1、BRITISH STANDARD BS ISO 9656:2004 Pliers and nippers for electronics Test methods ICS 25.140.30 BS ISO 9656:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 10 December 2004 BSI 10 December 2004 ISBN 0 580 45033 3 National foreword This B
2、ritish Standard reproduces verbatim ISO 9656:2004 and implements it as the UK national standard. It supersedes BS 7330-3:1990 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee MTE/15, Hand tools, to Subcommittee MTE/15/13, Assembly tools for screws and
3、nuts, pliers and nippers, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Cata
4、logue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its co
5、rrect 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 the interpretation, or proposals for change, and keep the UK interests i
6、nformed; 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 and iii, a blank page, pages 1 to 6, an inside back cover and a back cover. The BSI copyright no
7、tice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Reference number ISO 9656:2004(E)INTERNATIONAL STANDARD ISO 9656 Second edition 2004-09-15 Pliers and nippers for electronics Test methods Pinces pour llectronique
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11、h serddaig sleb nevwo. ii BSISO9656:2004 iiiForeword 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 through ISO technical committees. Each membe
12、r 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 collaborates closely with the International Elec
13、trotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopt
14、ed by the technical committees are circulated 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 document may be the subject of paten
15、t rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 9656 was prepared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 10, Assembly tools for screws and nuts, pliers and nippers. This second edition cancels and replaces the first edition (ISO
16、9656:1989) which has been technically revised. BSISO9656:2004blankINTENRATIONAL TSANDADR IS:6569 O4002(E)1Pliers and nippers for electronics Test methods 1 Scope This International Standard specifies the methods of test for checking the correct functioning of pliers and nippers for electronics. The
17、test parameters have been specified on the basis of the functional uses of the tools. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of
18、the referenced document (including any amendments) applies. ISO 9654, Pliers and nippers for electronics Single-purpose nippers Cutting nippers IEC 60317-0-1, Specifications for particular types of winding wires Part 0-1: General requirements Enamelled round copper wire 3 Wire cutting test 3.1 Gener
19、al Cutting nippers for electronics shall cut Cu ETP wire in accordance with IEC 60317-0-1. The range of diameters of the test wire are specified in ISO 9654. Upon completion of the test, the cutting edges shall show neither visible indentation nor distortion which could affect the cutting performanc
20、e of the tool. Nor shall the tool show any damage that could affect its further use. 3.2 Diagonal and oblique cutting nippers 3.2.1 Place a straight length of the minimum diameter test wire on a hard, flat, horizontal surface. The wire shall be cut using the point of the jaws with the cutting edge v
21、ertical, solely by the application of manual force on the handles. 3.2.2 Place a length of approximately 25 mm of the minimum diameter test wire at any position along the top two-thirds of the cutting edges, measured from the point. The wire shall be cut solely by the application of manual force on
22、the handles. 3.2.3 Diagonal and oblique cutting nippers shall cut the maximum diameter test wire at any position along the cutting edges. BSISO9656:20042 3.3 All other cutting nippers for electronics Place a length of maximum 25 mm of the minimum diameter test wire at any position along the cutting
23、edges. The wire shall be cut solely by the application of manual force on the handles. The same requirement applies also when using the maximum diameter test wire. 4 Torsion test for round nose pliers 4.1 Test block The jaws shall be inserted into two 90 V notches in the test block such that the poi
24、nts of the jaws are 3 mm apart and the jaws are clamped over a length of 2 mm from the point (see Figure 1). The test block shall have a hardness of between 40 HRC and 45 HRC. 4.2 Procedure With the jaws clamped in the test block, and the handles clamped to resist the turning moment, apply sufficien
25、t torque, first in a clockwise direction and then in an anti-clockwise direction, to rotate the jaws relative to the handles through the angle specified in Table 1 appropriate to the type of pliers under test. Upon completion of the test, the points of the jaws shall show no angular misalignment and
26、 the tool shall show no damage that could affect its further use. BSISO9656:2004 3Dimensions in millimetres Key 1 test piece Figure 1 Example for torsion test for round nose pliers Table 1 Torsion values for round nose pliers Nominal length l Length of jaws mm Twist angle 3 112 Short jaws 125 20 125
27、 Long jaws 140 25 BSISO9656:20044 5 Load test for flat nose and snipe nose pliers 5.1 Test piece Pliers shall grip a 3 mm 0,1 mm thick test piece over a length of 2 mm 0,5 mm measured from the point (see Figure 2). The hardness of the test piece shall be between 30 HRC and 40 HRC. Dimensions in mill
28、imetres Key 1 test piece al 3is the length from the point of the jaws to the centre of the joint rivet. The test piece shall not be allowed to slip from the jaws. bLength of handle. cl 1is equal to 0,8 times the length of the handle. Figure 2 Example for load test for snip nose pliers and flat nose
29、pliers 5.2 Procedure Apply the load F 1(see Figure 2), calculated using the formula given in Tables 2 and 3, appropriate to the type of pliers under test. Upon completion of the test, the tool shall show no damage that could affect its further use. BSISO9656:2004 5Table 2 Flat nose pliers, load test
30、 Load test Nominal length l F F 1Length of jaws mm N 112 Short jaws 125 500 125 Long jaws 140 400 2 1 1 F l F l = Table 3 Snipe nose pliers, load test Load test Nominal length l F F 1Length of jaws mm N 112 Short jaws 125 400 125 Long jaws 140 250 2 1 1 F l F l = 6 Hardness test of jaws The hardness
31、 shall be measured on the gripping surface or on an adjacent face at a distance of not more than 1 mm from the gripping surface. On cutting nippers, the hardness of the cutting edges shall be measured not more than 1 mm from the line of the edges. BSISO9656:20046 Bibliography 1 ISO 6508-1, Metallic
32、materials Rockwell hardness test Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T) 2 ISO 8979, Pliers and nippers for electronics Nomenclature 3 ISO 9657, Pliers and nippers for electronics General technical requirements BSISO9656:2004blankBS ISO 9656:2004 BSI 389 Chiswick High Road Londo
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