1、BRITISH STANDARD AEROSPACE SERIES BS EN 2544:1990 Specification for Representation of rivets on drawings for aerospace equipment This European Standard EN 2544 has the status of a British Standard. UDC 629.7:003.62:621.884BSEN2544:1990 This British Standard was published under the authorityofthe Boa
2、rd of BSIandcomes into effecton 28September1990 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference ACE/- Draft for comment 84/76077 DC ISBN 0 580 18678 4 Cooperating organizations The European Committee for Standardization, under whose supervision this
3、European Standard was prepared, comprises the national standards organizations of the following Western European countries. Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalisation Denmark Dansk Standardiseringsraad Finland Suomen Standardisoimisliito, r.y. France Associati
4、on franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Ireland National Standards Authority of Ireland Italy Ente Nazionale Italiano di Unificazione Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund P
5、ortugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certificacin Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date of issue Comment
6、sBSEN2544:1990 BSI 01-2000 i Contents Page Cooperating organizations Inside front cover National foreword ii Brief history 2 Text of EN 2544 3 National appendix A Inside back coverBSEN2544:1990 ii BSI 01-2000 National foreword This British Standard has been prepared under the direction of the Aerosp
7、ace Standards Policy Committee and is the English language version of EN2544“Aerospace series. Representation of rivets on drawings for aerospace equipment” published by the European Committee for Standardization (CEN). EN2544 was produced as a result of international discussion in which the UK took
8、 an active part. 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. Summary of pages This do
9、cument comprises a front cover, an inside front cover, pagesi andii, theENtitle page, pages2 to6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cov
10、er.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN2544 April1987 UDC629.7:003.62:621.884 Key words: Graphic methods, graphic symbols, technical drawings, rivets English version Aerospace series Representation of rivets on drawings for aerospace equipment Srie arospatiale Reprsentation des rivet
11、s sur les dessins de matriels arospatiaux Luft- und Raumfahrt-Reihe Darstellung von Nieten in Zeichnungen von Luft- und Raumfahrtgert This European Standard was accepted by CEN on12August 1986. CEN members are bound to comply with the requirements of CEN Internal Regulations which stipulate the cond
12、itions 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 Central Secretariat or to any CEN member. This European Standard exists in t
13、hree 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 CEN Central Secretariat has the same status as the official versions. CEN members are the national standards organizati
14、ons of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Ireland, Italy, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassa
15、rt 36, B-1050 Brussels CEN 1987 Copyright reserved to all CEN members Ref. No. EN 2544:1987 EEN2544:1987 BSI 01-2000 2 Brief history This European Standard has been prepared by the European Association of Aerospace Constructors (AECMA). After enquiries and votes carried out in accordance with the ru
16、les of this Association it has successively received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. According to the Common CEN/CENELEC Rules, the following countries are bound to implement this European Standar
17、d: Belgium, Germany, Italy, Netherlands, Spain, UnitedKingdom. Contents Page Brief history 2 1 Scope and field of application 3 2 General 3 3 Presentation of symbols 3EN2544:1987 BSI 01-2000 3 1 Scope and field of application This standard specifies the representation of rivets on drawings for aeros
18、pace equipment. 2 General The representation of rivets on drawings shall conform to one of the following two methods: either by conventional drawing of the rivets. This method is more particularly suitable for drawings containing a small number of rivets, or when the use of symbols does not offer al
19、l the safeguards for understanding. or by the use of symbols. This method is more specially suited for drawings containing a large number of rivets and is covered by the following clauses of this standard. It shall meet the requirements arising from microcopying and reproduction of drawings. 3 Prese
20、ntation of symbols The reference of this standard shall be quoted in all drawings containing rivets by this symbol method. 3.1 Symbols for a set rivet A set rivet is indicated by a cross. The quadrants of the cross contain the information regarding rivet and rivet assembly. See next paragraphs. 3.1.
21、1 Indications in upper left hand quadrant The following appear in this quadrant: letter R, indicating that the cross represents a rivet 1) . the numerical reference allocated to the rivet in the definitions parts list of the drawing or in a table on the drawing giving the necessary information for d
22、efinition of the rivet (head form, material, diameter, length, surface treatment,). Example: In the case of a composite rivet, if the sleeve is covered by a numerical reference in the parts list, this reference shall be entered below that of the rivet. Example: 1) The use of letter R is optional. If
23、 it is used, it shall be followed by the numerical reference allocated to the rivet. Symbol Significance Solid rivet 23 or R23 = Rivet ident. 23 in parts list or in a table Symbol Significance Composite rivet 32 or R32 = Numerical reference of rivet in parts list or in a table 35 = Numerical referen
24、ce of sleeve in parts list or in a tableEN2544:1987 4 BSI 01-2000 3.1.2 Indications of upper right hand quadrant This quadrant contains a letter giving the position of the pre-formed head. If the pre-formed head appears distinctly on the drawing, the letter is unnecessary. N for Near side F for Far
25、side Examples: 3.1.3 Indications of lower left hand quadrant 3.1.3.1 Countersink A countersink shall be indicated by an equilateral triangle orientated as follows in the quadrant: u for the near side t for the far side If this countersink appears clearly on the drawing, indication by a triangle is u
26、nnecessary. If the countersink angle is 100 , the triangle is sufficient. If the countersink angle is other than 100 , the value of the angle is placed on the right of the triangle. Examples: 3.1.3.2 Dimpling Dimpling shall be indicated by a symbol orientated as follows in the quadrant: for the near
27、 side for the far side If this dimpling appears clearly on the drawing, indication by symbol is unnecessary. If the dimpling angle is 100 , the symbol is sufficient. If the dimpling angle is other than 100 , the value of the angle is placed on the right of the symbol. If several sheets are dimpled,
28、their number precedes the symbol Symbol Significance Preformed head, near side Preformed head, far side Symbol Significance 100 countersink, near side 82 countersink, far side 100 countersink, both sidesEN2544:1987 BSI 01-2000 5 Examples: 3.1.3.3 Combined countersink and dimpling The combination of
29、a countersink and a dimpling shall be indicated by symbol and an equilateral triangle The orientation of these symbols and the angle indication shall conform to paragraph3.1.3.1 and3.1.3.2. If appropriate, the angle shall be quoted after those symbols. Examples: 3.1.4 Lower right hand quadrant This
30、quadrant does not contain any information. 3.2 Symbols used for a line of rivets 3.2.1 The crosses are aligned: Either in the direction of the line of rivets Example: Or along the axes of the drawing Symbol Significance 100 dimpling, near side Two sheets, 82 dimpled on far side Symbol Significance 1
31、st sheet dimpled, 100 , on near side 2nd sheet countersunk, 100 , on near side 1st sheet dimpled, 82 , on near side 2nd sheet countersunk, 82 , on near sideEN2544:1987 6 BSI 01-2000 Example: The indications are given either in the drawing, if space is available, or outside it, with an arrow indicati
32、ng the corresponding rivet assembly. Examples: 3.2.2 The position of the rivets as well as the riveting pitch shall be indicated with dimensions by conventional drawing methods. When the rivets are aligned, identical and equi-distant, the indications should be entered in the first and last cross of
33、the series. Example:BSEN2544:1990 BSI 01-2000 National appendix A The United Kingdom participation in the preparation of this European Standard was entrusted by the Aerospace Standards Policy Committee (ACE/-) to Technical Committee ACE/-/1 upon which the following bodies were represented: British A
34、irways Civil Aviation Authority (Airworthiness Division) Ministry of Defence Society of British Aerospace Companies Ltd.BS EN 2544:1990 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents
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