Milling cutters for high speed machining - Safety requirements (ISO 15641:2001)

This standard deals with the principle hazards arising from use of milling cutters, e.g. milling cutters according to ISO 3855, used for high speed machining (chip removal machining at increased peripheral speeds) on metal working machine tools and prescribes safety requirements.
It specifies design methods, centrifugal force test procedures, operational limits and the provision of information that will lead to minimisation or elimination of these hazards.
The standard is applicable to milling cutters which are intended for operation at speeds in accordance with figures 1 and 2.
These figures respectively define the rotational speed limits and peripheral speed limits for specific cutter diameters.
NOTE  A detailed explanation is provided in annex B.

Fräswerkzeuge für die Hochgeschwindigkeitsbearbeitung - Sicherheitstechnische Anforderungen (ISO 15641:2001)

Diese Norm behandelt die grundsätzlichen Gefährdungen, die beim Einsatz von Fräswerkzeugen (z.B. Fräswerkzeuge entsprechend ISO 3855) für die Hochgeschwindigkeitsbearbeitung (spanende Be-arbeitung mit erhöhten Umfangsge-schwindigkeiten) auf Metall-bearbei-tungs-maschinen auftreten und legt die Sicherheitsanforderungen fest.
Sie gibt Hinweise zu Konstruktionsmethoden, Fliehkraft-Typ-prüfungsver-fahren, Bearbeitungsgrenzen und zur Bereitstellung von Informationen, die zur Mini-mierung oder Beseiti-gung dieser Gefährdungen führen.
Diese Norm ist anwendbar für Fräswerkzeuge, die für den Gebrauch bei Geschwindigkeiten/Betriebsdrehzahlen ent-sprechend den Bildern 1 und 2 vorgesehen sind.
Diese Bilder definieren die Drehzahl- und Umfangsgeschwindigkeitsgrenzen für bestimmte Fräserdurchmesser.
ANMERKUNG  Eine detaillierte Erläuterung wird in Anhang B gegeben.

Fraises pour usinage a grande vitesse - Prescriptions de sécurité (ISO 15641:2001)

La présente norme traite des phénomenes dangereux principaux se produisant lors de l'utilisation des fraises (par exemple fraises selon l'ISO 3855) pour usinage a grande vitesse (enlevement de copeaux a des vitesses périphériques élevées) sur des machines pour le travail du métal et donne les prescriptions de sécurité.
Elle spécifie les méthodes de conception, les procédures d'essai de force centrifuge, les limites fonctionnelles et les informations a fournir qui conduiront a la réduction ou a l'élimination de ces phénomenes dangereux.
La norme s'applique aux fraises qui sont prévues pour fonctionner aux vitesses spécifiées aux figures 1 et 2.
Ces figures définissent respectivement les limites de la vitesse de rotation et les limites de la vitesse périphérique pour des diametres de fraise spécifiques.
NOTE   Une explication détaillée est fournie en annexe B.

Milling cutters for high speed machining - Safety requirements (ISO 15641:2001)

General Information

Status
Published
Publication Date
31-Dec-2001
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Jan-2002
Due Date
01-Jan-2002
Completion Date
01-Jan-2002

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Milling cutters for high speed machining - Safety requirements (ISO 15641:2001)Fräswerkzeuge für die Hochgeschwindigkeitsbearbeitung - Sicherheitstechnische Anforderungen (ISO 15641:2001)Fraises pour usinage a grande vitesse - Prescriptions de sécurité (ISO 15641:2001)Milling cutters for high speed machining - Safety requirements (ISO 15641:2001)25.100.20Orodja za frezanjeMilling toolsICS:Ta slovenski standard je istoveten z:EN ISO 15641:2001SIST EN ISO 15641:2002en01-januar-2002SIST EN ISO 15641:2002SLOVENSKI

STANDARD
SIST EN ISO 15641:2002

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN ISO 15641September 2001ICS 25.100.20English versionMilling cutters for high speed machining - Safety requirements(ISO 15641:2001)Fraises pour usinage à grande vitesse - Prescriptions desécurité (ISO 15641:2001)Fräswerkzeuge für die Hochgeschwindigkeitsbearbeitung -Sicherheitstechnische Anforderungen (ISO 15641:2001)This European Standard was approved by CEN on 7 March 2001.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 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 Management Centre has the same status as the officialversions.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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36

B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 15641:2001 ESIST EN ISO 15641:2002

EN ISO 15641:2001 (E)2ContentsForeword..............................................................................................................................................................3Introduction..........................................................................................................................................................31

Scope................................................................................................................................................................32

Normative references......................................................................................................................................53

Terms and definitions.....................................................................................................................................63.1 Tool classification terms..................................................................................................................................63.1.1 solid or one-piece cutter...............................................................................................................................63.1.2 composite cutter...........................................................................................................................................63.1.3 complex cutter..............................................................................................................................................63.2

Types of fixing................................................................................................................................................63.2.1 bonding.........................................................................................................................................................63.2.2 separable......................................................................................................................................................63.2.3 friction lock...................................................................................................................................................63.2.4 form lock.......................................................................................................................................................63.3

Terms for the designation of geometric parameters.......................................................................................63.3.1 maximum diameter of tool D.........................................................................................................................63.3.2 critical diameter d for bending......................................................................................................................83.3.3 protruding tool length lp.................................................................................................................................83.4

Terms for the designation of mechanical parameters....................................................................................83.4.1 mass of milling cutter mw..............................................................................................................................83.4.2 component masses mt..................................................................................................................................83.5

Terms for the designation of load parameters................................................................................................83.5.1 maximum rotational speed nmax....................................................................................................................83.5.2 rotational speed for test................................................................................................................................84

Hazards............................................................................................................................................................84.1

Effects which generate hazards.....................................................................................................................84.1.1

Primary hazards..........................................................................................................................................84.1.2

Handling hazards........................................................................................................................................84.2.1

Body failure.................................................................................................................................................94.2.2

Failure of cutting element fixing..................................................................................................................94.2.3

Failure of cutting element............................................................................................................................95

Safety requirements and/or measures..........................................................................................................95.1

Providing safety by design.............................................................................................................................95.2

Importance of balance....................................................................................................................................95.3

Integrity of manufacturing.............................................................................................................................105.4

Centrifugal force type testing........................................................................................................................105.4.1

General requirements................................................................................................................................105.4.2

Testing of solid, one-piece or composite cutters.......................................................................................105.4.3

Testing of complex cutters........................................................................................................................115.4.4

Duration of rotational speed for test..........................................................................................................116

Marking of milling cutters.............................................................................................................................117

Documentation and information for use.....................................................................................................11Annex A

(informative) Indications for design relative to hazards.................................................................12A.1

Indications for design relative to hazards.....................................................................................................12A.2

Total tool mass or tool component masses.................................................................................................12A.3

Unbalance....................................................................................................................................................12A.4

Tool design..................................................................................................................................................12Annex B

(informative)

Explanatory notes to the scope.................................................................................14SIST EN ISO 15641:2002

EN ISO 15641:2001 (E)3ForewordThe text of EN ISO 15641:2001 has been prepared by Technical Committee CEN/TC 143 "Machine tools – Safety",the secretariat of which is held by SNV, in collaboration with Technical Committee ISO/TC 29 "Small tools".This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by March 2002, and conflicting national standards shall be withdrawn at the latest byMarch 2002.The annexes A and B are informative.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries 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.IntroductionThis standard is intended to assist designers, manufacturers and suppliers of milling cutters to satisfy their obligationsin respect of high speed machining applications. It defines requirements for design, confirmation testing andinformation for use that manufacturers and suppliers are to provide.The prime objective is to ensure that milling cutters, employed for high speed machining, will be able to safelywithstand the quadratic increase in centrifugal force resulting from their application at increased rotational speed.It is based upon a collaborative German research project established to investigate the suitability of milling cutters foruse in high speed machining operations.This standard deals only with the tool and is not sufficient alone to ensure the safety. The safety of machinery is dealtwith by other specific safety standards.This standard takes account of cutting conditions only by requiring the manufacturer to provide application information.Informative annex A provides guidance for reduction of hazards by design and informative annex B explains the scopelimits.1

ScopeThis standard deals with the principle hazards arising from use of milling cutters, e.g. milling cutters according toISO 3855, used for high speed machining (chip removal machining at increased peripheral speeds) on metal workingmachine tools and prescribes safety requirements.It specifies design methods, centrifugal force test procedures, operational limits and the provision of information thatwill lead to minimisation or elimination of these hazards.The standard is applicable to milling cutters which are intended for operation at speeds in accordance with figures 1and 2.These figures respectively define the rotational speed limits and peripheral speed limits for specific cutter diameters.NOTE

A detailed explanation is provided in annex B.SIST EN ISO 15641:2002
EN ISO 15641:2001 (E)4a
Maximum diameter of tool D in mmb

Rotational speed n in min-1Figure 1 - Rotational speed n vs maximum diameter of tool DSIST EN ISO 15641:2002

EN ISO 15641:2001 (E)5a
Maximum diameter of tool D in mmb

Velocity at D (speed vD at maximum diameter of tool D) inminmFigure 2 - Velocity at D (speed vD) vs maximum diameter of tool D2

Normative referencesThis European Standard incorporates by dated or undated reference provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listed hereafter. For datedreferences, subsequent amendments to or revisions of any of these publications apply to this European Standard onlywhen incorporated in it by amendment or revision. For undated references the latest edition of the publication referredto applies (including amendments).EN 1070Safety of machinery – TerminologyISO 1940-1:1986Mechanical vibration – Balance quality requirements of rigid rotors – Part 1: Determination of permissibleresidual unbalanceISO 3002-1Basic quantities in cutting and grinding – Part 1: Geometry of the active part of cutting tools – General terms,reference systems, tool and working angles, chip breakersISO 3855Milling cutters – NomenclatureSIST EN ISO 15641:2002

EN ISO 15641:2001 (E)63

Terms and definitionsFor the purposes of this standard the terms and definitions given in EN 1070, ISO 3002-1 and the following apply:3.1 Tool classification terms3.1.1solid or one-piece cuttermilling cutter which has no detachable parts. Its body and cutting part or parts are one piece.3.1.2composite cuttermilling cutter in which the cutting part or parts (e.g. tips) are attached to the body by material bonding (e.g. by brazing).3.1.3complex cuttermilling cutter in which one or more parts (e.g. indexable inserts, cartridges, clamping elements) are attached to thebody by mechanical fastening (e.g. key bolt, screw bolt or clamp bolt fixing which operate by friction lock or form lockprinciples).3.2

Types of fixing3.2.1bondingsecuring of cutter parts with material bonding such as brazing, welding or gluing.3.2.2separablesecuring of cutter parts by detachable fastening(s). Examples are friction lock and form lock fixings, or a combinationof these, which can be mounte

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