1、BRITISH STANDARD BS ISO 8018:2007 Tools for moulding Guide bushes, headed, and locating guide bushes, headed ICS 25.120.30 BS ISO 8018:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 February 2007 BSI 2007 ISBN 978 0 580 50193 7 Natio
2、nal foreword This British Standard was published by BSI. It is the UK implementation of ISO 8018:2007. It supersedes BS 7564-4:1992 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee MTE/12, Tools for pressing and moulding. A list of organizations repres
3、ented on MTE/12 can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued
4、 since publication Amd. No. Date Comments Reference number ISO 8018:2007(E)INTERNATIONAL STANDARD ISO 8018 Second edition 2007-02-01 Tools for moulding Guide bushes, headed, and locating guide bushes, headed Outillage de moulage Bagues de guidage, collerette et collerette avec plot de centrage BS IS
5、O 8018:2007ii iii 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 through ISO technical committees. Each member body interested in a sub
6、ject 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 Electrotechnical Commission (I
7、EC) 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 adopted by the technical commit
8、tees 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 patent rights. ISO shall not be
9、 held responsible for identifying any or all such patent rights. ISO 8018 was prepared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 8, Tools for pressing and moulding. This second edition cancels and replaces the first edition (ISO 8018:1985), of which it constitutes a minor revisi
10、on. In particular, the references given in Clause 2, which are not mentioned in the text, have been listed in a Bibliography, and the indication of surface textures has been updated in accordance with ISO 1302:2002. BS ISO 8018:2007 blank1 Tools for moulding Guide bushes, headed, and locating guide
11、bushes, headed 1 Scope This International Standard specifies the dimensions and tolerances, in millimetres, for headed guide bushes and headed locating guide bushes intended for use in moulds. 2 Dimensions 2.1 Guide bushes, headed Type A The dimensions of headed guide bushes of type A shall conform
12、to the indications of Figure 1 and Table 1. Surface roughness values in micrometres NOTE The sketch is an example only. aChamfer and a cylindrical entry over 3 mm. bR u 0,1S. Figure 1 Guide bushes, headed Type A BS ISO 8018:20072 Table 1 Dimensions of guide bushes, headed Type A D a12 16 20 25 32 40
13、 50 D 118 22 28 32 40 50 63 D 222 26 32 36 45 56 71 S 4 6 6 6 8 8 8 L 1L 16 20 25 16 20 25 16 20 25 16 20 25 20 25 32 40 50 32 32 32 32 40 50 32 40 50 32 40 50 32 40 50 63 80 100 63 63 63 80 80 63 80 80 63 80 100 63 80 100 80 100 125 160 200 100 100 100 125 100 100 125 a For use in exceptional cases
14、, for instance, to prevent incorrect assembly of the upper and lower plates of the mould in relation to each other, the following additional values for diameter D are recommended : 11, 15, 19, 24, 30, 38 and 48BS ISO 8018:20073 2.2 Locating guide bushes, headed Type B The dimensions of headed locati
15、ng guide bushes of type B shall conform to the indications of Figure 2 and Table 2. Surface roughness values in micrometres NOTE The sketch is an example only. aChamfer and a cylindrical entry over 3 mm. bR u 0,1S. Figure 2 Locating guide bushes, headed Type B BS ISO 8018:20074 Table 2 Dimensions of
16、 locating guide bushes, headed Type B D a12 16 20 25 32 40 50 D 118 22 28 32 40 50 63 D 222 26 32 36 45 56 71 S 4 6 6 6 8 8 8 L 1L 2L 20 25 32 16 20 25 20 25 32 25 32 25 32 25 32 40 50 60 32 40 50 32 32 32 32 40 40 40 40 40 40 40 50 50 71 90 112 63 80 100 40 50 40 50 63 40 63 63 50 63 63 80 100 132
17、170 210 125 160 200 63 63 80 80 80 80 100 100 125 100 100 125 a For use in exceptional cases, for instance, to prevent incorrect assembly of the upper and lower plates of the mould in relation to each other, the following additional values for diameter D are recommended : 11, 15, 19, 24, 30, 38 and
18、48.3 Designation A guide bush in accordance with this International Standard shall be designated by: a) “guide bush“; b) a reference to this International Standard; c) type of guide bush (A or B); d) its internal diameter (D); e) its length (L). EXAMPLE Guide bush ISO 8018 A 12 20 Guide bush ISO 801
19、8 B 12 20 BS ISO 8018:20075 Bibliography 1 ISO 1302:2002, Geometrical Product Specifications (GPS) Indication of surface texture in technical product documentation 2 ISO 4957:1999, Tool steels 3 ISO 6753-2:1998, Tools for pressing and moulding Machined plates Part 2: Machined plates for moulds 4 ISO
20、 8017, Tools for moulding Guide pillars, straight and shouldered, and locating guide pillars, shouldered BS ISO 8018:2007BS ISO 8018:2007 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It pr
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