BS-7568-8-1992 ISO-8977-1987.pdf
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1、BRITISH STANDARD BS 7568-8: 1992 ISO 8977:1987 Press tools Part 8: Round matrixes Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:35:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7568-8:1992 This British Standard, having been prepared under the direction o
2、f the Machine, Engineers and Hand Tools Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 1 May 1992 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference MTE/12 Draft for comment 86/70914 DC ISBN
3、 0 580 20774 9 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Machine, Engineers and Hand Tools Standards Policy Committee (MTE/-) to Technical Committee MTE/12, upon which the following bodies were represented: Advanced Manufacturing T
4、echnology Research Institute Amalgamated Engineering Union Gauge and Tool Makers Association Coopted member Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:35:14 GMT+00:00 2006, Uncontrolled Copy, (c) B
5、SI BS 7568-8:1992 BSI 12-1999i Contents Page Committees responsibleInside front cover National forewordii 1Scope and field of application1 2References1 3Dimensions1 4Material and hardness1 5Designation1 Figure2 Table2 Publication(s) referred toInside back cover Licensed Copy: London South Bank Unive
6、rsity, London South Bank University, Fri Dec 08 11:35:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7568-8:1992 ii BSI 12-1999 National foreword This Part of BS 7568 has been prepared under the direction of the Machine, Engineers and Hand Tools Standards Policy Committee. It is identical with ISO
7、 8977:1987 “Tools for pressing Round matrixes”, prepared by Technical Committee ISO/TC29, Small tools, and published by the International Organization for Standardization (ISO). The Technical Committee has reviewed the provisions of ISO 4957:1980 to which normative reference is made in the text, and
8、 has decided that they are acceptable for use in conjunction with this standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself
9、confer immunity from legal obligations. Cross-references International StandardCorresponding British Standard ISO 6508:1986BS 891:1989 Methods for hardness test (Rockwell method) and for verification of hardness testing machines (Rockwell method) (Technically equivalent) Summary of pages This docume
10、nt comprises a front cover, an inside front cover, pages i and ii, pages 1 and 2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Cop
11、y: London South Bank University, London South Bank University, Fri Dec 08 11:35:14 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7568-8:1992 BSI 12-19991 1 Scope and field of application This International Standard lays down the basic dimensions and tolerances in millimetres for round matrixes in th
12、e outside diameter range of 5 to 50 mm. It gives examples of materials and hardness, and specifies a designation of matrixes which meet the requirements of this International Standard. The main use of matrixes defined in this International Standard is for punching holes in steel sheet. They may also
13、 be used for punching holes in other materials. 2 References ISO 4957, Tool steels. ISO 6508, Metallic materials Hardness test Rockwell test (scales A B C D E F G H K). 3 Dimensions See the Figure and the Table. 4 Material and hardness The material is left to the manufacturers discretion. The follow
14、ing hardness values are given as examples: a) Tool steel with 5 to 12 % Cr: 62 2 HRC b) High-speed steel: 64 2 HRC 5 Designation Round matrixes in accordance with this International Standard shall be designated by a) “Round matrix”; b) reference to this International Standard; c) the type of matrix
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