1、BRITISH STANDARD AEROSPACE SERIES BS ISO 10955:1999 End-fittings and turnbarrels for aircraft control wire rope Technical specification ICS 49.035BSISO 10955:1999 This British Standard, having been prepared under the directionof the Engineering SectorCommittee, was publishedunder the authorityofthe
2、Standards Committee and comes into effect on 15 November 1999 BSI 04-2000 ISBN 0 580 35039 8 National foreword This British Standard reproduces verbatim ISO 10955:1999 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee ACE/14,
3、Aerospace details and parts, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European
4、 developments and promulgate them in the UK. 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
5、 Catalogue under 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 t
6、heir correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theISO title page, pagesii toiv, pages1 to9 and a back cover. This standard has been up
7、dated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSISO 10955:1999 BSI 04-2000 i Contents Page National foreword Inside front cover Foreword iii Text
8、of ISO 10955 1ii blankBSISO 10955:1999 ii BSI 04-2000 Contents Page Foreword iii 1 Scope 1 2 Normative references 1 3 Terms and definitions 2 4 Requirements 2 5 Quality assurance 4 6 Packaging 5 7 Certificate of conformity 5 Figure 1 Imperfections in external threading at the crest of the threads 8
9、Figure 2 Imperfections in external threading on the flank of the threads 8 Figure 3 Imperfections in internal threading 9 Table 1 Technical requirements and inspection and test methods 2 Table 2 Qualification inspections and tests for swaged end-fittings and wire rope turnbarrel parts 6 Table 3 Qual
10、ification tests for wire rope turnbarrel assemblies 6 Table 4 Acceptance inspections and tests 6 Table 5 Acceptable quality level plan 7 Table 6 Sampling plan 8 Table 7 Maximum angular movement 9 Table 8 Load limits 9 Table 9 Load limits 9BSISO 10955:1999 BSI 04-2000 iii Foreword ISO (the Internatio
11、nal Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been
12、established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standar
13、dization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an InternationalStandard requires approval by at least75
14、% of the member bodies casting a vote. International Standard ISO 10955 was prepared by Technical Committee ISO/TC20, Aircraft and space vehicles, Subcommittee SC12, Mechanical system parts.iv blankBSISO 10955:1999 BSI 04-2000 1 1 Scope This International Standard specifies the characteristics, the
15、inspection and test methods as well as the quality assurance requirements for: end-fittings swaged on wire ropes, as specified in ISO9737, ISO9747, ISO9748, ISO9749, ISO9759 and ISO9760, wire rope turnbarrel parts, as specified in ISO9736, ISO9738, ISO9757, ISO9758 and ISO9761, and wire rope turnbar
16、rel assemblies (as defined in3.1), used in aircraft controls. This International Standard is applicable to the parts cited above providing that reference is made to it in the product standard or the definition document. 2 Normative references The following normative documents contain provisions whic
17、h, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the poss
18、ibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 2020-1:1997, Aerospace Preforme
19、d flexible steel wire rope for aircraft controls Part 1: Dimensions and loads. ISO 2859-1:, Sampling procedures for inspection by attributes Part 1: Sampling plans indexed by acceptable quality level (AQL) for lot-by-lot inspection 1) . ISO 5855-2:, Aerospace MJ thread Part 2: Limit dimensions for b
20、olts and nuts 2) . ISO 8074:1985, Aerospace Surface treatment of austenitic stainless steel parts. ISO 8785:1998, Geometrical Product Specification (GPS) Surface imperfections Terms, definitions and parameters. ISO 9001:1994, Quality systems Model for quality assurance in design, development, produc
21、tion, installation and servicing. ISO 9002:1994, Quality systems Model for quality assurance in production, installation and servicing. ISO 9003:1994, Quality systems Model for quality assurance in final inspection and test. ISO 9736:1999, Aerospace Eye-ends, in corrosion-resistant steel, threaded,
22、for aircraft control wire rope Dimensions and loads. ISO 9737:1999, Aerospace Eye-ends, in corrosion-resistant steel, swaged on aircraft control wire rope Dimensions and loads. ISO 9738:1999, Aerospace Turnbarrels, for aircraft control wire rope Dimensions and loads. ISO 9747:1999, Aerospace Double-
23、shank ball-ends, in corrosion-resistant steel, swaged on aircraft control wire rope Dimensions and loads. ISO 9748:1999, Aerospace Ball-ends, in corrosion-resistant steel, swaged on aircraft control wire rope Dimensions and loads. ISO 9749:1999, Aerospace Stud-ends, in corrosion-resistant steel, swa
24、ged on aircraft control wire rope Dimensions and loads. ISO 9757:1999, Aerospace Fork-ends, in corrosion-resistant steel, threaded, for aircraft control wire rope turnbarrels Dimensions and loads. ISO 9758:1999, Aerospace Fork-ends, in corrosion-resistant steel, threaded, for rolling bearings, for a
25、ircraft control wire rope Dimensions and loads. ISO 9759:1999, Aerospace Fork-ends, in corrosion-resistant steel, swaged aircraft control wire rope Dimensions and loads. ISO 9760:1999, Aerospace Fork-ends, in corrosion-resistant steel, swaged on aircraft control wire rope, for rolling bearings Dimen
26、sions and loads. ISO 9761:1999, Aerospace Locking clips, in corrosion-resistant steel, for aircraft control wire rope turnbuckles Dimensions. ISO 9762:1999, Aerospace Aircraft control wire rope assemblies Dimensions and end-fitting combinations. ISO 9763:1999, Aerospace Aircraft control wire rope as
27、semblies Technical specification. 1) To be published. (Revision of ISO 2859-1:1989) 2) To be published. (Revision of ISO 5855-2:1988)BSISO 10955:1999 2 BSI 04-2000 3 Terms and definitions For the purposes of this International Standard, the following terms and definitions apply. 3.1 wire rope turnba
28、rrel assemblies assemblies consisting of two preformed flexible steel wire ropes, which have a swaged end-fitting on one side and a threaded end-fitting on the other NOTE 1The threaded ends are connected by means of a turnbuckle and secured by means of a locking clip. NOTE 2Specifications for turnba
29、rrels and locking clips are given in ISO9738 and ISO9761, respectively. 3.2 surface imperfections burrs, cracks, laps and scratches as defined in ISO8785 3.3 manufacturing batch number of elements with the same identity block, produced within the same production cycle, manufactured from the same bat
30、ch of raw material and subjected to the same heat treatment 3.4 delivery batch (homogeneous) batch from the same manufacturing batch for which the sampling plan applies to the whole of this delivery batch 3.5 delivery batch (heterogeneous) batch made up of several manufacturing batches for which the
31、 sampling plan applies to each manufacturing batch 4 Requirements The requirements are given inTable 1 and, unless otherwise specified, they also apply to ready for use parts. The test temperature shall, unless otherwise specified, be ambient temperature. These requirements shall be taken into accou
32、nt along with the conditions which figure in all the other standards or specifications cited in the product standards or the definition documents for end-fittings and cable turnbarrels. Table 1 Technical requirements and inspection and test methods No. Characteristic Technical requirements Inspectio
33、n and test methods Q a A b 4.1 Dimensions and masses In accordance with the product standards or definition documents. Usual measuring instruments. Thread: GO-NO GO gauge. 4.2 Material In accordance with the product standards or definition documents. Chemical analysis or by the intermediary of a cer
34、tificate of conformity supplied by the manufacturer for the half-finished product. 4.3 Surface treatment In accordance with the product standards or definition documents. In accordance with the surface treatment standard. 4.4 Surface roughness In accordance with the product standards or definition d
35、ocuments. Usual instruments or visuotactile samples. 4.5 Surface appearance Absence of any surface imperfections other than those permitted in 4.9. Usual inspection methods. Burrs acceptable in the thread/groove area for the locking clip if they do not hinder assembly of the end-fitting and the lock
36、ing clip. 4.6 Marking In accordance with the product standards or definition documents. Visual examination. It shall be legible and shall not damage the material or affect proper operation. 4.7 Left-hand thread mark In accordance with the product standards or definition documents. Visual examination
37、. 4.8 Thread External thread rolled and free of burrs. Visual examination. BSISO 10955:1999 BSI 04-2000 3 Table 1 Technical requirements and inspection and test methods No. Characteristic Technical requirements Inspection and test methods Q a A b 4.9 Thread breaks External thread: in accordance with
38、 Figure 1 andFigure 2. Inspection on micrographic section: for qualification, on finished parts; Internal thread: in accordance with Figure 3. for acceptance, by sampling during manufacture. 4.10 Turnbarrel assembly device locking play Angular movement of the end-fittings in relation to the turnbarr
39、el: seeTable 7 Hold the turnbarrel assembly in a vice. Apply torque to each end-fitting: of a value in accordance withTable 7; clockwise then anticlockwise. Measure the angle of rotation of each end-fitting in relation to the turnbarrel: while the torque is being applied; using a normal instrument.
40、4.11 Effectiveness of the locking of turnbarrel assemblies The locking clip shall: Apply to the turnbarrel for 25 hours: stay in place; a longitudinal pulling force equal to25% of the minimum breaking force given inTable 9; maintain its effectiveness. vibrations at a frequency of 50 Hz and of a rang
41、e of 3,15 mm along a perpendicular axis in relation to the turnbarrel. Carry out a visual examination of the turnbarrel assembly. 4.12 Torsional strength of turnbarrel assemblies After testing there shall be: Hold one of the ends of the turnbarrel assembly in a vice. neither cracking, Apply to the o
42、ther end torque of a value equal to that given inTable 8, first clockwise then anticlockwise. nor distortion, nor fracture, of the turnbarrel parts. Do this five times (i.e.10 inversions). Carry out a visual examination and/or use the usual measuring methods.BSISO 10955:1999 4 BSI 04-2000 Table 1 Te
43、chnical requirements and inspection and test methods 5 Quality assurance 5.1 General 5.1.1 Manufacturers approval The manufacturer shall satisfy the quality assurance and approval procedures defined in ISO9001, ISO9002 or ISO9003. The aim of these procedures is to ensure that a manufacturer has a qu
44、ality system and that he is capable of manufacturing, on a regular basis, control cable assemblies which fulfil the specified quality conditions. The manufacturers approval shall be granted by the Certification Authorities, or their delegated representative, who may be the main contractor. 5.1.2 Qua
45、lification of end-fittings and wire rope turnbarrels The purpose of qualification inspections and tests for end-fittings and wire rope turnbarrels is to verify that the design and that the manufacturing conditions of these parts are such that the conditions of this International Standard are satisfi
46、ed. No. Characteristic Technical requirements Inspection and test methods Q a A b 4.13 Fatigue strength of turnbarrel assemblies under tensile load After testing there shall be: Use a test device capable of transmitting the test load to the turnbarrel assembly under exactly the same conditions as du
47、ring normal use. neither permanent elongation 0,1%, nor fracture, of the turnbarrel parts. If this device contains a swaged cable, the latter shall be: flexible, in accordance with ISO 2020-1, have a nominal diameter corresponding to that of the turnbarrel used, swaged in accordance with ISO 9763. S
48、crew the threaded ends until the thread is no longer visible. Apply an increasing and decreasing force between the maximum and minimum values given inTable 9 longitudinal to the turnbarrel assembly. Do this 300 times (i.e.600 inversions). Carry out a visual examination or using the usual means. 4.14
49、 Ultimate tensile resistance of turnbarrel assemblies After testing, there shall be no fracture of the turnbarrel parts. Use the same device as in 4.13. Apply a tensile force equal or superior to the cables minimum breaking load given inTable 9 longitudinal to the turnbarrel assembly. Perform a visual examination and/or using the usual means. a Q = conditions for executing qualifi
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