1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationDD ISO/TS 128-71:2010T e c h n i c a l p r o d u c t documentation (TPD) General principles of presentationPart 71: Simplified representation for mechanical engineering drawingsD
2、D ISO/TS 128-71:2010 DRAFT FOR DEVELOPMENTNational forewordThis Draft for Development is the UK implementation of ISO/TS 128-71:2010.This publication is not to be regarded as a British Standard.It is being issued in the Draft for Development series of publications and is of a provisional nature. It
3、should be applied on this provisional basis, so that information and experience of its practical application can be obtained.Comments arising from the use of this Draft for Development are requested so that UK experience can be reported to the international organization responsible for its conversio
4、n to an international standard. A review of this publication will be initiated not later than 3 years after its publication by the international organization so that a decision can be taken on its status. Notification of the start of the review period will be made in an announcement in the appropria
5、te issue of Update Standards.According to the replies received by the end of the review period, the responsible BSI Committee will decide whether to support the conversion into an international Standard, to extend the life of the T e c h n i c a l S p e c i f i c a t i o n o r t o w i t h d r a w i
6、t . C o m m e n t s s h o u l d b e s e n t to the Secretary of the responsible BSI Technical Committee at British Standards House, 389 Chiswick High Road, London W4 4AL.The UK participation in its preparation was entrusted to Technical Committee TDW/4, Technical Product Realization.A list of organi
7、zations represented on this committee 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. BSI 2011ISBN 978 0 580 66009 2ICS 01.100.20Compliance with a British Standard
8、cannot confer immunity from legal obligations.This Draft for Development was published under the authority of the Standards Policy and Strategy Committee on 30 April 2011.Amendments issued since publicationDate T e x t a f f e c t e dDD ISO/TS 128-71:2010Reference numberISO/TS 128-71:2010(E)ISO 2010
9、TECHNICAL SPECIFICATION ISO/TS128-71First edition2010-09-01Technical product documentation (TPD) General principles of presentation Part 71: Simplified representation for mechanical engineering drawings Documentation technique de produits (TPD) Principes gnraux de reprsentation Partie 71: Reprsentat
10、ion simplifie applicable aux dessins industriels DD ISO/TS 128-71:2010ISO/TS 128-71:2010(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are
11、licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details
12、of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relat
13、ing to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2010 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 phot
14、ocopying and microfilm, without permission 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 Swi
15、tzerland ii ISO 2010 All rights reservedDD ISO/TS 128-71:2010ISO/TS 128-71:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv Introductionvi 1 Scope1 2 Terms and definitions .1 3 General principles and basic methods of simplified representation.1 3.1 Principles1 3.2 Basic methods .2 4
16、 Examples2 DD ISO/TS 128-71:2010ISO/TS 128-71:2010(E) iv ISO 2010 All rights reservedForeword 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 thr
17、ough 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 that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collabo
18、rates closely with the 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 Stand
19、ards. 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. In other circumstances, particularly when there is an urgent market
20、 requirement for such documents, a technical committee may decide to publish other types of document: an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in an ISO working group and is accepted for publication if it is approved by more than 50 % of the
21、 members of the parent committee casting a vote; an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting a vote. An ISO/PAS or ISO/TS is reviewed afte
22、r three years in order to decide whether it will be confirmed for a further three years, revised to become an International Standard, or withdrawn. If the ISO/PAS or ISO/TS is confirmed, it is reviewed again after a further three years, at which time it must either be transformed into an Internation
23、al Standard or be withdrawn. 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 identifying any or all such patent rights. ISO/TS 128-71 was prepared by Technical Committee ISO/TC 10, Technical p
24、roduct documentation, Subcommittee SC 6, Mechanical engineering documentation. ISO/TS 128 consists of the following parts, under the general title Technical product documentation (TPD) General principles of presentation: Part 1: Introduction and index Part 20: Basic conventions for lines Part 21: Pr
25、eparation 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 DD ISO/TS 128-71:2010ISO/TS 128-71:2010(E) ISO 2010 All
26、 rights reserved v Part 30: Basic 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 Part 71: Simplified r
27、epresentation for mechanical engineering drawings Technical Specification The presentation of shipbuilding drawings is to form the subject of a future part 15. DD ISO/TS 128-71:2010ISO/TS 128-71:2010(E) vi ISO 2010 All rights reservedIntroduction This part of ISO 128 has been established to specify
28、rules and guidance for the use of the simplified representation on mechanical engineering drawings. It is not the purpose of the simplified representation to present difficulties in understanding the drawing. When its use could present such difficulties, it is intended that a complete representation
29、 in accordance with the basic rules of ISO 128 be used. DD ISO/TS 128-71:2010TECHNICAL SPECIFICATION ISO/TS 128-71:2010(E) ISO 2010 All rights reserved 1Technical product documentation (TPD) General principles of presentation Part 71: Simplified representation for mechanical engineering drawings 1 S
30、cope This part of ISO 128 specifies general principles and basic methods for the application of the simplified representation on mechanical engineering drawings. The provisions of this part of ISO 128 are based on those of ISO 128-20, ISO 128-30, ISO 128-40, ISO 128-50, ISO 129-1 (Technical drawings
31、 Indication of dimensions and tolerances Part 1: General principles) and ISO 6411 (Technical drawings Simplified representation of centre holes). NOTE For the simplified representation of individual products, such as fastenings, springs, seals, gear wheels, racks, worms, worm gear-wheels, splint joi
32、nts and rolling bearings, see the relevant International Standards. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 complete representation representation drawn in accordance with the valid rules of projection for technical drawings 3.2 simpl
33、ified representation representation drawn in accordance with the valid rules of projection and on which individual elements of the product are not shown, provided this does not present difficulties in understanding the drawing 3 General principles and basic methods of simplified representation 3.1 P
34、rinciples Simplified representation a) shall not lead to misunderstanding or equivocation, b) while making drawings easy to read and draw, should also emphasize the whole effect, and c) while facilitating manual and computer drawing, should also consider the requirements of microcopy drawing. DD ISO
35、/TS 128-71:2010ISO/TS 128-71:2010(E) 2 ISO 2010 All rights reserved3.2 Basic methods The basic methods for the use of simplified representation are a) reducing the repeat structure drawing for identical components (see examples 7 to 10), b) omitting the views, sections or cuts which are not necessar
36、y (see example 4), and c) simplifying the elements of drawing when the structure is clearly expressed (see examples 1 to 6 and 11 to 15). 4 Examples For comparison purposes, the following examples of the application of the principles and methods are given in both their simplified and conventional/co
37、mplete representations. DD ISO/TS 128-71:2010ISO/TS 128-71:2010(E) ISO 2010 All rights reserved 3Example No. Simplified representation Conventional representation Description 1 Onlythe productsortheirfeaturesthat are located inthesectionalplanebeyond the coiled spring need be shown. 2 It ispermitted
38、 that the featuresshown onadetail sectionnotbe depicted on the principalview.DD ISO/TS 128-71:2010ISO/TS 128-71:2010(E) 4 ISO 2010 All rights reservedExample No. Simplified representation Conventional representation Description 3 Simple sectionsarepermittednot tobehatched. DD ISO/TS 128-71:2010ISO/T
39、S 128-71:2010(E) ISO 2010 All rights reserved 5Example No. Simplified representation Conventional representation Description 4 A localsection ispermitted tobe made on the principalcut (section)view,provided the localsection isidentified. 5 Projections for circles orcirculararcswhose angle ofinclinat
40、ion withtheprojectionplane islessthanequal to30maybesubstituted bycirclesorcirculararcs.DD ISO/TS 128-71:2010ISO/TS 128-71:2010(E) 6 ISO 2010 All rights reservedExample No. Simplified representation Conventional representation Description 6 The easement curvesofthebodiesofrevolutionare permitted tob
41、esubstituted bycircumferences. 7 In a part where there isa certain numberofidentical,evenlyspaced features(teeth,grooves, etc.),it ispermitted todepictonlyoneortwo ofthese featureson the simplified view,withtheremainderbeing depicted usinganarrowlineand with theirtotal number(s)indicated. DD ISO/TS
42、128-71:2010ISO/TS 128-71:2010(E) ISO 2010 All rights reserved 7Example No. Simplified representation Conventional representation Description 8 Where there are groupsofrepeated featuresontheproduct,onlyone ofthe groupsneed be shown in fullonthesimplified view; the othersmaybe depicted usingcentreline
43、s, with theirtotalnumberindicated. 9 Where thecomponents(partsand assemblies)are located ina regularpattern onan assemblydrawing,onlyoneofthe groupsneed be shownin thesimplifiedview, whilethe arrangement ofothercomponentsmaybedepicted usingcentrelines, withtheirtotal numberindicated. DD ISO/TS 128-7
44、1:2010ISO/TS 128-71:2010(E) 8 ISO 2010 All rights reservedExample No. Simplified representation Conventional representation Description 10 When there isa groupof identical componentsonanassemblydrawing,onlyonegroup need bedepicted, withappropriate indication ofthe rest. 11 Where thefeaturesofapart a
45、re representedin fullon oneview,theymaybe depictedin simplified formon relatedviews.DD ISO/TS 128-71:2010ISO/TS 128-71:2010(E) ISO 2010 All rights reserved 9Example No. Simplified representation Conventional representation Description 12 The formofa pipe maybe depicted witha centre line withdetail a
46、t each end. 13 Where a componentorcomponentsofa productareshown in complete formin oneview, it ispermitted to depictthemin simplified formin otherviews.DD ISO/TS 128-71:2010ISO/TS 128-71:2010(E) 10 ISO 2010 All rights reservedExample No. Simplified representation Conventional representation Descript
47、ion 14 Standard and otherwidely used partsmaybe shown inoutline. 15 In an assemblydrawing,chamfers, ribs, knurls, draft angles,etc.,ofthe partsmaybe omitted. DD ISO/TS 128-71:2010DD ISO/TS 128-71:2010ISO/TS 128-71:2010(E) ICS 01.100.20 Price based on 10 pages ISO 2010 All rights reserved This page d
48、eliberately left blankBSI is the independent national body responsible for preparing British Standardsand other standards-related publications, information and services. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter.British Standar
49、ds Institution (BSI)raising standards worldwideBSI Group Headquarters389 Chiswick High Road London W4 4AL UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 Standards are updated by amendment or revision. Users of British Stan-dards 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 serv-ices. We would be grateful if anyone finding a
