September 2001.
This European Standard has been prepared under a mandate given to CEN by the European
Commission and the European Free Trade Association. This European Standard is considered to be
a supporting standard to those application and product standards which in themselves support an
essential safety requirement of a New Approach Directive and which make reference to this
European standard.
Annex A is normative and Annex B is informative.
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
The content of this standard is aimed at eliminating hazards which can lead to overloading of the
shank of shank mounted milling tools for woodworking by excessive rotational speeds.
1 Scope
This European Standard specifies the determination of the maximum speed for given eccentricity at
clamping devices for the shank strength of milling tools with cylindrical shank and marking of the tool.
It applies to shank mounted milling tools for woodworking irrespective of whether they are mounted
perpendicularly or horizontally.
This standard complements EN 847-1 : 1997.
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 847-1 : 1997 Tools for woodworking - Safety requirements - Part 1 : Milling tools and circular
saw blades
EN 1050 : 1996 Safety of machinery - Principles for risk assessment
ISO 1940-1 : 1986 Mechanical vibration - Balance quality requirements of rigid rotors –
Part 1 : Determination of permissible residual unbalance.
Page 3
3 Quantities and units
a axis of rotation
Figure 1 - Illustration of quantities and units
d is the tool diameter mm
d
is the shank diameter mm
-2
E is the modulus of elasticity N mm
e mm
30 G
per
is the permissible gravity centre displacement : =
e
per
n
shank
1)
e
is the eccentricity at clamping device mm
sp
f is the form factor :
(./.)
f = 0,04 + 0,17 ln (m )
cut
This is an empiric formula of which the result is only valid between 0,6 and 0,9. If
the result is less than 0,6 use 0,6, and if the result is greater than 0,9 use 0,9.
The form factor takes into account the deviation of the actual form (e. g. gullet;
flattening) from the solid body form of the tool without shank.
m
NOTE In ( ) is the natural logar
...
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