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1、BRITISH STANDARD AEROSPACE SERIES BS EN 2066:2002 Extruded section in aluminium alloys General tolerances The European Standard EN 2066:2001 has the status of a British Standard ICS 49.025.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldu
2、n, na, Fri Nov 03 01:33:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2066:2002 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 07 Januar
3、y 2002 BSI 07 January 2002 ISBN 0 580 38027 0 National foreword This British Standard is the official English language version of EN 2066:2001. The UK participation in its preparation was entrusted to Technical Committee ACE/61, Inspection and testing requirements for aerospace metallic materials, w
4、hich has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue un
5、der the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct
6、application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor rel
7、ated international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the docu
8、ment was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:33:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2066 December 2001 ICS 49.025.20 English version Aerospace s
9、eries - Extruded section in aluminium alloys - General tolerances Srie arospatiale - Profils fils en alliages daluminium - Tolrances gnrales Luft- und Raumfahrt - Strangpreprofile aus Aluminiumlegierungen - Allgemeine Toleranzen This European Standard was approved by CEN on 2 May 2001. CEN members a
10、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
11、 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 statu
12、s 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 STANDARD
13、IZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2066:2001 E Licensed Copy: sheffieldun sheffieldun, na
14、, Fri Nov 03 01:33:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2066:2001 (E) 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carried out in accordance with the rules of this Association, this Standard
15、has received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. 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
16、 June 2002, and conflicting national standards shall be withdrawn at the latest by June 2002. 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, F
17、inland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:33:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2066:2001 (E) 3 0Introduction This sta
18、ndard is part of the series of EN metallic material standards for aerospace applications. The general organization of this series is described in EN 4258. 1Scope This standard specifies the general tolerances of: Extruded section in aluminium alloys for aerospace applications. It applies: to section
19、s, standardized or defined by a drawing, the cross section of which, regular or irregular, can be inscribed in a circle of 250 mm (see figure 1), Figure 1 to semi-hollow sections, the dimensional limits of which are indicated in figures 2 and 3. x.y ? 2,5x 2 y.z ? 2,5x 2 Figure 2Figure 3 For section
20、s with higher dimensions or of more complex forms, the tolerances shall be subject to agreement between the manufacturer and purchaser. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:33:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2066:2001 (E) 4 2Normative references This European St
21、andard 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 t
22、o this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 4258Aerospace series Metallic materials General organization of standardization Links between types of EN standards and their use 3Dime
23、nsional tolerances 3.1Transverse cross section To obtain the adequate tolerance, the transverse cross section can be divided into elementary rectangles of dimensions A and B; where A is always the largest dimension of the elementary part and B can be considered as the thickness of the section (see f
24、igure 4). Figure 4 a) Tolerances on A See table 1. Table 1 Dimensions in millimetres ATolerances A ?10? 0,25 10?A?18? 0,30 18?A?30? 0,40 30?A?50? 0,50 50?A?80? 0,60 80?A?120? 0,80 120?A?180? 1,20 180?A?250? 1,40 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:33:08 GMT+00:00 2006, Uncontro
25、lled Copy, (c) BSI EN 2066:2001 (E) 5 These tolerances only apply if B A ? 20. For B A ? 20, tolerances shall be the subject of an agreement between the manufacturer and the user. b) Tolerances on B See table 2. Table 2 Dimensions in millimetres Tolerances on B for: B A ? ? 1010 ? ? A ? ? 1818 ? ? A
26、 ? ? 3030 ? ? A ? ? 50 B? 1,5? 0,15? 0,20? 0,20? 0,20 1,5?B?3? 0,20? 0,20? 0,20? 0,25 3?B?6? 0,25? 0,25? 0,25? 0,25 6?B? 10? 0,25? 0,30? 0,30? 0,30 10?B? 18? 0,30? 0,35? 0,35 18?B? 30? 0,40? 0,40 30?B? 50? 0,50 continued Table 2 (concluded) Dimensions in millimetres Tolerances on B for: B 50 ? ? A ?
27、 ? 8080 ? ? A ? ? 120120 ? ? A ? ? 180180 ? ? A ? ? 250 B? 1,5? 0,25 1,5?B?3? 0,25? 0,30 3?B?6? 0,30? 0,30 6?B? 10? 0,35? 0,35? 0,35 10?B? 18? 0,40? 0,40? 0,40? 0,45 18?B? 30? 0,45? 0,45? 0,50? 0,50 30?B? 50? 0,50? 0,50? 0,55? 0,60 These tolerances only apply if min. max. B B ? 4. If 4 ? min. max. B
28、 B ? 8, the tolerances are increased by: 20 % if B ? 18 mm 10 % if B ? 18 mm 3.2Lengths The tolerance of the sections in fixed length shall be ( 0 20? ) mm. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:33:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2066:2001 (E) 6 3.3Bead seat radi
29、us The tolerances of the bead seat radius shall be ? 10 % of the radius value with a minimum tolerance of ? 0,4 mm. 4Form tolerances 4.1Straightness See figure 5. Key 1Plane surface Figure 5 On total length X1, the difference in straightness Y1 shall satisfy: Y1 ? 0,002 ? X1. Locally, on each portio
30、n X2 = 400 mm: Y2 ? 0,8 mm. 4.2Transverse flatness See figure 6. The maximum difference of the transverse flatness f shall satisfy the following conditions: f ? 0,006 ? A f ? 0,2 mm Figure 6 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:33:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN
31、 2066:2001 (E) 7 4.3Angular dimensions The angular dimensions ? shall be measured at the point of origin of the angle, as indicated in figure 7. The angular tolerance ? between the two faces is given in table 3: Figure 7 Table 3 Thickness B a mm Angular tolerance ? ? 1,5? 1,5 ? 1,5? 1 a In the case
32、of a section with two different thicknesses B, the angular tolerance applicable to the greatest thickness B shall be applied. 4.4Twist The twist V shall be measured as indicated in figure 8. V ? k ? B Figure 8 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:33:08 GMT+00:00 2006, Uncontroll
33、ed Copy, (c) BSI EN 2066:2001 (E) 8 The twist tolerances indicated in table 4 apply to sections with linear masses superior to 0,250 kg/m. Table 4 Dimensions in millimetres Values of coefficient k: Diameter of enveloping circle per meter length k max. on the total length D?250,050,10 25?D?500,040,07
34、 50?D?1000,030,05 100?D?2500,020,04 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:33:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:33:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2066:2002 BSI 389 Chiswick High Road London
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