1、A.E.C.M.A. STANDARD prEN2586 NORME A.E.C.M.A. Issue P 1 A.E.C.M.A. NORM April 1986 UDC : 629.7.051621 -827.1 :621.882.4-59.004.1:669.14:669.738 Key words : Aircraft industry, aircraft control, rod-ends fittings, lock washer, steel, cadmium, dimension ENGLISH VERSION Aerospace series Washers, lock fo
2、r flight control robs Dimensions Srie arospatiale Rondelles freins pour bielles de commandes de vol Dimensions Luft- un.d Raumfahrt Sicherungsschei ben fr Bediengestange Mae This standard is initially published on green paper for the needs of AECMA-Members (Association Europenne des Constructeurs de
3、 Matriel Arospatial). It has been technically approved by the experts of the concerned AECMA Commission following comment by the manufacturers of the Member countries. After examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Mem
4、ber countries it will be published in its final version on yellow paper as an AECMA Standard. Nota - Extra copies can be supplied by 6.N.A.E - 8, rue Moreau-Vauthier - 921 O0 BOULOGNE-BILLANCOURT CI Chairman I Comments should be sent within six months after the date of publication decision I Edition
5、 approved for publication AECMA PREN2586 86 1012311 0003637 7 e prEN2586 Page 3 1 Scope and field of application This standard specifies the characteristics of lock washers for flight control rods. These lock washers are intended to immobilise the end fitting in relation to the rod bodywhilst allowi
6、ng a positional adjustement of 1 /2 turn. 2 References EN21 33 EN221 7 EN2252 , Cadmium plating of steels with maximum specified tensile strength equal to or less than 1450 MPa and copper and copper alloys - Aerospace series , Steel FE-PL52 s-1080 MPa Rm 1250 MPa Sheets and plates 2 mm a 20 mm - Aer
7、ospace series , Steel FE-PL52 s-1080 MPa G Rm 2 1250 MPa Hand and die forgings De 1 O0 mm - Aerospace series 3 Material and surface treatment 3.1 Material Steel EN221 7 or Steel EN2252 3.2 Surface treatment Cadmium plating EN21 33, 1 O to 20 ,ym. 4 Required characteristics 4.1 Dimensions - Tolerance
8、s - Masses The configuration shall correspond with the figure and the dimensions shall conform with the values indicated in the table. The values apply after cadmium plating. 4.2 Surface roughness See figure, values prior to cadmium plating. - 2 trous C - 0 0,4 Identification mark I R 0,13 to0,4 E,
9、GI2 - 1 - AECMA PREN25Bb b = L0123LL 0003b3B 7 W prEN2586 Page 4 Diameter A B F D E -0,25 C O I0,15 +O“ &O, 1 5 code &O, 1 f0,25 08 82 16 1 ,o 1,3 1 ,o 1,6 io 10,2 20 1 ,o 2,o 1 ,o 1,6 12 12,2 22 1,s 2,o 12 13 14 14,2 26 13 2,9 15 13 16 16,3 28 13 23 13 2,4 Table Dimensions in millimetres H Mass O %
10、 G f0,l -o,15 2,38 68 3,s 2,80 8,3 5,6 2,80 10,5 72 3,lO 12,5 10,7 3,16 14,O 12,7 5 Designation Each lock washer shall only be designated as in the following example : ._ Description block Identity block I Washer lock B - Number of EN standard 08= diameter code (see table) Note : if necessary, the o
11、riginators code S9005 may be introduced between the description block and the identity block. 6 Marking In addition tothe manufacturersown marking, each lock washer and its packaging shall be marked, using the identity block defined in clause 5 of this standard. The marking position and method are at the manufacturers option. The marking when it is possible, shall be indelible and shall not impair the characteristics of lock washer.
