BS EN 2066-2002 Aerospace series - Extruded section in aluminium alloys - General tolerances《航空航天系列 铝合金挤制型材 一般公差》.pdf

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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 LAWBS EN 2066:2002 This British Standard,

2、 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 January 2002 BSI 07 January 2002 ISBN 0 580 38027 0 National foreword This British Standard is the official Englis

3、h 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, which has the responsibility to: A list of organizations represented on this committee can be obtained on req

4、uest 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 under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of

5、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 application. Compliance with a British Standard does not of itself confer immunity from legal obligations. a

6、id 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 related international and European developments and promulgate them in the UK. Summary of pages This document c

7、omprises 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 document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPE

8、NNE EUROPISCHENORM EN2066 December2001 ICS49.025.20 Englishversion AerospaceseriesExtrudedsectioninaluminiumalloys Generaltolerances SriearospatialeProfilsfilsenalliagesdaluminium Tolrancesgnrales LuftundRaumfahrtStrangpreprofileaus AluminiumlegierungenAllgemeineToleranzen ThisEuropeanStandardwasapp

9、rovedbyCENon2May2001. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheMan

10、agementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalst

11、andardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:rued

12、eStassart,36B1050Brussels 2001CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN2066:2001EEN2066:2001(E) 2 Foreword ThisEuropeanStandardhasbeenpreparedbytheEuropeanAssociationofAerospaceManufacturers (AECMA). Afterinquiriesandvotescarriedoutinaccordan

13、cewiththerulesofthisAssociation,thisStandardhas receivedtheapprovaloftheNationalAssociationsandtheOfficialServicesofthemembercountriesof AECMA,priortoitspresentationtoCEN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidentical textorbyendorsement,atthelatestbyJ

14、une2002,andconflictingnationalstandardsshallbewithdrawnat thelatestbyJune2002. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark, Finland,France,Germany,Greece,Iceland,Ir

15、eland,Italy,Luxembourg,Netherlands,Norway,Portugal, Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN2066:2001(E) 3 0 Introduction ThisstandardispartoftheseriesofENmetallicmaterialstandardsforaerospaceapplications.Thegeneral organizationofthisseriesisdescribedinEN4258. 1 Scope Thisstandardspecifiestheg

16、eneraltolerancesof: Extrudedsection inaluminiumalloys foraerospaceapplications. Itapplies: tosections,standardizedordefinedbyadrawing,thecrosssectionofwhich,regularorirregular,can beinscribedinacircleof250mm(seefigure1), Figure1 tosemihollowsections,thedimensionallimitsofwhichareindicatedinfigures2a

17、nd3. x.y 2,5 x 2 y.z 2,5 x 2 Figure2 Figure3 Forsectionswithhigherdimensionsorofmorecomplexforms,thetolerancesshallbesubjecttoagreement betweenthemanufacturerandpurchaser.EN2066:2001(E) 4 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreferenceprovisionsfromotherpublications.

18、Thesenormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelisted hereafter.Fordatedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplyto thisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthe latesteditionofthepublica

19、tionreferredtoapplies. EN4258 AerospaceseriesMetallicmaterialsGeneralorganizationofstandardizationLinks betweentypesofENstandardsandtheiruse 3 Dimensionaltolerances 3.1 Transversecrosssection Toobtaintheadequatetolerance,thetransversecrosssectioncanbedividedintoelementaryrectanglesof dimensionsAandB

20、;whereAisalwaysthelargestdimensionoftheelementarypartand Bcanbe consideredasthethicknessofthesection(seefigure4). Figure4 a) Toleranceson A Seetable1. Table1 Dimensionsinmillimetres A Tolerances 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

21、EN2066:2001(E) 5 Thesetolerancesonlyapplyif B A 20. For B A 20,tolerancesshallbethesubjectofanagreementbetweenthemanufacturerandtheuser. b) Toleranceson B Seetable2. Table2 Dimensionsinmillimetres Toleranceson Bfor: B A 10 10 A 18 18 A 30 30 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

22、 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 Table2 (concluded) Dimensionsinmillimetres Toleranceson Bfor: B 50 A 80 80 A 120 120 A 180 180 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

23、,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 Thesetolerancesonlyapplyif min. max. B B 4. If4 min. max. B B 8,thetolerancesareincreasedby: 20%if B 18mm 10%if B 18mm 3.2 Lengths Thetoleranceofthesectionsinfixedlengthshallbe( 0 20 )mm.EN2066:2001(E) 6 3.3 Beadseatradius Thetole

24、rancesofthebeadseatradiusshallbe 10%oftheradiusvaluewithaminimumtoleranceof 0,4mm. 4 Formtolerances 4.1 Straightness Seefigure5. Key 1 Planesurface Figure5 Ontotallength X 1 ,thedifferenceinstraightness Y 1 shallsatisfy: Y 1 0,002 X 1 . Locally,oneachportion X 2 =400mm: Y 2 0,8mm. 4.2 Transverseflat

25、ness Seefigure6. Themaximumdifferenceofthetransverseflatness fshallsatisfythefollowingconditions: f 0,006 A f 0,2mm Figure6EN2066:2001(E) 7 4.3 Angulardimensions Theangulardimensions shallbemeasuredatthepointoforiginoftheangle,asindicatedinfigure7. Theangulartolerance betweenthetwofacesisgivenintabl

26、e3: Figure7 Table3 Thickness B a mm Angulartolerance 1,5 1,5 1,5 1 a Inthecaseofasectionwithtwodifferentthicknesses B,theangulartolerance applicabletothegreatestthickness Bshallbeapplied. 4.4 Twist Thetwist Vshallbemeasuredasindicatedinfigure8. V k B Figure8EN2066:2001(E) 8 Thetwisttolerancesindicat

27、edintable4applytosectionswithlinearmassessuperiorto0,250kg/m. Table4 Dimensionsinmillimetres Valuesofcoefficient k: Diameter ofenvelopingcircle permeterlength k max. onthetotallength D 25 0,05 0,10 25 D 50 0,04 0,07 50 D 100 0,03 0,05 100 D 250 0,02 0,04BS EN 2066:2002 BSI 389 Chiswick High Road Lon

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