1、BRITISH STANDARD BS ISO 9181:2007 Tools for pressing Round punches with 60 conical head and reduced shank ICS 25.120.10 BS ISO 9181:2007 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 50192 0 National
2、 foreword This British Standard was published by BSI. It is the UK implementation of ISO 9181:2007. It supersedes BS 7568-10:1992 which is withdrawn.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 represen
3、ted 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 s
4、ince publication Amd. No. Date Comments Reference number ISO 9181:2007(E)INTERNATIONAL STANDARD ISO 9181 Second edition 2007-02-01 Tools for pressing Round punches with 60 conical head and reduced shank Outillage de presse Poinons ronds tte conique 60 et corps paul BS ISO 9181:2007ii iii Foreword IS
5、O (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 subject for which a technical co
6、mmittee 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 (IEC) on all matters of electro
7、technical 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 committees are circulated to the me
8、mber 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 held responsible for identif
9、ying any or all such patent rights. ISO 9181 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 9181:1990), of which it constitutes a minor revision. In particular, the indica
10、tion of surface textures has been updated in accordance with ISO 1302:2002. BS ISO 9181:2007blank1 Tools for pressing Round punches with 60 conical head and reduced shank 1 Scope This International Standard specifies the dimensions and tolerances, in millimetres, for round punches with a 60 conical
11、head and reduced shank, having shank diameters D 1of 2 mm or 3 mm. It gives examples of materials and hardness, and specifies the designation of punches which meet the requirements of this International Standard. The main use of punches defined in this International Standard is for punching holes in
12、 steel sheet. They may also be used for punching holes in other materials. 2 Dimensions The dimensions of round punches with 60 conical head and reduced shank shall conform to the indications of Figure 1 and Table 1. 3 Material and corresponding hardness The material is left to the manufacturers dis
13、cretion. The following hardness values are given as examples: a) tool steel with 12 % Cr: point: (62 2) HRC head: (45 5) HRC b) high-speed steel: point: (64 2) HRC head: (50 5) HRC 4 Designation A round punch with 60 conical head and reduced shank in accordance with this International Standard shall
14、 be designated by: a) “round punch with conical head“; b) a reference to this International Standard, i.e. ISO 9181; c) its shank diameter, D 1 ; BS ISO 9181:20072 d) its point diameter, D 3 ; e) its total length, l; EXAMPLE The designation for a round punch with 60 conical head and reduced shank, o
15、f shank diameter D 1= 2 mm, point diameter D 3= 0,5 mm and total length l = 71 mm is as follows: Round punch with conical head ISO 9181 2 0,5 71 Surface roughness values in micrometres aRadius. Figure 1 Round punches with 60 conical head and reduced shank Table 1 Dimensions of round punches with 60
16、conical head and reduced shank D 1D 3D 2l h6 j6 0,5 0 +71 80 2 3 0,5 u D 3u 1,6 1,4 u D 3u 2,9 3 4,5 BS ISO 9181:20073 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 6508:2005
17、(all parts), Metallic materials Rockwell hardness test 4 ISO 6752: 1) , Tools for pressing Round punches with 60 conical head and straight shank 5 ISO 8695:1987, Tools for pressing Punches Nomenclature and terminology 1) To be publisched. (Revision of ISO 6752:1984) BS ISO 9181:2007BS ISO 9181:2007
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