1、 Reference number ISO 10303-109:2004(E) ISO 2004INTERNATIONAL STANDARD ISO 10303-109 First edition 2004-12-01 Industrial automation systems and integration Product data representation and exchange Part 109: Integrated application resource: Kinematic and geometric constraints for assembly models Syst
2、mes dautomatisation industrielle et intgration Reprsentation et change de donnes de produits Partie 109: Ressources dapplication intgres: Contraintes cinmatiques et gomtriques pour les modles dassemblage ISO 10303-109:2004(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance
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7、 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2004 All rights reservedISO 10303-109:2004(E) ISO 2004-All rights reserved iii Contents Page 1 Scope1 2 Normative references .2 3 Terms, definitions, and abbreviations 3 3.1 Terms
8、 defined in ISO 10303-1 .3 3.2 Terms defined in ISO 10303-11 .3 3.3 Terms defined in ISO 10303-41 .3 3.4 Terms defined in ISO 10303-42 .3 3.5 Terms defined in ISO 10303-43 .3 3.6 Terms defined in ISO 10303-44 .4 3.7 Terms defined in ISO 10303-108 .4 3.8 Abbreviations.4 4 Assembly feature relationshi
9、p5 4.1 Introduction 5 4.2 Fundamental concepts and assumptions.6 4.3 Assembly feature relationship type definitions 7 4.3.1 Representing relationship .7 4.4 Assembly feature relationship entity definitions 7 4.4.1 Shape aspect relationship representation association .7 4.4.2 Representative shape rep
10、resentation.9 4.4.3 Free kinematic motion representation.10 4.4.4 Constrained kinematic motion representation 12 4.5 Assembly feature relationship function definitions13 4.5.1 Assembly root.13 4.5.2 Find assembly root14 4.5.3 Find shape representation of product definition .16 4.5.4 Find shape repre
11、sentation of shape aspect17 4.5.5 Find representative shape representation of product definition.18 4.5.6 Find representative shape representation of shape aspect18 4.5.7 Unique in product definition.19 4.5.8 Unique in shape aspect .20 4.5.9 Using product definition of shape aspect21 4.5.10 Using pr
12、oduct definition of shape representation.22 4.5.11 Using shape aspect of shape representation23 4.5.12 Using representations with mapping.24 5 Assembly constraint.26 5.1 Introduction.26 5.2 Fundamental concepts and assumptions.27 ISO 10303-109:2004(E) iv 5.3 Assembly constraint entity definitions .2
13、9 5.3.1 Assembly geometric constraint.29 5.3.2 Binary assembly constraint .29 5.3.3 Fixed constituent assembly constraint31 5.3.4 Parallel assembly constraint .32 5.3.5 Parallel assembly constraint with dimension33 5.3.6 Surface distance assembly constraint with dimension33 5.3.7 Angle assembly cons
14、traint with dimension 34 5.3.8 Perpendicular assembly constraint .34 5.3.9 Incidence assembly constraint 35 5.3.10 Coaxial assembly constraint .35 5.3.11 Tangent assembly constraint.36 5.4 Assembly constraint function definitions .36 5.4.1 Assembly leaf .36 Annex A (normative) Short names of entitie
15、s.38 Annex B (normative) Information object registration.39 B.1 Document identification 39 B.2 Schema identification 39 B.2.1 Identification of the schema assembly_feature_relationship.39 B.2.2 Identification of the schema assembly_constraint.39 Annex C (informative) Computer-interpretable listings
16、.40 Annex D (informative) EXPRESS-G diagrams 41 Annex E (informative) Informative figures.44 Index.46 Figures Figure 1 Schema level diagram of relationships between ISO 10303-109 schemas (inside the box) and other resource schemas.viii Figure D.1 EXPRESS-G diagram of the assembly_feature_relationshi
17、p_schema (1 of 1).42 Figure D.2 EXPRESS-G diagram of the assembly_constraint_schema (1 of 1).43 Figure E.1 Relationships of schemas in this part of ISO 10303 and related modules with existing resource entities (overall structure).45 Tables Table A.1 Short names of entities38 ISO 2004-All rights rese
18、rved ISO 2004-All rights reserved v 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 i
19、nterested 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 Electrotechn
20、ical 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 th
21、e 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 part of ISO 10303 may be the subject of paten
22、t rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 10303-109 was prepared by Technical Committee ISO/TC184, Industrial automation systems and integration, Subcommittee SC4, Industrial data. ISO 10303 is organized as a series of parts, each published separa
23、tely. The structure of ISO 10303 is described in ISO 10303-1. Each part of ISO 10303 is a member of one of the following series: description methods, implementation methods, conformance testing methodology and framework, integrated generic resources, integrated application resources, application pro
24、tocols, abstract test suites, application interpreted constructs, and application modules. This part is a member the of integrated application resources series. The integrated generic resources and the integrated application resources specify a single conceptual product data model. A complete list o
25、f parts of ISO 10303 is available from the Internet: ISO 10303-109:2004(E) ISO 10303-109:2004(E) vi Introduction ISO 10303 is an International Standard for the computer-interpretable representation of product information and for the exchange of product data. The objective is to provide a neutral mec
26、hanism capable of describing products throughout their life cycle. This mechanism is suitable not only for neutral file exchange, but also as a basis for implementing and sharing product databases, and as a basis for archiving. This part of ISO 10303 is a member of the integrated application resourc
27、es series. Major subdivisions of this part of ISO 10303 are: Assembly feature relationship schema; Assembly constraint schema. This part of ISO 10303 provides general representations for geometric relationships between component parts within an assembly model. The distinction of assembly, subassembl
28、y and component part is context dependent. An assembly in some engineering context could be a component part in another engineering context. In order to cope with this variety, this part of ISO 10303 uses the term constituent to represent a generic concept that implies assembly or subassembly or com
29、ponent part in case these distinctions are not necessary. EXAMPLE 1 For some applications, an electric motor is regarded as a single component part of a washing machine rather than as an assembly in its own right. Detailed geometric relationships between constituents of an assembly are required in a
30、pplications such as parametric representation of geometric constraints between constituents, motion animation of an assembly product, assembly/disassembly process planning, kinematics analysis and tolerance analysis. Existing STEP resource parts support limited assembly model representations. They c
31、apture hierarchical relationship, alternative constituent and mutual position and orientation between two constituents. This part of ISO 10303 is intended to fill in missing information to enable the above mentioned applications. An important concept newly introduced in this part of ISO 10303 is ass
32、embly feature. An assembly feature is a portion of a constituent meaningful for representing the connecting relation between constituents. The detailed geometric relationship between two constituents can be represented via the necessary number of pairs of assembly features one belonging to one const
33、ituent and the other belonging to the other constituent. The assembly_feature_relationship_schema has been created to capture feature level correspondence between constituents. ISO 2004-All rights reserved ISO 2004-All rights reserved vii detailed geometric constraint information such as parallelism
34、, coincidence, tangency, and co-axial relationships are required at the geometric entity level. EXAMPLE 2 Two plates belonging to different constituents are constrained to be parallel with distance-L. These geometric constraint specifications applied between two constituents are summarised in the as
35、sembly_constraint_schema. In assembly related applications, the position and orientation of at least one constituent within an assembly model should be fixed to prevent infinite number of solutions. This constituent plays the role of an anchor. The necessary constraint is also included in the assemb
36、ly- _constraint_schema. This part of ISO 10303 is a member of a set of standards newly introduced for representing detailed geometric relationships among constituents of an assembly model of a product. They are: ISO 10303-109: Integrated application resources: Kinematic and geometric constraints for
37、 assembly models ISO 10303-1101: Application Module: Product property feature definition module ISO 10303-1102: Application Module: Assembly feature definition module The relationships between schemas in this part of ISO 10303 and existing integrated resource schemas of ISO 10303 are illustrated in
38、Figure 1. The schemas occurring in Figure 1 are components of ISO 10303 integrated resources, and they are specified in the following resource parts: explicit_constraint_schema ISO 10303-108 explicit_geometric_constraint_schema ISO 10303-108 geometric_model_schema ISO 10303-42 geometry_schema ISO 10
39、303-42 kinematic_motion_representation_schema ISO 10303-105 kinematic_structure_schema ISO 10303-105 parameterization_schema ISO 10303-108 product_definition_schema ISO 10303-41 product_property_definition_schema ISO 10303-41 product_property_representation_schema ISO 10303-41 product_structure_sche
40、ma ISO 10303-44 representation_schema ISO 10303-43 ISO 10303-109:2004(E) In most assembly related applications, not only correspondence of assembly features but also more ISO 10303-109:2004(E) viii Figure 1 Schema level diagram of relationships between ISO 10303-109 schemas (inside the box) and othe
41、r resource schemas representation_ schema product_ property_ definition_ schema kinematic_ motion_ representation_ schema assembly_ constraint_ schema assembly_ feature_ relationship_ schema product_ structure_ schema product_ property_ representation_ schema product_ definition_ schema geometry_ sc
42、hema kinematic_ structure_ schema geometric_ model_ schema explicit_ geometric_ constraint_ schema explicit_ constraint_ schema parameterization_ schema support_ resource_ schemaISO 2004-All rights reserved ISO 2004-All rights reserved 1 INTERNATIONAL STANDARD ISO 10303-109:2004(E) Industrial automa
43、tion systems and integration Product data representation and exchange Part 109: Integrated application resource: Kinematic and geometric constraints for assembly models 1 Scope This part of ISO 10303 specifies the resource constructs for the representation of detailed geometric relationships between
44、 constituents of an assembly model including geometric constraints between constituents. The following are within the scope of this part of ISO 10303: The association of shape aspect relationship with its representation; The association of instanced assembly feature relationship with its representat
45、ion; The representation of detailed geometric information of instanced assembly feature relationship at the geometric_representation_item level in terms of elements such as assembly geometric constraints, kinematics pair and kinematics path; The representation of the fixed constituent which plays th
46、e anchor role in the assembly model. The following are outside the scope of this part of ISO 10303: Product structure configurations of assemblies and their constituents. Tolerance information. See clause 5.2 of this part of ISO 10303. ISO 10303-109:2004(E) 2 2 Normative references The following ref
47、erenced 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 document (including any amendments) applies. ISO/IEC 8824-1, Information technology Abstract Syntax Notation On
48、e (ASN.1): Specification of basic notation. ISO 10303-1, Industrial automation systems and integration Product data representation and exchange Part 1: Overview and fundamental principles. ISO 10303-11, Industrial automation systems and integration Product data representation and exchange Part 11: Description methods: The EXPRESS language reference manual. ISO 10303-41, Industrial automation systems and integration Product data representation and exchange Part 41: Integrated generic resource: Fundamentals of product description and support. ISO 103
