1、A.E.C.M.A. STANDARD prEN2792 IssueP 1 April 1986 NORME A.E.C.M.A. A.E.C.M.A. NORM UDC : 629.7.02:621.827.1:621.85.053.004.1 v) u Q LU w w a i= w Key words : Aircraft industry, flight control, rod-ends, threaded ends, dimensions, statics loads ENGLISH VERSION Aerospace series Rod-ends, adjustable dou
2、ble fork and threaded shank Dimensions and loads . . -. . Srie arospatiale Embouts rglables chape double et tige filete Dimensions et charges Luft- und Raumfahrt Einstellbare Doppelgabelkpfe mit Gewindeschaft Mae und Belastungen Tliis standard is initially published on green paper for the needs of A
3、ECMA-Members (Association Europenne des Constructeurs de 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)
4、and formal agreement of the Official Services of the Member countries it will be published in its final version on yellow paper as an AECMA Standard. I Nota - Extra copies can be supplied by B.N.A.E - 8, rue Moreau-Vauthier - 92100 BOULOGNE-BILLANCOURT I I CI Chairman I Comments should be sent withi
5、n six months after the date of publication decision I Edition approved for publication I Mr MOUTARDE I A.E.C.M.A. I 88, Bd. Malesherbes . 22 April 1986 I I 75008 PARIS - FRANCE I . prEN2792 Page 3 I Scope and field of application This standard specifies the characteristics of adjustable rod ends con
6、sisting of : - a double fork - a threaded shank consisting of : - a circumferential groove to identify location - a longitudinal groove for locking purposes These rod ends are intended for use with flying control rods or rods for aerospace structures. The cadmium plating restricts the application to
7、 temperatures not exceeding 235 OC, 2 References IS0 3353-1 976 IS0 5855/1-1981, Aerospace construction MJ threads - Part 1 : Basic profile IS0 5855/2-1981, Aerospace construction MJ threads - Part 2 : Dimensions for bolts and nuts EN21 33 ._ . - . ._. _- -_ - _. .than 1450 MPa and copper and copper
8、 alloys - Aerospace series EN21 37 EN2438 EN2601 , Aerospace construction - Rolled threads - Run-out and lead threads , Cadmium plating of steels with maximum specified tensile strength equal to or less , Steel FE-PL75,ll O0 MPa Rm 1250 MPa, Bars, De 1 O0 mm - Aerospace series , Steel FE-PL62, 900 M
9、Pa Rm 1 I O0 MPa, Bars, De 40 mm - Aerospace series , Aerospace series - Fork ends - Technical specification 1 ) 3 Materia Steel EN2438 or Steel EN21 37 4 Surface treatment Cadmium plating EN21 33, except on the bore d. Thickness : 7 to 20 pm except thread 5 to 1 O pm. 7) In preparation prEN2792 Pag
10、e 4 5 Required characteristics 5.1 Dimensions - Tolerances - Mass Configuration shall correspond with the figure. Dimensions and tolerances shall correspond with the figure and the table. Dimensions apply after cadmium plating. 5.2 Surface roughness See figure. Values before cadmium plating. d secti
11、on B-B Break sharp IS0 3353 corners section A-A Groove I$ = d, min. : (see IS0 5855/2) _. Detail Y 1.61 I I sl Incornpietc thread according to IS0 3353 I- . -. Figure Detail Z Note : The circumferential indication groove and the longitudinal groove over distance M shall be painted red. prEN2792 Page
12、 5 CD N 7 b O N m 09 W m * d- O * I o- v. N 3- x - N - m O v) * * O d- N o- v) m O prEN2792 Page 6 AECMA PREN2792 86 3012333 0004396 B 6 Designation Each adjustable double fork rod-end fitting shall only be designated as in the following example : identity block I Description b I ock Rod-end 1 EN279
13、281 Number of EN standard ?- 08 = size code (see table) L = code for left hand thread When the following codes are applied : L = left hand thread R = right hand thread Note : if necessary, the originators code S9005 may be introduced between the description block and identity block. 7 Marking In addition to the manufacturers own marking, each rod-end (see figure) and the package shall be marked, using the identity block specified in clause 6 of this standard. 8 Technical specification Rod-ends supplied to this standard shall conform with the requirements of EN2601.
