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1、BRITISH STANDARDTools forwoodworking Safety requirementsPart 1. Milling tools and circular saw bladesThe European Standard EN 847-1 : 1997 has the status of aBritish StandardICS 79.120.20| BS EN847-1 : 1997|NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 847-1 : 1997Natio
2、nal forewordThis British Standard is the English language version of EN 847-1 : 1997.The UK participation in its preparation was entrusted to Technical CommitteeMTE/23, Woodworking machines, which has the responsibility to: aid enquirers to understand the text; present to the responsible European co
3、mmittee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK.A list of organizations represented on this committee can be obtained on request to its secretary.Cross-refe
4、rencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using theFind facility of the BSI Standards Electronic Catalogue.
5、Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 28, an inside back cover and a back cover.Amd. No.DateText affectedThis British Standard, having be
6、en prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 December 1997BSI 1997ISBN 0 580 28357 7Amendments issued since publicationEUROPEAN STANDARDEN 847-1NORME EUROPE ENNEEUROPA ISCHE NORMMay 1997ICS 79.12
7、0.10Descriptors: Woodworking machinery, power-operated tools, milling cutters, blades, circular saws, safety, accident prevention, hazards, specifications, design, definitions, markingEnglish versionTools for woodworking Safety requirements Part 1: Milling tools and circular saw bladesOutils pour le
8、 travail du bois Prescriptions dese curite Partie 1: Outils de fraisage, lames de scies circulairesMaschinen-Werkzeuge fu r Holzbearbeitung Sicherheitstechnische Anforderungen Teil 1: Fra s- und Hobelwerkzeuge, Kreissa gebla tterThis European Standard was approved by CEN on 1997-03-19. CEN members a
9、re 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
10、the Central Secretariat 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 Central Secretariat has the same sta
11、tus 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.CENEuropean Committee for Stand
12、ardization Comite Europe en de Normalisation Europa isches Komitee fu r NormungCentral Secretariat: rue de Stassart 36, B-1050 Brussels1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nationalMembers.Ref. No. EN 847-1 : 1997 EPage 9EN 847-1 : 1997BSI 1997Fo
13、rewordThis European Standard has been prepared byTechnical Committee CEN/TC 142, WoodworkingContentsPagemachines Safety, of which the Secretariat is held byBSI.This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at th
14、e latest by November1997, and conflicting national standards shall be withdrawn at the latest by November 1997.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
15、(s).Organizations contributing to the preparation of this European standard include the Comite Europe en de lOutillage (CEO).This European Standard also includes annex A describing the rig for the testing of kickback behaviour of milling tools for hand feed and annex B giving guidance to the manufac
16、turer on information which shall be supplied to the user, concerning safe working practices to be employed.Detailed drawings for the test rig (see annex A.1) and the reference tool can be acquired from the CEN members (i.e. the national standards institutes).All figures in this standard are examples
17、 or explanations.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, Netherl
18、ands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.Foreword 2Introduction 41 Scope 42 Normative references 43 Definitions 43.1 milling tool for woodworking 43.2 circular saw blade (woodworking) 43.3 one piece tool 43.4 composite tool (tipped tool) 43.5complex tool43.6tool set5
19、3.7body53.8cutting part53.9cutting diameter d1 (cutting radius r1)53.10deflector53.11 cutting blade projection t 53.12clamping length L53.13radial cutting edge projection cr53.14axial cutting edge projection ca53.15 round form tool 53.17adhesive fixing53.18separable fixing53.18.1 friction lock fixin
20、g (see figure 3) 53.16 not round form tool 53.18.2 form lock fixing (see figure 4) 53.19 radial and axial approach flats(see figure 5) 53.20 radial approach angle tr (see figure 5) 53.21 axial approach angle ta (see figure 5) 53.22 kickback velocity ratio VR/VC53.23 woodworking machine 73.24 similar
21、 materials 73.25 tools 73.26 hand feed 73.27 integrated feed 73.28 speed range 73.29 loading the machine 73.30 demountable power feed unit 73.31 ejection 83.32 kickback 84Symbols for some cutting material groups85List of hazards86Design requirements86.1General requirements for milling tools and circ
22、ular saw blades86.1.1Safety requirements and/or measures86.1.2Separable fixing96.1.2.1Form lock fixing and friction lock fixing96.1.2.2Clamping parts96.1.3Overspeed test for complex tools96.1.3.1Test conditions96.1.3.2Test procedure96.1.4Cutting blade thickness and minimum clamping length96.1.4.1One
23、 piece or composite cutting blades96.1.4.2One piece hardmetal (HW, HC) cutting blades106.1.5Dimensions and tolerances106.1.5.1Bore tolerances106.1.5.2Hub diameter and tolerances106.1.6Handling136.2Specific requirements for milling tools136.2.1Tools for hand fed machines136.2.1.1Tool form136.2.1.2Cut
24、ting egde projection and kickback velocity ratio136.2.1.3Gullet width s146.2.1.4Diameter of the body d146.2.1.5Approach angles tr and ta146.2.1.6Milling tool kickback test176.2.2Tool sets and extendible tools for hand fed machines176.2.3Prevention of relative rotation of tool set elements186.2.4Bala
25、nce of milling tools186.2.4.1Quantities and units186.2.4.2Dynamic balancing186.2.4.2.1 One piece tools, composite tools and7Tool identification227.1Marking of milling tools for integratedfeed other than planing and combinedplaning and thicknessing machines227.2Marking of milling tools for machineswi
26、th hand feed other than planing andcombined planing and thicknessingmachines227.3Marking of milling tools for planing andcombined planing and thicknessingmachines227.4Marking of shank mounted tools227.5Marking of circular saw blades227.6Marking of cutting components anddeflectors228Information23Anne
27、xesA(normative) Kickback test on astandard test rig24A.1Test rig24A.2Spindle moulding machine24A.3Mechanism (see figure A.1)24A.4Installment and calibration24A.5Automatic machining cycle for theperformance of kickback24A.6Measurements25A.7Test method25A.7.1Setting25A.7.2Test piece (reference 12 in f
28、igure A.1)25A.7.3Operators action25A.7.4Number of tests25A.8Evaluation of the results25B(normative) Safe working practice27B.1Maximum speed27B.2Circular saw blades27B.3One piece tools27B.4Fastening of tools and tool parts27B.5Repair of tools27bodies for complex tools other than cutterblocks for plan
29、ing and combinedplaning and thicknessing 186.2.4.2.2 Bodies of cutterblocks for planing and combined planing and thicknessingmachines 186.2.4.2.3 Complex tools 186.2.4.2.4 Tool sets 18IntroductionThe extent to which hazards are covered is indicated in the scope of this standard; in addition, machine
30、ry shall comply as appropriate with EN 292 for hazards which are not covered by this standard.The requirements of this standard concern designers, manufacturers, suppliers and importers of tools for woodworking machines.This standard also includes information which the manufacturer should provide to
31、 the user.Besides hazards which may result from inhomogeneity of the material and differing cutting forces during processing, other hazards result from high cutting speeds and manual feeding of the workpieces.1 ScopeThis standard is applicable to all hazards arising from the design and use of tools
32、for woodworking machines, and describes the methods for the elimination or reduction of these hazards by tool design and by the provision of information. Part 1 of the standard deals with milling tools (bore mounted, shank mounted, integrated spindle) and circular saw blades, but does not cover any
33、hazard related to the strength of shank of shankmounted milling tools. The hazards are listed in clause 5. This standard does not apply to boring bits, eccentric single router cutters,cutters with cutting circle less than 16 mm and to tools used in rotary knife lathes and copying lathes wherethe haz
34、ard of ejection and contact with the tool is always prevented by a system of fixed guards and/or movable guards interlocked with guard-locking and/or self-closing guards.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. These
35、 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 onlywhen incorporated in it by amendment or revision. For undated
36、references the latest edition of the publication referred to applies.EN 292-1Safety of machinery Basic concepts, general principles for design Part 1: Basic terminology, methodologyISO 513Application of hard cutting materials for machining by chip removal Designation of the main groups of chip remov
37、al and groups of applicationISO 1940-1Mechanical vibration; balance quality requirements of rigid rotors Part 1: Determination of permissible residual unbalanceISO 3002-1Basic quantities in cutting and grinding Part 1: Geometry of the active part of cutting tools General terms, reference systems, to
38、ol and working angles, chip breakers3 DefinitionsFor the purposes of this standard the following definitions apply.3.1 milling tool for woodworkingA rotating cutting tool, (e.g. milling cutter, planing cutter, thicknessing cutter) normally having its main feed direction perpendicular to its axis of
39、rotation, for working various surfaces on wood and similar materials through chip removal.The cutting edge of the cutting part may be: parallel to the axis of rotation; square to the axis of rotation; or a profile which is a combination of the two. The tool may be: a one piece tool; a composite tool
40、; a complex tool; or in the form of a tool set.3.2 circular saw blade (woodworking)A rotating cutting tool for cross-cutting or ripping wood and similar materials through chip removal. The tool cuts on its periphery and both flankssimultaneously, and may be: a one piece tool; a composite tool; or a
41、complex tool.3.3 one piece toolTools without bonded or detachable parts; the bodyEN 292-2 :1991EN 292-2/A1 :1995Safety of machinery Basicconcepts, general priniciples for design Part 2: Technical priniciples and specificationsand the cutting parts are one piece.3.4 composite tool (tipped tool)Tools
42、where the cutting components (tips) are firmly connected to the body by bonding, e.g. welding, brazing, adhesive fixing, etc.3.5 complex toolISO 286-2ISO system of limits and fits Part 2: Tables of standard tolerance grades and limit deviations for holes and shaftsTools where one or more of the cutting components (inserts, blades) are exchangeably mounted in a body through detachable fixing elements. The cutting components may be one piece or a composite.3.6 tool setA unit consisting of a number of individual tools clamped together on a carrier.3.7 bodyThe pa
