1、raising standards worldwide NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BSI Standards Publication BS ISO 8694:2011 Tools for moulding Shouldered ejector pinsBS ISO 8694:2011 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO 8694:2011.
2、 It supersedes BS ISO 8694:1998 which is withdrawn.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 represented on this committee can be obtained on request to its secretary. This publication does not purpo
3、rt to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011 ISBN 978 0 580 73922 4 ICS 25.120.30 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the
4、Standards Policy and Strategy Committee on 30 September 2011. Amendments issued since publication Date Text affectedBS ISO 8694:2011Reference number ISO 8694:2011(E) ISO 2011INTERNATIONAL STANDARD ISO 8694 Third edition 2011-09-15 Tools for moulding Shouldered ejector pins Outillage de moulage jecte
5、urs pauls BS ISO 8694:2011 ISO 8694:2011(E) COPYRIGHT PROTECTED DOCUMENT ISO 2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission
6、 in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2011 All rights reservedBS
7、 ISO 8694:2011 ISO 8694:2011(E) ISO 2011 All rights reserved 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 co
8、mmittees. 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 collaborates closely with th
9、e 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 2. The main task of technical committees is to prepare International Standards. Draft Internati
10、onal Standards adopted 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
11、the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 8694 was prepared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 8, Tools for pressing and moulding. This third edition cancels and replaces the second edition (ISO 8694
12、:1998), of which it constitutes a minor revision. In particular, the indication of surface textures has been updated in accordance with ISO 1302:2002. BS ISO 8694:2011BS ISO 8694:2011 INTERNATIONAL STANDARD ISO 8694:2011(E) ISO 2011 All rights reserved 1Tools for moulding Shouldered ejector pins 1 S
13、cope This International Standard specifies the dimensions and tolerances, in millimetres, of shouldered ejector pins with cylindrical head which are used in compression and injection moulds and in die casting dies. It also gives material guidelines and hardness requirements, and specifies the design
14、ation of shouldered ejector pins. Ejector pins with cylindrical head are specified in ISO 6751; flat ejector pins are specified in ISO 8693. 2 Dimensions The dimensions of shouldered ejector pins shall be in accordance with the indications of Figure 1 and Table 1. Surface roughness values in microme
15、tres Key 1 edges without burrs aRa 0,8 for hot worked steel. Ra 0,4 for alloyed cold worked steel. bThe concentricity tolerance of 0,05 mm is measured over a maximum distance of 10 mm immediately after the end of the radius joining D 1and D 2 . cProviding the ejector pin with an alternative surface
16、roughness or a small variation on the diameter, D 2 , over a certain length is permitted. Figure 1 Shouldered ejector pin BS ISO 8694:2011 ISO 8694:2011(E) 2 ISO 2011 All rights reservedTable 1 Dimensions of shouldered ejector pins Dimensions in millimetres D 1 g6 D 2D 3L 2 0 H R 100 125 160 200 250
17、 L 11 2 Standard size Oversize h11 0 0,2 50 50 63 80 100 0 0,05 0,2 0 0,8 2 4 X X X 2 0,2 0,9 X X X 1 X X X 1,2 X X X 1,5 3 6 X X X X 3 0,3 1,6 X X X X 2 X X X X X 2,2 X X X X X 2,5 X X X X X 3 Material and hardness Shouldered ejector pins shall be made of hot worked steel or alloyed cold worked ste
18、el. The hardness of the shaft and head shall conform to the indication of Table 2. Table 2 Material and hardness Material Hardness aShaft Head Hot worked steel Min. 1 400 MPa core strength min. 950 HV 0,3 (45 5) HRC hot-forged Alloyed cold worked steel (60 2) HRC aThe point at which hardness is meas
19、ured is left to the manufacturers discretion. BS ISO 8694:2011 ISO 8694:2011(E) ISO 2011 All rights reserved 34 Designation Shouldered ejector pins according to this International Standard shall be designated by: a) “shouldered ejector pin”; b) reference to this International Standard, i.e. ISO 8694
20、; c) ejector pin diameter, D 1 , in millimetres; d) ejector pin length, L, in millimetres; e) ejector pin material. EXAMPLE The designation for a shouldered ejector pin of diameter D 1= 0,8 mm, of length L = 100 mm and of hot worked steel is as follows: Shouldered ejector pin ISO 8694 - 0,8 - 100 -
21、Hot worked steel BS ISO 8694:2011 ISO 8694:2011(E) 4 ISO 2011 All rights reservedBibliography 1 ISO 1302:2002, Geometrical Product Specifications (GPS) Indication of surface texture in technical product documentation 2 ISO 6751, Tools for moulding Ejector pins with cylindrical head 3 ISO 8693, Tools
22、 for moulding Flat ejector pins BS ISO 8694:2011BS ISO 8694:2011 ISO 8694:2011(E) ICS 25.120.30 Price based on 4 pages ISO 2011 All rights reserved This page deliberately left blankBSI is the independent national body responsible for preparing British Standards and other standards-related publicatio
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