《BS-ISO-128-50-2001.pdf》由会员分享，可在线阅读，更多相关《BS-ISO-128-50-2001.pdf（14页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS ISO 128-50:2001 Technical drawings General principles of presentation Part 50: Basic conventions for representing areas on cuts and sections ICS 01.100.01 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25
2、 12:58:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 128-50:2001 This British Standard, having been prepared under the direction of the Consumer Products and Services Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 July 2001 BSI 07-20
3、01 ISBN 0 580 37721 0 National foreword This British Standard reproduces verbatim ISO 128-50:2001 and implements it as the UK national standard. It partially supersedes BS ISO 128:1982 which will be withdrawn on completion of the overall revision process for ISO 128:1982. The International Standard,
4、 implemented by this British Standard, contains some presentational defects particularly relating to the figures, about which the UK has previously expressed some concerns but not withstanding this, the standard progressed to publication without correction of those defects. It is stressed that these
5、 are purely presentational and relate to such things as lettering heights and configuration of arrow heads, in the figures. The technical content of the standard is, however, believed to be correct and it has therefore been decided to implement the standard, unmodified, with the warning that the fig
6、ures should be considered as illustrations only and that the text be used as the source of definition. The UK participation in its preparation was entrusted to Technical Committee TDW/4, Engineering drawing, metrology, precision measurement and all related documentation, which has the responsibility
7、 to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International
8、 Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. 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
9、Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and Eu
10、ropean developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii and iii, a blank page, pages 1 to 6, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates whe
11、n the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 12:58:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 128-50:2001(E) INTERNATIONAL STANDARD ISO 128-50 First edition 2001-04-15 Technica
12、l drawings General principles of presentation Part 50: Basic conventions for representing areas on cuts and sections Dessins techniques Principes gnraux de reprsentation Partie 50: Conventions de base pour la reprsentation des surfaces sur des coupes et des sections Licensed Copy: sheffieldun sheffi
13、eldun, na, Sat Nov 25 12:58:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 128-50:2001(E) ii Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 12:58:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 128-50:2001(E) iii Foreword ISO (the International Organization for Standardization) is a wor
14、ldwide 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 committee has been established has the right to be represented on
15、 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 electrotechnical standardization. International Standards are drafted
16、in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International 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. Att
17、ention is drawn to the possibility that some of the elements of this part of ISO 128 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 128-50 was prepared by Technical Committee ISO/TC 10, Technical produc
18、t documentation, Subcommittee SC 1, Basic conventions. This first edition of ISO 128-50 is based on ISO 128:1982, subclauses 4.1 to 4.3 of which it cancels and replaces. ISO 128 consists of the following parts, under the general title Technical drawings General principles of presentation: ?Part 20:
19、Basic convention for lines ?Part 21: Preparation of lines by CAD systems ?Part 22: Basic conventions and applications for leader lines and reference lines ?Part 23: Lines on construction drawings ?Part 24: Lines on mechanical engineering drawings ?Part 25: Lines on shipbuilding drawings ?Part 30: Ba
20、sic conventions for views ?Part 34: Views on mechanical engineering drawings ?Part 40: Basic conventions for cuts and sections ?Part 44: Sections on mechanical engineering drawings ?Part 50: Basic conventions for representing areas on cuts and sections The following part is under preparation: ?Part
21、1: Introduction and index Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 12:58:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 12:58:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARDISO 128-50:2001(E) 1 Technical drawing
22、s General principles of presentation Part 50: Basic conventions for representing areas on cuts and sections 1Scope This part of ISO 128 specifies general principles for representing areas on cuts and sections on technical drawings (mechanical, electrical, architectural, civil-engineering etc.) follo
23、wing the orthographic projection methods specified in ISO 5456-2. Attention has also been given to the requirements of reproduction, including microcopying in accordance with ISO 6428. NOTEThe basic rules for cuts and sections are given in ISO 128-401. 2Normative references The following normative d
24、ocuments contain provisions which, through reference in this text, constitute provisions of this part of ISO 128. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 128 are encouraged to in
25、vestigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 128-20, Techn
26、ical drawings General principles of presentation Part 20: Basic conventions for lines. ISO 128-24:1999, Technical drawings General principles of presentation Part 24: Lines on mechanical engineering drawings. ISO 5456-2, Technical drawings Projection methods Part 2: Orthographic representations. ISO
27、 6428, Technical drawings Requirements for microcopying. ISO 10209-1, Technical product documentation Vocabulary Part 1: Terms relating to technical drawings: general and types of drawings. ISO 10209-2, Technical product documentation Vocabulary Part 2: Terms relating to projection methods. 3Terms a
28、nd definitions For the purposes of this part of ISO 128, the terms and definitions given in ISO 10209-1 and ISO 10209-2 apply. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 12:58:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 128-50:2001(E) 2 4General This part of ISO 128 specifies six m
29、ethods for the representation of areas on cuts and sections. These consist of indication ?by hatching (see clause 5), ?by shading or toning (see clause 6), ?by extra-wide continuous outlines (see clause 7), ?of thin sections (see clause 8), ?of thin adjacent sections (see clause 9), and ?of special
30、materials (see clause 10). Allowance shall be made for the means of reproduction used, in accordance with ISO 6428. 5Hatching Hatching shall be done with the narrow continuous lines of type 01.1.5 specified in ISO 128-24:1999 and at a convenient angle (preferably 45? to the principal outlines or lin
31、es of symmetry of cuts or sections (see Figure 1). Figure 1 Hatching of areas of cuts or sections Examples Separate areas of a cut or section of the same component shall be hatched in an identical manner. The hatching of adjacent components shall be carried out using the specified lines running in d
32、ifferent directions or differently spaced (see Figure 2). Figure 2 Hatching of adjacent areas Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 12:58:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 128-50:2001(E) 3 Spacing between the hatching lines should be chosen in proportion to the size
33、of the hatched areas, provided this is in accordance with the requirements for minimum spacing given in ISO 128-20. Where cuts or sections of the same part in parallel are shown side by side, the hatching shall be identical (see Figure 3), but may be offset along the dividing line between the cuts o
34、r sections for greater clarity. Figure 3 Hatching of an area parallel cuts or sections In the case of a large area, the hatching may be limited to a zone that follows the contour of the area (see Figure 4). Figure 4 Hatched contour of large area Hatching shall be interrupted for inscriptions inside
35、an area (see Figure 5). Figure 5 Hatching interrupted by inscription Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 12:58:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 128-50:2001(E) 4 6Shading or toning Shading may consist of a pattern of dots or an overall toning of area (see Figure 6)
36、. Figure 6 Shading using dots and toning Spacing between dots should be chosen in proportion to the size of a shaded area. In the case of a large area, the shading may be limited to a zone that follows the areas contour (Figure 4). Shading or toning shall be interrupted for inscriptions inside an ar
37、ea (Figure 5). 7Extra-wide continuous outlines Areas of cuts and sections may be emphasized by the extra-wide continuous line specified in ISO 128-20 (see Figure 7). Figure 7 Extra-wide continuous outline for emphasis 8Thin sections Thin sections may be shown entirely black (see Figure 8). This meth
38、od shall represent true geometry. Figure 8 Thin sections Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 12:58:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 128-50:2001(E) 5 9Thin adjacent sections Solid sections may be shown entirely black. Aspace of not less than 0,7 mm shall be left be
39、tween adjacent sections of this type. See Figure 9. This method does not represent true geometry. Figure 9 Thin adjacent sections 10 Specific materials Different types of special representation can be used to indicate specific materials. If a special representation is used, its signification shall b
40、e clearly defined on the drawing (e.g. by a legend, or by reference to appropriate standards). Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 12:58:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 128-50:2001(E) 6 Bibliography 1ISO 128-40, Technical drawings General principles of presentati
41、on Part 40: Basic conventions for cuts and sections. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 12:58:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 25 12:58:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 128-50:2001 BSI 389 Chiswi
42、ck High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated b
43、y amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Stan
44、dard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest
45、editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: 020 8996 9001. Fax: 020 8996 7001. Standards are also available from the BSI website at http:/www.bsi-. In response to orders for international
46、standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical H
47、elp to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel: 020 8996 7111. Fax: 020 8996 7048. Subscribing members of BSI are kept up to date with standards developments and receive
48、 substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel: 020 8996 7002. Fax: 020 8996 7001. Further information about BSI is available on the BSI website at http:/www.bsi-. Copyright Copyright subsists in all BSI publi
49、cations. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbol