BS ISO 9633-2001 Cycle chains - Characteristics and test methods《自行车链条 特性和试验方法》.pdf

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1、BRITISH STANDARD BS ISO 9633:2001 Cycle chains Characteristics and test methods ICS 43.160;21.220.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS ISO 9633:2001 This British Standard, having been prepared under the direction of the Engineering Sector Committee, was publish

2、ed under the authority of the Standards Committee and comes into effect on 15 September 2001 BSI 07-2001 ISBN 0 580 38303 2 National foreword This British Standard reproduces verbatim ISO 9633:2001 and implements it as the UK national standard. The UK participation in its preparation was entrusted t

3、o Technical Committee MCE/1, Chains and chain wheels for power transmission, which has the responsibility to: 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 publicatio

4、ns 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 the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provision

5、s 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. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on

6、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 comprises a front cover, an inside front cover, the ISO title page pages ii to iv, pages 1 to 13 and

7、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 CommentsINTERNATIONAL STANDARD ISO 9633 Second edition 2001-07-01 Reference number ISO 9633:2001(E) Cycle chains Characteristics and test met

8、hods Chanes pour cycles Caractristiques et mthodes de contrleii ISO 9633:2001(E) iii Contents Page 1 Scope . 1 2 Normative reference . 1 3 Terms and definitions 1 4 Cycle chains . 2 5 Determination of twist . 5 6 Determination of lateral deviation . 9 7 Detection of a stiff link 11 8 Determination o

9、f side bow 11 Annex A Examples of calculation of twist value 13ISO 9633:2001(E) iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out throu

10、gh ISO technical committees. Each member body interested in a subject for which a technical committee has been 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 collabora

11、tes closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are cir

12、culated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not

13、be held responsible for identifying any or all such patent rights. International Standard ISO 9633 was prepared by Technical Committee ISO/TC 100, Chains and chain wheels for power transmission and conveyors. This second edition cancels and replaces the first edition (ISO 9633:1992), which has been

14、revised to reflect improvements in the design and manufacture of cycle chains. This edition specifies a lower minimum tensile strength for 082 C chains and deals with the measurement of pin push-out resistance. Annex A of this International Standard is for information only.INTERNATIONAL STANDARD ISO

15、 9633:2001(E) 1 Cycle chains Characteristics and test methods 1 Scope This International Standard specifies the dimensions and mechanical properties of cycle chains, as well as test methods for determining these mechanical properties (i.e. twist, lateral deviation, stiff link and side bow). NOTE The

16、 dimensions of sprockets for cycle chains are specified in ISO 606. 2 Normative reference The following normative document contains provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of,

17、 any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated below. For undated references, the latest edition of the normative docume

18、nt referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 606:1994, Short-pitch transmission precision roller chains and chain wheels. 3 Terms and definitions For the purposes of this International Standard, the following terms and definitions

19、apply. 3.1 lateral deviation condition when the actual centreline of the chain is not straight 3.2 side bow condition characterized by the height of an arc assumed by the chain in a plane parallel to the plane of the chain pins, when the chain is laterally deflected to the maximum extent permitted b

20、y its internal tolerances 3.3 stiff link condition when a chain link cannot be articulated smoothly through an angle of , to the right and to the left, from the alignment axis of the two adjacent links 3.4 twist condition when the axes of articulation of the chain links are not in the same plane 60

21、ISO 9633:2001(E) 2 4 Cycle chains 4.1 Designation Chains complying with all the requirements of this International Standard are exclusively intended for use on cycles. Cycle chains, denoted by the suffix C, shall be designated by the standard ISO chain numbers given in Table 1. 4.2 Dimensions Cycle

22、chains shall comply with the dimensions shown in Figure 1 and specified in Table 1. These dimensions ensure interchangeability of complete chains produced by different manufacturers. Type I: regular roller chain Type II: non-bush chain Figure 1 Chain (see Table 1)ISO 9633:2001(E) ISO 1002 All rithgs

23、 rreseved 3 Table 1 Principal dimensions, measuring forces, push-out forces and tensile strengths of chains (Figure 1) ISO chain number Chain struc- ture Pitch Roller diameter Width between inner plates Bearing pinbody diameter Bush bore Chain path depth Inner plate depth Outer plate depth Clear- an

24、ce between inner and outer link Width over bearing pins a Addi- tional width for joint fastener b Measur- ing force Push- out force Tensile strength mm N 081 C Type I 12,7 7,75 3,3 3,66 3,69 10,2 9,9 9,9 0,05 10,2 1,5 125 8 000 082 C Type I 12,7 7,75 2,38 3,66 3,69 10,2 9,9 9,9 0,1 8,2 125 780 8 000

25、 c 082 C Type II 12,7 7,75 2,38 3,66 3,69 9 8,7 8,7 0,05 7,4 125 780 8 000 c a The actual dimensions of 082 C chain will depend on the type of derailleur used but should not exceed the given dimension, details of which should be obtained by the purchaser from the manufacturer. b The actual dimension

26、 will depend on the type of fastener used but should not exceed the given dimension, details of which should be obtained by the purchaser from the manufacturer. c Chains having a higher minimum tensile strength may be supplied if agreed between the purchaser and manufacturer. pd 1 b 1 d 2 d 3 h 1 h

27、2 h 3 b 3 b 2 b 4 b 7 max. min. max. min. min. max. max. min. max. max. min. min.ISO 9633:2001(E) 4 4.3 Tensile testing The minimum tensile strength of each chain shall be as specified in Table 1. The values are only valid for the following test lengths and conditions. A tensile force, not less than

28、 the minimum tensile strength specified in Table 1, shall be applied slowly to the ends of a chain length containing at least five free pitches, by means of shackles permitting free movement on both sides of the chain centreline in the normal plane of articulation. Failure shall be considered to hav

29、e occurred at the first point where increasing extension is no longer accompanied by increasing load, i.e. the summit of the force/extension diagram. Tests in which failures occur adjacent to the shackles shall be disregarded. The tensile test shall be considered a destructive test and the tested sa

30、mple shall be discarded. 4.4 Push-out force 4.4.1 Select a pin link from a finished chain. 4.4.2 Place the pin link, consisting of an outer plate and two riveted pins, on the test apparatus shown in Figure 2. Key 1 Load 2 Pusher 3 Bearing pins (2) 4 Outer plate 5 Tool Figure 2 Test apparatus for mea

31、surement of pin push-out resistanceISO 9633:2001(E) 5 4.4.3 Apply the load slowly to the pusher until the pin is pushed out of the outer plate. 4.4.4 The minimum load for pushing out a pin from an outer plate of 082 C chain shall be as specified in Table 1. 4.4.5 When taking a sample from a chain, c

32、are shall be taken to ensure that there is no extra strain between the outer plate and the two riveted pins. 4.5 Pre-loading Chains manufactured in accordance with this International Standard shall be pre-loaded by the application of a tensile force equivalent to one-third of the minimum tensile str

33、ength specified in Table 1. 4.6 Length accuracy The length of finished chains shall be measured after pre-loading (see 4.5) but before lubricating or after degreasing. The standard length for measurement shall be a minimum of and the chain shall terminate with an inner link at each end. The chain sh

34、all be supported throughout its entire length and the measuring force given in Table 1 shall be applied. The measured length shall be the nominal length for chain 081 C and for chain 082 C. 4.7 Marking The chain shall be marked with the manufacturers name or trademark. It is recommended that the ISO

35、 chain number specified in Table 1 be marked on the package. 5 Determination of twist 5.1 Visual detection of twist To detect twist visually, suspend the chain by one end and observe the alignment of the links. NOTE This visual check detects localized faults, whereas the procedure described in 5.2 p

36、ermits the determination of twist and gives an evaluation of the chains ability to be twisted. 5.2 Method of measuring twist 5.2.1 Apparatus The apparatus for measuring twist shall be as shown in Figure 3 and shall meet the geometric requirements demonstrated in Figure 4. 5.2.2 Test sample Choose a

37、length of cycle chain 49 links long and free from grease, each end of which consists of an inner link. 610 mm +0,15 0 % +0,15 0,08 %ISO 9633:2001(E) 6 Key 1 Balancing weight 2 Torque balance weight 3 Sliding head 4 Fixed shackle head 5 49 links of pitch 6 Pointer 7 Protractor scale Figure 3 Test app

38、aratus for determination of twist 12,7 mmISO 9633:2001(E) 7 P 1 is the vertical plane defined by the axis of displacement AB of the sliding head and the pin CD of the upper attachment of the chain. NOTE Pins CD and C D are not the end pins of the chain; they are the attachment pins of the test appar

39、atus. P 2 is a horizontal plane perpendicular to P 1 . O is the projection of the axis AB in the plane P 2 . It is the origin and the point of intersection of axis AB and the line of intersection of P 1 and P 2 . O is the centrepoint of symmetry of pin C D of the lower attachment of the chain. It ma

40、y a) coincide with O, b) lie on the line of intersection of P 1 and P 2 at a maximum distance from O, or c) li einP 2 but not on the line of intersection of P 1 and P 2 ; in that case, O should not lie outside a circle of radius , the centre of which coincides with O. is in P 2 and is the angle thro

41、ugh which pin C D c anr ot a t ei nP 2 . is in P 1 .I fO lies on the line of intersection of P 1 and P 2 , is the angle through which pin C D c a nr o t a t ei nP 1 ;i fO does not lie on the line of intersection of P 1 and P 2 , lies in any plane P parallel to P 1 and crossing the area of the circle

42、 of radius and centre O in P 2 . Figure 4 Geometry of test apparatus and geometric requirements r r rISO 9633:2001(E) 8 5.2.3 Test sample installation Suspend the chain by the upper pin CD of the attachment (see Figure 4) by means of a shackle on the sliding head permitting free rotational movement

43、on both sides of the chain centreline of . The alignment of the attachment pins before commencement of the test shall be as follows: The inner link of the lower end of the test chain shall be gripped in the first shackle head. 5.2.4 Test procedure 5.2.4.1 Apply a tensile force of to the lower end of

44、 the chain by setting the balance weight. 5.2.4.2 Apply a torque of to the lower link of the chain, first in one angular direction then in the other. 5.2.4.3 Measure the angular displacement at both sides of the apparatus zero (see Figure 5). NOTE Angle is a measure of the net twist of the chain und

45、er test about the apparatus zero in a clockwise or anticlockwise direction. The angle is in an anticlockwise direction from the apparatus zero, viewed from above, when positive, and is in a clockwise direction from the apparatus zero, viewed from above, when negative. The net twist value is calculat

46、ed as half the difference between and . A negative value of or only indicates a net clockwise twist in the chain under test, viewed from above; it does not indicate a negative algebraic quantity. Examples of the calculation of the twist value are given in Annex A. Twist total value Figure 5 Measurem

47、ent of twist 1 max 1 6 6 +1 1 6 6 +1 5N 0,2 N m 1 2 = 1 2 2 = = 1 + 2ISO 9633:2001(E) 9 5.2.5 Acceptance criteria The values of and shall be within the following limits: where where and 6 Determination of lateral deviation 6.1 Visual detection of lateral deviation To visually detect any lateral devi

48、ation, suspend the chain by one end and observe the alignment of the links. 6.2 Method of determining lateral deviation 6.2.1 Apparatus The apparatus for measuring lateral deviation shall comprise a straightedge (see Figure 6) whose surfaces are ground to the dimensions specified in Table 2. For con

49、venience of handling, a straightedge for each size of chain may be incorporated into a holder (see Figure 7). 6.2.2 Test procedure 6.2.2.1 Place a sample chain comprising a minimum of 49 links in a horizontal plane with its axes horizontal and fix it at one of its ends. Apply a tensile force of at the other end (see Figure 8). 6.2.2.2 From the fixing point of the chain, slide the measuring straightedge inside the inner plates of the chain over the whole length