1、BRITISH STANDARDBS EN 1550:1997 +A1:2008Machine-tools safety Safety requirements for the design and construction of work holding chucksICS 25.060.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39
2、g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 1550:1997+A1:2008This British Standardwas published under the authority of the StandardsBoard and comes into effect on 15 November 1997 BSI 2008ISBN 978 0 580 61248 0National forewordThis British Standard is the UK implementation of EN 1550:1997+
3、A1:2008. It supersedes BS EN 1550:1997 which is withdrawn. The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by !“.The
4、 UK participation in its preparation was entrusted to Technical Committee MTE/1, Machine tools.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsi
5、ble for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrigenda issued since publicationDate Comments31 January 2009 Implementation of CEN amendment A1:2008EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1550:1997+A1 July 20
6、08 ICS 25.060.20 Supersedes EN 1550:1997 English Version Machine-tools safety - Safety requirements for the design and construction of work holding chucks Scurit des machines-outils - Spcifications de scurit pour la conception et la construction des mandrins porte-pices Sicherheit von Werkzeugmaschi
7、nen - Sicherheitsanforderungen fr die Gestaltung und Konstruktion von Spannfuttern fr die WerkstckaufnahmeThis European Standard was approved by CEN on 9 February 1997 and includes Amendment 1 approved by CEN on 29 June 2008. CEN members are bound to comply with the CEN/CENELEC Internal Regulations
8、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 CEN Management Centre or to any CEN member. This Europea
9、n 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 CEN Management Centre has the same status as the official versions. CEN members are the natio
10、nal standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and U
11、nited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1550:19
12、97+A1:2008: EEN 1550:1997+A1:2008 (E) 2 Contents Page Foreword3 Introduction .4 1 Scope 4 2 Normative references 4 3 Definitions 5 4 List of hazards6 5 Safety requirements and/or measures 7 6 Information for use 8 Annex ZA (informative) !Relationship between this European Standard and the Essential
13、Requirements of EU Directive 98/37/EC“.11 Annex ZB (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC“.12 BS EN 1550:1997+A1:2008EN 1550:1997+A1:2008 (E) 3 Foreword This document (EN 1550:1997+A1:2008) has been prepared by Technical C
14、ommittee CEN/TC 143 “Machine tools - 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 January 2009, and conflicting national standards shall be wit
15、hdrawn at the latest by December 2009. This document includes Amendment 1, approved by CEN on 2008-06-29. This document supersedes EN 1550:1997. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! “. This European Standard has been prepared under a mand
16、ate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EC Directive(s). !For relationship with EC Directive(s), see informative Annexes ZA and ZB, which are integral parts of this document.“ Normative and informative annexes to thi
17、s standard are listed in the Content list. The European Standards produced by CEN/TC 143 are particular to machine tools and complement the relevant A and B Standards on the subject of general safety (see introduction of !EN ISO 12100-1“ for a description of A, B and C standards). According to the C
18、EN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
19、 Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. BS EN 1550:1997+A1:2008EN 1550:1997+A1:2008 (E) 4 Introduction This standard has been prepared to be a European standard to provide one means of conforming to the Es
20、sential Health and Safety Requirements of the Machinery Directive and associated EFTA Regulations. The extent to which hazards are covered is indicated in the scope of this standard. 1 Scope This European Standard sets out the requirements and/or measures to remove the hazards and limit the risk on
21、work holding chucks which are defined in 3.1. This European standard covers all the hazards relevant to this component. These hazards are listed in clause 4. The requirements of this standard concern designers, manufacturers, suppliers and importers of work holding chucks. This standard also include
22、s information which the manufacturer shall provide to the user. This standard is primarily directed to components which are manufactured after the date of issue of this standard. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publicati
23、ons. 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. F
24、or undated references the latest edition of the publication referred to applies. !Deleted text“ !Deleted text“ !Deleted text“ EN 982:1996, Safety of machinery, Safety requirements for fluid power systems and their components Hydraulics EN 983:1996, Safety of machinery, Safety requirements for fluid
25、power systems and their components Pneumatics !EN ISO 12100-1:2003, Safety of machinery Basic concepts, general principles for design Part 1: Basic terminology, methodology (ISO 12100-1:2003)“ !EN ISO 12100-2:2003, Safety of machinery Basic concepts, general principles for design Part 2: Technical p
26、rinciples (ISO 12100-2:2003)“ BS EN 1550:1997+A1:2008EN 1550:1997+A1:2008 (E) 5 ISO 1940-1:1986, Mechanical vibration Balance quality requirements of rigid rotors Part 1: Determination of permissible residual unbalance ISO 3089:1991, Self-centring manually-operated chucks for machine tools Acceptanc
27、e test specifications (geometrical tests) ISO 3442:1991, Self-centring chucks for machine tools with two-pieces jaw (tongue and groove type) Sizes for interchangeability and acceptance test specifications ISO 9401:1991, Machine tools Jaw mountings on power chucks prEN 1005-2:1993, Safety of machiner
28、y Part 2: Human physical performance Manual handling of machinery and components parts of machinery 3 Definitions For the purposes of this European Standard, the following definitions apply: 3.1 work holding chuck clamping device with movable jaws to hold a workpiece designated herein after by “chuc
29、k“ NOTE Some chucks may be equipped with grooves or slots 3.2 manually-operated chuck chuck in which workpieces are clamped with the aid of manual energy (e.g. by means of a key) 3.3 power-operated chuck chuck in which workpieces are clamped with the aid of pneumatic, hydraulic or electric energy 3.
30、4 centrifugally compensated chuck chuck in which there is a system which permits compensation of the loss of clamping force due to centrifugal force 3.5 base jaw radial moving part of the chuck which receives the top jaw 3.6 top jaw element mounted on a base jaw for the clamping of workpieces 3.7 cl
31、amping force algebric sum of the individual radial forces applied by the chuck jaws on the workpiece 3.8 static clamping force clamping force of the chuck before the chuck has been rotated 3.9 maximum static clamping force maximum clamping force obtained when the maximum permissible input force (or
32、input torque) is applied to a particular design BS EN 1550:1997+A1:2008EN 1550:1997+A1:2008 (E) 6 3.10 dynamic clamping force actual clamping force when the chuck is rotating 3.11 clamping cyclinder cylinder which actuates the chuck with the aid of pneumatic or hydraulic energy 3.12 centrifugal forc
33、e Force generated by rotation that tends to move all parts away radially from the axis of rotation of the chuck. NOTE The centrifugal force (Fc) is expressed in Newtons (N) 22230=nmrrvmrmFc where: m is the mass in kilograms of the moving parts (usually jaws); r is the distance in metres of the centr
34、e of gravity of the moving parts (usually jaws) from the axis of rotation; is the angular velocity in radians per seconds of the centre of gravity of the moving parts (usually jaws); v is the peripheral velocity in metres per second of the centre of gravity of the moving parts (usually jaws); n is t
35、he rotational speed in min-1. 3.13 input force force acting on the chuck applied from an external energy source which actuates the chuck mechanism 3.14 input torque torque acting on the chuck applied from an external energy source which actuates the chuck mechanism 3.15 rotational balance equilibriu
36、m of all masses around the axis of rotation (any differences between the axis of rotation and the centre of gravity will cause imbalance) 3.16 maximum rotational speed (nmax) maximum rotational speed in min-1specified by the manufacturer for a chuck with standard jaws in compliance with the manufact
37、urers instructions (see 6.2) 3.17 working rotational speed (nw) rotational speed in min-1under machining conditions (nw nmax) 4 List of hazards Significant hazards are: Crushing; BS EN 1550:1997+A1:2008EN 1550:1997+A1:2008 (E) 7 Entanglement; Drawing-in or trapping; Impact; Ejection of any exchangea
38、ble or moveable part. 5 Safety requirements and/or measures 5.1 General Appropriate means listed below shall be used during the design and construction of chucks in order to protect any person from being exposed to hazards: a) The chuck and its proper actuating equipment (e.g. cylinder) shall be com
39、patible (see 6.1.9); b) The balance quality factor G shall be provided by the manufacturers accompanying documents (see ISO 1940-1:1986); c) Base jaws of chucks shall be positively prevented (e.g. by locking pins) from being flung out by centrifugal force (see 3.23.6 of !EN ISO 12100-1:2003“); d) Ch
40、ucks with mass greater than 20 kg shall be equipped with means (e.g. threaded holes) for their handling (see 6.2). Verification: by checking the relevant drawings, inspection and type test certificate. 5.2 Special requirements For compensated chucks, nmaxshall be stated by the manufacturer. For non
41、compensated chucks, nmaxshall not exceed the speed corresponding to a calculated loss of 67% of the total measured static clamping force with the manufacturers standard jaws, e.g. hard top jaw of stated mass mounted on the base jaws positioned at the stated radius of gyration. Verification: by check
42、ing the relevant technical file. 5.2.1 Power operated chuck Chuck or chucking equipment (cylinders) shall be equipped with devices to ensure that the clamping force is effectively applied (e.g. travel sensors before stroke end). In the event of energy supply failure to the actuators/cylinders device
43、s (e.g. check valves) shall be provided to ensure that the pressure is maintained for a period stated by the manufacturer (see EN 982:1996 and/or EN 983:1996). Verification: By checking the relevant drawings and/or inspection. 5.2.2 Chuck wrench and similar equipment Chuck wrench or similar equipmen
44、ts for manual jaw locking or manually tightening all types of chuck shall be designed so that they do not remain located in the rotating chucks. Wrench, similar equipment, or their locating points within chucks shall either be spring loaded to be self removing when released or shall prevent (by inte
45、rlocking) the rotation of the spindle when inserted. BS EN 1550:1997+A1:2008EN 1550:1997+A1:2008 (E) 8 Verification: By checking the relevant drawings and/or circuit diagrams and test report on the chuck or wrench. 5.2.3 Chucks with grooves or slots Chucks fitted with grooves or slots open to the ou
46、ter periphery shall be equipped with safety devices (e.g. pins) to prevent stops, counter balances or similar devices from being flung out of slots by centrifugal force. Verification: By checking the relevant drawings and/or inspection. 6 Information for use (see clause 5 in !EN ISO 12100-1:2003“).
47、6.1 General The following information shall be provided in the instruction handbook (see 5.5 in !EN ISO 12100-2:2003“). 6.1.1 Safety instructions for the proper use of the chuck including handling (see prEN 1005-2:1993) function, maximum rotational speed nmax, dimensions, necessary adjustments and f
48、ixing elements, permissible clamping ranges and pressure/forces of power drives. 6.1.2 Method for determination of clamping forces to allow the user to assess the suitability of the chuck for the machining operation. 6.1.3 Information on clamping force variation when the chuck is running with a stan
49、dard jaw (e.g. hard top jaw) to allow the user to determine the dynamic clamping forces. 6.1.4 Maximum permissible mass of the jaw/top jaw at its maximum radius and at maximum rotational speed. 6.1.5 Maximum distance between the centre of gravity of the clamping jaw and the end face of the chuck. 6.1.6 Methods of determination for special top jaw clamping forces. 6.1.7 Instructions for maintenance including lubrication and intervals between checks of static clamping forces. 6.1.8 Information for component interchangeab
