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1、BRITISH STANDARD BS EN ISO 8062-3:2007 Geometrical product specifications (GPS) Dimensional and geometrical tolerances for moulded parts Part 3: General dimensional and geometrical tolerances and machining allowances for castings The European Standard EN ISO 8062-3:2007 has the status of a British S
2、tandard ICS 01.040.17; 01.040.77; 17.040.10; 77.140.80 ? Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:12:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN ISO 8062-3:2007 This British Standard was published under the authority of the Standards Policy and
3、 Strategy Committee on 31 October 2007 BSI 2007 ISBN 978 0 580 54899 4 National foreword This British Standard is the UK implementation of EN ISO 8062-3:2007. Together with BS EN ISO 8062-1:2007 and DD ISO TS 8062-2 (when published), it supersedes BS 6615:1996 (ISO 8062:1994). ISO/DTS 8062-2, Dimens
4、ional and geometrical tolerances for moulded parts Part 2: Rules is currently in development and will complete the set of ISO 8062 documents when it is published as a Technical Specification. The UK participation in its preparation was entrusted to Technical Committee TDW/4, Technical product realiz
5、ation (TPR). A list of organizations 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. Compliance with a British Standard cannot confer
6、 immunity from legal obligations. Amendments issued since publication Amd. No. DateComments Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:12:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8062-3 June 2
7、007 ICS 17.040.10 English Version Geometrical Product Specifications (GPS) - Dimensional and geometrical tolerances for moulded parts - Part 3: General dimensional and geometrical tolerances and machining allowances for castings (ISO 8062-3:2007) Spcification gomtrique des produits (GPS) - Tolrances
8、 dimensionnelles et gomtriques des pices moules - Partie 3: Tolrances dimensionnelles et gomtriques gnrales et surpaisseurs dusinage pour les pices moules (ISO 8062-3:2007) Geometrische Produktspezifikation (GPS) - Ma-, Form- und Lagetoleranzen fr Formteile - Teil 3: Allgemeine Ma-, Form- und Lageto
9、leranzen und Bearbeitungszugaben fr Gussstcke (ISO 8062-3:2007) This European Standard was approved by CEN on 25 February 2007. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard
10、 without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other lan
11、guage made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finl
12、and, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES K
13、OMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8062-3:2007: E Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 0
14、7:12:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Foreword This document (EN ISO 8062-3:2007) has been prepared by Technical Committee ISO/TC 213 “Dimensional and geometrical product specifications and verification“ in collaboration with Technical Committee CEN/TC 190 “Foundry technology“, the secr
15、etariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2007, and conflicting national standards shall be withdrawn at the latest by December 2007. According to t
16、he CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithua
17、nia, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 8062-3:2007 has been approved by CEN as EN ISO 8062-3:2007 without any modifications. EN ISO 8062-3:2007 Licensed Copy: London
18、 South Bank University, London South Bank University, Fri Nov 16 07:12:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Reference number ISO 8062-3:2007(E) INTERNATIONAL STANDARD ISO 8062-3 First edition 2007-06-01 Geometrical product specifications (GPS) Dimensional and geometrical tolerances for moul
19、ded parts Part 3: General dimensional and geometrical tolerances and machining allowances for castings Spcification gomtrique des produits (GPS) Tolrances dimensionnelles et gomtriques des pices moules Partie 3: Tolrances dimensionnelles et gomtriques gnrales et surpaisseurs dusinage pour les pices
20、moules EN ISO 8062-3:2007 Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:12:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ii Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:12:10 GMT+00:00 2007, Uncontrolled Copy, (c)
21、 BSI iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 2 4 Abbreviated terms 2 5 Tolerance grades 3 5.1 General. 3 5.2 Dimensional casting tolerance grades (DCTG). 3 5.3 Geometrical casting tolerance grades (GCTG) 4 6 Surface mismatch (SMI).
22、7 7 Wall thickness. 7 8 Required machining allowances (RMA) . 7 8.1 General. 7 8.2 Required machining allowance grades (RMAG) 8 9 Indication on drawings. 8 9.1 Indication of general dimensional casting tolerances 8 9.2 Indication of required machining allowances 9 9.3 Indication of geometrical casti
23、ng tolerances 9 10 Rejection 10 Annex A (informative) Casting tolerances and geometrical tolerances. 11 Annex B (informative) Required machining allowance grades (RMAG). 14 Annex C (informative) Concept of general tolerancing of characteristics. 15 Annex D (informative) Datums for general geometrica
24、l tolerances 17 Annex E (informative) Application of general geometrical tolerances for castings . 21 Annex F (informative) Relation to the GPS matrix model 29 Bibliography. 30 EN ISO 8062-3:2007 Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:12:10 GMT+00:00
25、 2007, Uncontrolled Copy, (c) BSI iv Foreword 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 through ISO technical committees. Each member body
26、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 collaborates closely with the International Electrotech
27、nical 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 Standards. Draft International Standards adopted by t
28、he 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. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent right
29、s. ISO shall not be held responsible for identifying any or all such patent rights. ISO 8062-3 was prepared by Technical Committee ISO/TC 213, Dimensional and geometrical product specifications and verification. This first edition of ISO 8062-3, together with ISO 8062-1 and ISO/TS 8062-2, cancels an
30、d replaces ISO 8062:1994, of which it constitutes a technical revision. ISO 8062 consists of the following parts, under the general title Geometrical product specifications (GPS) Dimensional and geometrical tolerances for moulded parts: Part 1: Vocabulary Part 3: General dimensional and geometrical
31、tolerances and machining allowances for castings Rules is to form the subject of a future Part 2 Technical Specification. EN ISO 8062-3:2007 Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:12:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI v Introduction This p
32、art of ISO 8062 is a geometrical product specification (GPS) standard and is to be regarded as a complementary process-specific tolerance standard (see ISO/TR 14638). It influences chain link 2 of the chain of standards on mouldings. For more detailed information about the relation of this part of I
33、SO 8062 to other standards and the GPS matrix model, see Annex F. This part of ISO 8062 defines a system of tolerance grades and machining allowance grades for cast metals and their alloys. The specified system applies if the manufacturer provides a pattern or die equipment, or accepts responsibilit
34、y for proving it. The tolerances specified for a casting may determine the casting method. It is therefore recommended, before the design or the order is finalized, that the customer liaise with the foundry to discuss: a) the proposed casting design and accuracy required; b) machining requirements;
35、c) the method of casting; d) the location of the parting surfaces and the necessary draft angles; e) the number of castings to be manufactured; f) the casting equipment involved; g) the consequences of the wear-out of the equipment during its life cycle; h) the datum system in accordance with ISO 54
36、59; i) the casting alloy; j) any special requirements, e.g. individual dimensional and geometrical tolerances, fillet radii, tolerances and individual machining allowances; NOTE Because the dimensional and geometrical accuracy of a casting is related to production factors, tolerance grades which can
37、 be achieved for various methods and metals are described in Annex A. k) dimensional tolerances for long series and mass production, where development, adjustment and maintenance of casting equipment make it possible to achieve close tolerances; l) dimensional tolerances for short series and single
38、production; m) geometrical tolerances. Information on typical required machining allowance grades is given in Annex B. EN ISO 8062-3:2007 Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:12:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI blank Licensed Copy: Lon
39、don South Bank University, London South Bank University, Fri Nov 16 07:12:10 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 1 Geometrical product specifications (GPS) Dimensional and geometrical tolerances for moulded parts Part 3: General dimensional and geometrical tolerances and machining allowances
40、for castings 1 Scope This part of ISO 8062 specifies general dimensional and geometrical tolerances, as well as machining allowance grades, for castings as delivered to the purchaser in accordance with ISO 8062-2. It is applicable for the tolerancing of dimensions and geometry, and required machinin
41、g allowance of castings in all cast metals and their alloys produced by various casting manufacturing processes. This part of ISO 8062 applies to both general dimensional and general geometrical tolerances (referred to in or near the title block of the drawing), unless otherwise specified, and where
42、 specifically referred to on the drawing by one of the references in Clause 9. The dimensional tolerances covered by this part of ISO 8062 are tolerances for linear dimensions. The geometrical tolerances covered by this part of ISO 8062 are: tolerances for straightness, flatness, roundness, parallel
43、ism, perpendicularity, symmetry, and coaxiality. This part of ISO 8062 can be used for the selection of tolerance values for individual indications. NOTE This part of ISO 8062 does not apply to 3D CAD models used without indicated dimensions. 2 Normative references The following referenced documents
44、 are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 286-1:1988, ISO system of limits and fits Part 1: Bases of tolerances, deviatio
45、ns and fits ISO 1101:2004, Geometrical Product Specifications (GPS) Geometrical tolerancing Tolerances of form, orientation, location and run-out EN ISO 8062-3:2007 Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:12:10 GMT+00:00 2007, Uncontrolled Copy, (c) B
46、SI 2 ISO 1302:2002, Geometrical Product Specifications (GPS) Indication of surface texture in technical product documentation ISO 5459:1), Geometrical product specifications (GPS) Geometrical tolerancing Datums and datum- systems ISO 8062-1:2007, Geometrical product specifications (GPS) Dimensional
47、and geometrical tolerances for moulded parts Part 1: Vocabulary ISO/TS 8062-2:2), Geometrical product specifications (GPS) Dimensional and geometrical tolerances for moulded parts Part 2: Rules ISO 10135:3 ), Geometrical product specifications (GPS) Drawing indications for moulded parts in technical
48、 product documentation (TPD) ISO 10579:1993, Technical drawings Dimensioning and tolerancing Non-rigid parts ISO 14405:4), Geometrical product specifications (GPS) Dimensional tolerancing Linear sizes 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 8
49、062-1, ISO 1101 and ISO 5459 apply. 4 Abbreviated terms Abbreviated terms are given in Table 1. Table 1 Abbreviated terms Abbreviated term Interpretation Reference DCT Dimensional casting tolerance 5.2 DCTG Dimensional casting tolerance grade 5.2 GCT Geometrical casting tolerance 5.3 GCTG Geometrical casting tolerance grade 5.3 RMA Required machining allowance Clause 8 RMAG Required machining allowan