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BS ISO 16792:2021

$215.11

Technical product documentation. Digital product definition data practices

Published By Publication Date Number of Pages
BSI 2021 88
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This document specifies requirements for the preparation, revision and presentation of digital product definition data, hereafter referred to as data sets, complementing existing standards. It supports two methods of application: 3D model-only and 3D model with 2D drawing in digital format. The structure of this document presents requirements common to both methods followed by clauses providing for any essential, differing requirements for each method. Additionally, its use in conjunction with computer-aided design (CAD) systems can assist in the progression towards improved modelling and annotation practices for CAD and engineering disciplines, as well as serving as a guideline for CAx software developers.

The actual definitions for the interpretation, in particular the ISO TPD and ISO GPS rules, are taken from the original definition standards, e.g. ISO 129-1 and ISO 1101.

When the term model is used in this document it applies to both design models and annotated models.

PDF Catalog

PDF Pages PDF Title
2 National foreword
8 Foreword
9 Introduction
11 1 Scope
2 Normative references
12 3 Terms and definitions
3.1 General terms and definitions
13 3.2 Classification codes for drawings and data sets (see Annex B)
4 Data set identification and control
4.1 General
14 4.2 Related data
4.3 Data management
16 5 Data set requirements
5.1 General
5.1.1 Introduction
5.1.2 Fundamental requirements
18 5.1.3 Design model requirement (classification codes 3, 4 and 5)
5.2 General model requirements
5.2.1 Associativity
19 5.2.2 Model coordinate systems
20 5.2.3 Applications of supplemental geometry
5.2.4 Part features not fully modelled
5.3 General method requirements
5.3.1 Data set methods
5.3.2 Model-only method
5.3.3 Model and drawing method
21 5.4 Management data
5.4.1 General
5.4.2 Management data in the data set
5.4.3 Management data on a model
22 5.5 Protection marking
5.5.1 General
5.5.2 Location on models
5.6 Saved views on models
5.6.1 General
5.6.2 Sections
24 6 Design model requirements
6.1 General
25 6.2 Geometric scale, units and precision
6.3 Model completeness
26 6.4 Assembly model completeness
6.5 Part reference numbers
27 6.6 Identification method
6.6.1 General
6.6.2 Colour
6.6.3 Greyscale
6.6.4 Mapping
28 6.6.5 Transparency
6.7 Installation model completeness
29 7 Common requirements for product definition data
7.1 General
7.2 Common requirements
31 7.3 Model requirements
7.3.1 General
32 7.3.2 Associativity
34 7.3.3 Attributes
35 7.3.4 Annotation planes
36 7.3.5 Leader lines
37 7.3.6 Direction-dependent specifications
7.3.7 Indicating of restricted area
38 7.3.8 Query types
43 7.4 Drawing requirements
7.4.1 General
46 7.4.2 Orthographic views
7.4.3 Axonometric views
48 8 Notes and special notations
8.1 Common requirements
8.2 Model requirements
49 8.3 Drawing requirements
9 Model values and dimensions
9.1 General
9.2 Common requirements
9.2.1 Model value queries
9.2.2 Resolved dimensions
50 9.3 Model requirements
9.3.1 General
9.3.2 Theoretically exact dimensions (TEDs)
51 9.3.3 Size values
52 9.3.4 Examples of general applications
9.3.5 Chamfers
55 9.3.6 Depth specification
58 9.4 Drawing requirements for axonometric views
10 Datum applications
10.1 General
10.2 Model requirements
10.2.1 Datum systems and model coordinate systems
60 10.2.2 Identification of datums
62 10.2.3 Identification of restricted area application
63 10.2.4 Associativity of datum features and design data
10.2.5 Datum target identification and attachment
65 10.2.6 Multiple features establishing a datum
70 10.3 Drawing requirements
71 11 Geometric tolerances
11.1 General
11.2 Drawing requirements
11.2.1 General
72 12 Welds
12.1 General
12.2 Common requirements
12.2.1 Application of supplemental geometry
12.2.2 Arrow lines
73 12.3 Model requirements
12.3.1 Annotation plane
12.3.2 Associativity
12.3.3 Indicating extents of the weld
75 12.3.4 Query of weld path
76 12.4 Drawing requirements
13 Surface texture
13.1 General
13.2 Common requirements
13.3 Model requirements
13.3.1 Display techniques
13.3.2 Associativity
77 Annex A (informative) Former practices
79 Annex B (informative) Classification codes for drawings and data sets
81 Annex C (informative) Examples
86 Bibliography
BS ISO 16792:2021
$215.11