1、December 2013 Translation by DIN-Sprachendienst.English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).I
2、CS 79.120.10!%*zM“2078742www.din.deDDIN EN 847-3Tools for woodworking Safety requirements Part 3: Clamping devices;English version EN 847-3:2013,English translation of DIN EN 847-3:2013-12Maschinen-Werkzeuge fr Holzbearbeitung Sicherheitstechnische Anforderungen Teil 3: Spannzeuge;Englische Fassung
3、EN 847-3:2013,Englische bersetzung von DIN EN 847-3:2013-12Outils pour le travail du bois Prescriptions de scurit Partie 3: Outils de serrage;Version anglaise EN 847-3:2013,Traduction anglaise de DIN EN 847-3:2013-12SupersedesDIN EN 847-3:2004-11www.beuth.deIn case of doubt, the German-language orig
4、inal shall be considered authoritative.Document comprises 17 pages 12.13 DIN EN 847-3:2013-12 2 A comma is used as the decimal marker. Start of application The start of application of this standard is 2013-12-01. National foreword This standard includes safety requirements. This document (EN 847-3:2
5、013) has been prepared by Technical Committee CEN/TC 142 “Woodworking machines Safety” (Secretariat: UNI, Italy), Working Group WG 8 “Tooling” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Werkzeuge und Spann-zeuge (Tools and Clamping De
6、vices Standards Committee), Working Committee NA 121-01-18 AA Sicherheit von Holzbearbeitungs-Werkzeugen. DIN EN 847 consists of the following parts, under the general title Tools for woodworking Safety require-ments: Part 1: Milling tools, circular saw blades Part 2: Requirements for the shank of s
7、hank mounted milling tools Part 3: Clamping devices The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 1940-1 DIN ISO 1940-1 ISO 10897 DIN ISO 10897 ISO 15488 DIN ISO 15488 Amendments This standard differs from DIN EN 847-3:2004-11 as foll
8、ows: a) equations for the calculation of the body width of the test piece have been included; b) the definition of one piece (solid) clamping device, e.g. shrink chuck has been included; c) the title of Table 2 has been changed to read “Minimum balance quality requirements”; d) the content of the fo
9、rmer Annex A (informative) “Safe working practice” has been included in a new Clause 7 “Information for use”; e) the standard has been editorially revised. Previous editions DIN EN 847-3: 2004-11 DIN EN 847-3:2013-12 3 National Annex NA (informative) Bibliography DIN ISO 1940-1, Mechanical vibration
10、 Balance quality requirements for rotors in a constant (rigid) state Part 1: Specification and verification of balance tolerances DIN ISO 10897, Collets for tool holders with taper ratio 1:10 Collets, holders, nuts DIN ISO 15488, Collets with 8 setting angle for tool shanks Collets, nuts and fitting
11、 dimensions DIN EN 847-3:2013-12 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 847-3 October 2013 ICS 79.120.10 Supersedes EN 847-3:2004English Version Tools for woodworking - Safety requirements - Part 3: Clamping devices Outils pour le travail du bois - Pr
12、escriptions de scurit - Partie 3: Outils de serrage Maschinen-Werkzeuge fr Holzbearbeitung - Sicherheitstechnische Anforderungen - Teil 3: SpannzeugeThis European Standard was approved by CEN on 10 August 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate
13、 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-CENELEC Management Centre or to any CEN member. This European Stand
14、ard 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-CENELEC Management Centre has the same status as the official versions. CEN members are the nati
15、onal standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slo
16、vakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any mea
17、ns reserved worldwide for CEN national Members. Ref. No. EN 847-3:2013: EEN 847-3:2013 (E) 2 Contents Page Foreword 3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .5 4 List of significant hazards 6 5 Design requirements .7 5.1 General 7 5.2 Hydrostatic clamping devices
18、with open system .7 5.3 Shape 7 5.4 Balance .7 5.5 Testing 8 5.5.1 Test sample and dimensions 8 5.5.2 Formulae and calculation 10 5.5.3 Test procedure 10 5.6 Requirements on tolerances of clamping devices 11 6 Marking of clamping devices . 11 6.1 General . 11 6.2 Marking of clamping devices for bore
19、 mounted tools 11 6.3 Marking of clamping devices for shank mounted tools . 11 6.4 Marking of one piece clamping devices for shank mounted tools 12 7 Information for use . 12 7.1 General . 12 7.2 Safe working practice . 12 Bibliography . 13 DIN EN 847-3:2013-12 EN 847-3:2013 (E) 3 Foreword This docu
20、ment (EN 847-3:2013) has been prepared by Technical Committee CEN/TC 142 “Woodworking machines - Safety”, the secretariat of which is held by UNI. 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 A
21、pril 2014, and conflicting national standards shall be withdrawn at the latest by April 2014. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent
22、rights. This document supersedes EN 847-3:2004. The following table contains a list of modifications from the previous edition. EN 847-3:2004 EN 847-3:2013 Reason 3 Terms 3 Terms and definitions: new headline some new definitions ed/te 5 Safety requirements 5 Design requirements: new numbering ed 7
23、Information for use 7 Information for use; with 7.2 Safe working practice ed Annex A: Safe work practice No Annex A ed New: Bibliography ed According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard
24、: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
25、 Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 847-3:2013-12 EN 847-3:2013 (E) 4 Introduction This European Standard specifies general requirements for the safety of clamping devices for machine tools for woodworking. It is addressed to manufacturers and it is useful for end users. DIN
26、EN 847-3:2013-12 EN 847-3:2013 (E) 5 1 Scope This European Standard specifies all hazards arising from the use of clamping devices for the fastening of milling tools and circular saw blades on woodworking machines and specifies the methods for the elimination or reduction of these hazards by the des
27、ign of the clamping device and by the provision of information. This European Standard does not apply to arbors for spindle moulding machines in accordance with EN 848-1 or to clamping flanges for circular sawing blades to be used on circular sawing machines in accordance with the standard series EN
28、 1870 and does not cover hazard related to the connection of the clamping device with the machine. Bore mounted tools which are mounted on an interchangeable arbor should be considered as a shank mounted tool. NOTE For definition of “woodworking machines“, see EN 847-1. 2 Normative references The fo
29、llowing documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 847-1:2013
30、, Tools for woodworking Safety requirements Part 1: Milling tools, circular saw blades ISO 1940-1, Mechanical vibration Balance quality requirements for rotors in a constant (rigid) state Part 1: Specification and verification of balance tolerances ISO 10897, Collets for tool holders with taper rati
31、o 1:10 Collets, holders, nuts ISO 15488, Collets with 8 degree setting angle for tool shanks Collets, nuts and fitting dimensions 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 847-1:2013 and the following apply. 3.1 shank part of the tool by which i
32、t is held SOURCE: ISO 3002-1:1982, 3.2.2 3.2 shank mounted tool tool with a shank 3.3 bore mounted tool tool with a bore for mounting 3.4 tool bore that bore in a tool by which it can be located and fixed by a spindle, arbour or mandrel SOURCE: ISO 3002-1:1982, 3.2.3 DIN EN 847-3:2013-12 EN 847-3:20
33、13 (E) 6 3.5 clamping device element for fixing the tool on the driving spindle of the woodworking machine, for transferring the torque of the driving spindle and for positioning of the tool 3.5.1 friction lock clamping device clamping device where the connection between tool and clamping device as
34、well as the positioning of the tool is achieved by friction lock fixing elements (e.g. by spring tensions, gripping elements, hydrostatic clamping elements) 3.5.1.1 clamping device with mechanical clamping fixture clamping device where gripping of the tool in the clamping device is performed mechani
35、cally, e.g. by spring tension, gripping elements 3.5.1.2 clamping device with hydrostatic clamping fixture clamping device where gripping of the tool in the clamping device is performed hydrostatically, e.g. by hydrostatic clamping elements 3.5.1.2.1 hydrostatic clamping element element which neutra
36、lises tolerances between the woodworking tool and the clamping device by elastic deformation Note 1 to entry: The deformation is generated by hydrostatic pressure. 3.5.1.2.2 open system clamping device clamping device where the clamping medium (incompressible fluid, e.g. oil, grease) can escape when
37、 released and is supplied from the outside when clamped 3.5.1.2.3 close system clamping device clamping device where the clamping medium is permanently and pressure-tightly retained in the system 3.5.1.3 one piece clamping device solid clamping device where the clamping force is generated by the ela
38、sticity of its material, e.g. shrink chuck 3.5.2 form lock clamping device clamping device where the connection between tool and clamping device is achieved by form lock fixing elements, e.g. bayonet type clamping, flatted cylindrical shanks 3.6 maximum rotational speed maximum rotational speed for
39、the operation for which the clamping device is designed 4 List of significant hazards Table 1 shows the list of significant hazards. DIN EN 847-3:2013-12 EN 847-3:2013 (E) 7 Table 1 List of significant hazards Hazard Condition or causes of the hazard related to the clamping device Corresponding clau
40、se of EN 847-3 Ejection of parts Incorrect assembly of the clamping device 5.6 Modification of tool position relative to the clamping device 7.2 Dynamic unbalance of the clamping device while rotating 5.4 Loosening of the tool in/on the clamping device during machining 7.2 Fastening of the clamping
41、device on the driving spindle 7.2 Vibrations Dynamic unbalance of the clamping device 5.4 5 Design requirements 5.1 General Clamping devices shall be designed and made of such materials that they withstand the forces and loads expected during operation. Verification: By test procedure described in 5
42、.5.3. NOTE For the calculation of the shank strength, see EN 847-2. In the area of the mounted surface, clamping devices shall be compatible to woodworking tools. 5.2 Hydrostatic clamping devices with open system Hydrostatic clamping devices with open system shall be designed to retain the tool in t
43、he clamping device in the event of the loss of pressure, e.g. by an additional mechanical locking. Verification: By checking the relevant drawings and visual inspection of the clamping device. 5.3 Shape The cross-section of clamping devices shall have a circular form perpendicular to the axis of rot
44、ation. The following exceptions of the circular form are permissible: thread holes for fixing, balancing screws and balancing holes; widths across flats; shape and dimensions according to the sizes of the wrenches; balancing flats for systems with flatted tool shanks. Verification: By checking the r
45、elevant drawings, measurement and visual inspection of the clamping device. 5.4 Balance Clamping devices having a mass greater than 0,5 kg shall be balanced. DIN EN 847-3:2013-12 EN 847-3:2013 (E) 8 Clamping devices with keyways inside the bore shall be balanced without keys and clamping devices wit
46、h keyways on the outside diameter shall be balanced with keys. Maximum rotational speed nmaxin min1 Permissible residual unbalance for clamping devices TU in kgmmgThe balance quality requirements shown in Table 2 shall be applied. Table 2 Minimum balance quality requirements Number Type of clamping
47、devices G-value = eperaccording to ISO 1940-1 Formula (expands ISO 1940-1) Explanation of the formula 1 Clamping devices in general 6,3 max5*1106016,0nU =TThe value of 0,601 6 is the product of 260103pere 2 Clamping devices with movable parts of at least 15 % of the total mass 16 max5*1105279,1nU =T
48、The value of 1,527 9 is the product of 260103pere Verification: By measurement of the clamping device. 5.5 Testing 5.5.1 Test sample and dimensions One-piece sleeves and one-piece arbors shall not be tested. Arbors with form lock elements (e.g. keys) shall be counted as a single element. Test rotational speed: np= 1,5 nmax. Test torsional moment: Mp= 1,5 Mmax. The values (Mmax, nmax, t) and required dimensions shall be determined. The test sample for clamping devices for
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