BS-7568-24-1992 ISO-9448-8-1991.pdf
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1、BRITISH STANDARD BS 7568-24: 1992 ISO 9448-8: 1991 Press tools Part 24: Guide bushes Form G, gliding bushes, stepped, type 1 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:39:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7568-24:1992 This British Standard
2、, having been prepared under the direction of the Machine, Engineers and Hand Tools Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 August 1992 BSI 02-2000 The following BSI references relate to the work on this standard: Committee ref
3、erence MTE/12 Draft for comment 89/79324 DC ISBN 0 580 20958 X 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 b
4、odies were represented: Advanced Manufacturing Technology 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 1
5、1:39:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7568-24:1992 BSI 02-2000i Contents Page Committees responsibleInside front cover National forewordii 1Scope1 2Dimensions1 3Material and corresponding hardness1 4Designation1 Annex A (informative) BibliographyInside back cover Figure 1 Guide bush1
6、 Table 1 Preferred dimensions2 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 11:39:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7568-24:1992 ii BSI 02-2000 National foreword This Part of BS 7568 has been prepared under the direction of the Machine, Enginee
7、rs and Hand Tools Standards Policy Committee. It is identical with ISO 9448-8:1991, Tools for pressing Guide bushes Part 8: Form G, gliding bushes, stepped, type 1, prepared by Technical Committee ISO/TC29, Small tools, and published by the International Organization for Standardization (ISO). A Bri
8、tish 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 confer immunity from legal obligations. Summary of pages This document comprises a fro
9、nt 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 Copy: London South Ba
10、nk University, London South Bank University, Fri Dec 08 11:39:22 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 7568-24:1992 BSI 02-20001 1 Scope This part of ISO 9448 specifies the main dimensions and tolerances, in millimetres, of guide bushes of form G, stepped gliding bushes, type 1, intended for
11、 use in press tools and to be mounted in the clamp plate with interference fit over a certain length. The remaining portion of the length ensures the guiding. These bushes are provided with a clearance for lubrication. It gives guidance on the materials, and specifies the hardness and the designatio
12、n of bushes in accordance with this part of ISO 9448. 2 Dimensions See Figure 1 and Table 1. Details not stated such as chamfers, radii, lubrication grooves, etc., are left to the manufacturers discretion. 3 Material and corresponding hardness The material is left to the manufacturers discretion and
13、 the hardness shall be 60HRC. 4 Designation A guide bush in accordance with this part of ISO 9448 shall be designated by a) “Guide bush”; b) a reference to this part of ISO 9448; c) its form; d) its guiding diameter, D1, in millimetres; e) its length, l1, in millimetres. EXAMPLE A guide bush of form
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