1、December 2014Translation by DIN-Sprachendienst.English price group 12No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC
2、S 01.100.20!%Zk“2275572www.din.deDDIN ISO 15786Technical drawings Simplified representation and dimensioning of holes (ISO 15786:2008),English translation of DIN ISO 15786:2014-12Technische Zeichnungen Vereinfachte Darstellung und Bemaung von Lchern (ISO 15786:2008),Englische bersetzung von DIN ISO
3、15786:2014-12Dessins techniques Reprsentation et cotation simplifies des trous (ISO 15786:2008),Traduction anglaise de DIN ISO 15786:2014-12SupersedesDIN 6780:2000-10www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.2401.15 DIN ISO 1
4、5786:2014-12 A comma is used as the decimal marker. Contents Page National foreword .3 National Annex NA (informative) Bibliography 5 Introduction .6 1 Scope 7 2 Normative references 7 3 Terms and definitions .8 4 Methods of representation and dimensioning of holes .8 4.1 Complete representation and
5、 complete dimensioning of holes .8 4.2 Complete representation and simplified dimensioning of holes 8 4.3 Simplified representation and simplified dimensioning of holes .8 4.4 Representation of holes on the same drawing .8 5 Structure of dimensioning of holes .9 5.1 Structure and sequence of descrip
6、tive elements for simplified dimensioning of holes .9 5.2 Graphical symbols .10 5.3 Number of groups of holes and number of holes in a group 12 5.4 Indication of tolerances 13 5.5 Hole bottom 13 5.6 Countersinks and chamfers .13 5.7 Depth dimensions 14 5.8 Indication of surface texture .16 5.9 Indic
7、ation of dimensions on geometrical tolerances.18 Annex A (informative) Examples for representation and dimensioning of holes, counterbores and internal threads 19 Bibliography 24 2 DIN ISO 15786:2014-12 National foreword The text of this document (ISO 15786:2008) has been prepared by Technical Commi
8、ttee ISO/TC 10 “Technical product documentation”, Subcommittee SC 6 “Mechanical engineering documentation” (Secretariat: SAC, China). The responsible German body involved in its preparation was the DIN-Normenausschuss Technische Grundlagen (DIN Standards Committee Technical Fundamentals), Working Co
9、mmittee NA 152-06-05 AA Technisches Zeichnen. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. DIN shall not be held responsible for identifying any or all such patent rights. This standard has been drawn up in order to provide a b
10、etter overview of technical drawing techniques and to allow the automatic data transfer of two-dimensional CAD drawings. To this end all data that is necessary to produce holes needs to be represented and dimensioned in a comprehensive manner. This means that the cuts and details that were previousl
11、y necessary can now be dispensed with, which contributes to the legibility of the drawing. The hole coordinates (X and Y), starting plan, and hole data such as diameter, depth (Z), etc. are needed in order to set up a working plan on the basis of a drawing. Text has not been given in the figures so
12、that they are language-neutral and can be understood worldwide. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 128-22 DIN ISO 128-22 ISO 128-30 DIN ISO 128-30 ISO 128-34 DIN ISO 128-34 ISO 128-40 DIN ISO 128-40 ISO 128-44 DIN ISO 128-4
13、4 ISO 128-50 DIN ISO 128-50 ISO 1101 DIN EN ISO 1101 ISO 1302 DIN EN ISO 1302 ISO 5458 DIN EN ISO 5458 ISO 6410-3 DIN ISO 6410-3 The ISO 129 series is not used in Germany; DIN 406, Parts 11, 12 and 13 are used instead. Amendments This standard differs from DIN 6780:2000-10 as follows: a) the standar
14、d has been aligned with International Standard ISO 15786; b) the rear side is no longer covered; c) the dimension indicated up to bit is no longer represented by the symbol “V” but by the symbol “Y”; d) the structure of the standard has been aligned with the ISO structure; e) the figures are now the
15、 figures from ISO 15786; 3 DIN ISO 15786:2014-12 f) envelope requirements have been deleted; g) coordinate dimensioning is no longer covered; h) the standard has been editorially revised. Previous editions DIN 6780: 2000-10 4 DIN ISO 15786:2014-12 National Annex NA (informative) Bibliography DIN ISO
16、 128-22, Technical drawings General principles of presentation Part 22: Basic conventions and applications for leader lines and reference lines DIN ISO 128-30, Technical drawings General principles of presentation Part 30: Basic conventions for views DIN ISO 128-34, Technical drawings General princi
17、ples of presentation Part 34: Views on mechanical engineering drawings DIN ISO 128-40, Technical drawings General principles of presentation Part 40: Basic conventions for cuts and sections DIN ISO 128-44, Technical drawings General principles of presentation Part 44: Sections on mechanical engineer
18、ing drawings DIN ISO 128-50, Technical drawings General principles of presentation Part 50: Basic conventions for representing areas on cuts and sections DIN EN ISO 1101, Geometrical Product Specifications (GPS) Geometrical tolerancing Tolerances of form, orientation, location and run-out DIN EN ISO
19、 1302, Geometrical Product Specifications (GPS) Indication of surface texture in technical product documentation DIN EN ISO 5458, Geometrical product specification (GPS) Geometrical tolerancing Positional tolerancing DIN ISO 6410-3, Technical drawings Screw threads and threaded parts Simplified repr
20、esentation 5 Introduction This International Standard has been established to specify the simplified representation and dimensioning of holes. The rules established by this International Standard determine, unambiguously, methods for the representation both complete and simplified and the dimensioni
21、ng of holes, as well as the structure and sequence of the descriptive elements for the simplified representation of holes. Technical drawings Simplified representation and dimensioning of holes DIN ISO 15786:2014-12 6 1 Scope This International Standard specifies rules for the simplified representat
22、ion, dimensioning and tolerancing of holes, counterbores, internal threads and chamfers on drawings. Where there could be misinterpretation using simplified representation, the complete representation and dimensioning by cuts, sections or elements on a larger scale apply, according to ISO 128-30, IS
23、O 128-34, ISO 128-40, ISO 128-44, ISO 128-50, ISO 129-1 and ISO 406. 2 Normative references The following referenced documents 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 do
24、cument (including any amendments) applies. ISO 128-22, Technical drawings General principles of presentation Part 22: Basic conventions and applications for leader lines and reference lines ISO 128-30, Technical drawings General principles of presentation Part 30: Basic conventions for views ISO 128
25、-34, Technical drawings General principles of presentation Part 34: Views on mechanical engineering drawings ISO 128-40, Technical drawings General principles of presentation Part 40: Basic conventions for cuts and sections ISO 128-44, Technical drawings General principles of presentation Part 44: S
26、ections on mechanical engineering drawings ISO 128-50, Technical drawings General principles of presentation Part 50: Basic conventions for representing areas on cuts and sections ISO 129-1N1), Technical drawings Indication of dimensions and tolerances Part 1: General principles ISO 406N2), Technica
27、l drawings Tolerancing of linear and angular dimensions ISO 1101, Geometrical Product Specifications (GPS) Geometrical tolerancing Tolerances of form, orientation, location and run-out ISO 1302, Geometrical Product Specifications (GPS) Indication of surface texture in technical product documentation
28、 ISO 5458, Geometrical Product Specifications (GPS) Geometrical tolerancing Positional tolerancing ISO 6410-3:1993, Technical drawings Screw threads and threaded parts Part 3: Simplified representation N1) National footnote: The ISO 129 series is not used in Germany; DIN 406, Parts 11, 12 and 13 are
29、 used instead. N2) National footnote: ISO 406:1987 was withdrawn in 2000-06. DIN ISO 15786:2014-12 7 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 complete representation of holes representation of holes in accordance with generally valid r
30、ules and projection methods for technical drawings 3.2 simplified representation of holes representation of holes, drawn either true to scale or not, with a symbolic representation of the features 3.3 complete dimensioning of holes dimensioning of holes using dimension lines and extension lines 3.4
31、simplified dimensioning of holes dimensioning of holes using leader lines and reference lines 4 Methods of representation and dimensioning of holes 4.1 Complete representation and complete dimensioning of holes The complete representation and dimensioning of holes according to ISO 128-30, ISO 128-34
32、, ISO 128-40, ISO 128-44, ISO 128-50 and ISO 129-1 applies in all cases where a simplified representation of holes and dimensioning could lead to misinterpretation of the drawing (see Table 1). 4.2 Complete representation and simplified dimensioning of holes Representation and dimensioning of holes
33、in the sections is preferred. For dimensioning in the sections, the leader line is directed towards the point of intersections of the visible edge of the part and the centre line of the hole, ending with an arrowhead on the centre line of the hole. For dimensioning in the view from above, the leader
34、 line is directed towards the centre of the hole, ending with an arrowhead on the outline of the hole (see Table 1). For rules relative to the use of leader lines and reference lines, see ISO 128-22. 4.3 Simplified representation and simplified dimensioning of holes For simplified representation and
35、 simplified dimensioning of holes, only the centre lines of the holes are shown. In the case of the view from above, the location of the centre of the hole is represented by a cross using continuous wide lines (according to ISO 128-24:1999, type 01.2). The location of holes represented parallel to t
36、he plane of projection is shown by a long-dashed dotted narrow line (according to ISO 128-24:1999, type 04.1). In the case of simplified dimensioning, the leader line ends with an arrowhead at the centre of the hole or at the point of intersection of the visible edge of the part and the centre line
37、of the hole. The arrowhead points to the surface of the part from which the features are indicated (direction of manufacture; exception, see 5.3) (see Table 1). 4.4 Representation of holes on the same drawing It is suggested that holes should be drawn and represented using only one of the methods of
38、 Table 1 to avoid causing confusion on the same drawing. N3) National footnote: A reference line connects with a leader line following the main reading direction. N3)DIN ISO 15786:2014-12 8 Table 1 Comparison of methods for representation and dimensioning of holes Complete representation and complet
39、e dimensioning according to ISO 129-1 Complete representation and simplified dimensioning Simplified representation and simplified dimensioning 5 Structure of dimensioning of holes 5.1 Structure and sequence of descriptive elements for simplified dimensioning of holes The structure of the simplified
40、 dimensioning of holes is composed of continuous enumeration and denominations of features used. This means that the graphical symbols (e.g. ) and the dimensions (e.g. diameter, hole depths, tolerances) are shown one below the other. The feature with the largest dimension shall be shown in the first
41、 line. The data shall be marked in characters of the same size, with the exception of the indication of surface texture (see 5.8). The necessary data for each feature, several identical features or several groups of identical features are indicated on one line of the simplified dimensioning. Structu
42、re and sequence of data is explained in Figure 1. N4)N4) National footnote: The different features are placed one below the other. DIN ISO 15786:2014-12 9 Figure 1 Structure and sequence of descriptive elements Figure 2 Indication on a drawing 5.2 Graphical symbols See Table 2. Table 2 Symbols No. S
43、ymbol Term Example Figure 1 Diameter (ISO 129-1) 10 4, 5, 6, 7, 8 2 Square (ISO 129-1) 20 Table A.1, No. 63 Sign between nominal size and depth or angle dimensions, number of features and of groups of features M10 25 4, 5, 7, 8, 14 4 / Sign between depth dimensions or between number of groups and nu
44、mber of features, e.g. thread length and bottom hole depth M10 25/30 9, 12 5 U Cylindrical counterbore, flat hole bottom 10 25U 3, 4 6 V Material-dependent bit (point angle of hole bottom) 10 25V 6 7 W Indexable insert bit (hole bottom) 10 25W 5 8 Y Dimension indicated up to bit 10 28Y 8 DIN ISO 157
45、86:2014-12 10 a) Complete representation and complete dimensioning b) Complete representation and simplified dimensioning c) Simplified representation and simplified dimensioning Figure 3 Hole with counterbore a) Complete representation and complete dimensioning b) Complete representation and simpli
46、fied dimensioning c) Simplified representation and simplified dimensioning Figure 4 Hole with flat hole bottom a) Complete representation and complete dimensioning b) Complete representation and simplified dimensioning c) Simplified representation and simplified dimensioning Figure 5 Hole with botto
47、m produced using indexable insert a) Complete representation and complete dimensioning b) Complete representation and simplified dimensioning c) Simplified representation and simplified dimensioning Figure 6 Hole with dimension to point angle of hole bottom DIN ISO 15786:2014-12 11 a) Complete repre
48、sentation and complete dimensioning b) Complete representation and simplified dimensioning c) Simplified representation and simplified dimensioning Figure 7 Chamfered hole (hole bottom not specified) a) Complete representation and complete dimensioning b) Complete representation and simplified dimen
49、sioning c) Simplified representation and simplified dimensioning Figure 8 Hole with dimension indicated up to bit 5.3 Number of groups of holes and number of holes in a group Groups of identical holes (counterbores and bores) shall be dimensioned and toleranced with a single instruction. For the repeated groups of holes, only those dimensions necessary to i
