ISO 10303-109-2004 PDF

Full title and description

Industrial automation systems and integration — Product data representation and exchange — Part 109: Integrated application resource: Kinematic and geometric constraints for assembly models. This standard (ISO 10303-109:2004) defines resource constructs used to represent detailed geometric and kinematic relationships between constituents of an assembly model, including geometric constraints and kinematic constructs for assemblies.

Abstract

ISO 10303-109:2004 specifies the constructs needed to represent detailed geometric relationships in assembly models. It covers association of shape-aspect relationships with their representations, instanced assembly feature relationships and their representations, representation of detailed geometric information at the geometric_representation_item level (assembly geometric constraints, kinematic pairs and kinematic paths), and the representation of a fixed constituent used as an anchor in the assembly model. It explicitly excludes product structure configurations and tolerance information.

General information

• Status: Published.
• Publication date: December 2004 (2004-12).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.040.40 (Industrial process measurement and control).
• Edition / version: Edition 1 (2004).
• Number of pages: 46.

Scope

This part of ISO 10303 defines the integrated application resource for expressing kinematic and geometric constraints within assembly models. It focuses on how to associate assembly relationships (shape aspects and instanced assembly feature relationships) with their geometric representations and how to represent assembly-level geometric constraints, kinematic pairs and paths, and the designation of a fixed (anchor) constituent in an assembly. The standard does not address product structure configurations or tolerance information.

Key topics and requirements

• Representation of assembly geometric constraints (explicit constructs for constraint definition between assembly constituents).
• Modeling of kinematic constructs: kinematic pairs and kinematic paths to represent relative motion in assemblies.
• Association of shape-aspect and instanced assembly feature relationships with geometric_representation_item-level representations.
• Definition of a fixed constituent (anchor) role within an assembly model.
• Interoperability requirements for CAD/PLM exchange where detailed assembly constraints and kinematics must be preserved across systems.

Typical use and users

Used by CAD and PLM software developers, systems integrators, design and mechanical engineers, and organizations implementing STEP-based data exchange where preserving assembly-level geometric and kinematic information is required. It is typically applied when accurate constraint and motion semantics must be exchanged between tools or archived as part of a product model.

Related standards

ISO 10303-109 is part of the broader ISO 10303 (STEP) family. Commonly referenced and related documents include other Integrated Application Resources and Application Protocols within ISO 10303 (for example APs such as AP203, AP214 and the newer AP242 which consolidates several APs). Parts dealing with geometry and topology (for example ISO 10303-42 and related Integrated Resources) and STEP implementation parts (such as Part 21 for STEP-File) are often used together with Part 109 implementations.

Keywords

ISO 10303, STEP, Part 109, integrated application resource, kinematic constraints, geometric constraints, assembly models, assembly kinematics, AP109, geometric_representation_item.

FAQ

Q: What is this standard?

A: ISO 10303-109:2004 is an ISO standard (part of the STEP family) that defines an integrated application resource for representing kinematic and geometric constraints in assembly models.

Q: What does it cover?

A: It covers data constructs to represent detailed geometric relationships and kinematic entities in assemblies (assembly geometric constraints, kinematic pairs and paths), association of shape-aspect and instanced assembly feature relationships to their geometric representations, and the designation of a fixed constituent in an assembly. It excludes product structure configurations and tolerance data.

Q: Who typically uses it?

A: CAD/PLM vendors, integration engineers, mechanical and design engineers, and organizations exchanging detailed assembly constraint and motion information use this resource when implementing STEP-based data exchange.

Q: Is it current or superseded?

A: The original edition (ISO 10303-109:2004) is published and has been maintained with corrigenda; Technical Corrigendum 1 (2010) and Technical Corrigendum 2 (2014) amend the 2004 edition. It remains a published part of ISO 10303; users should check for the latest corrigenda or newer related Application Protocols (for example AP242 developments) when planning implementations.

Q: Is it part of a series?

A: Yes — it is Part 109 of the ISO 10303 (STEP) family. ISO 10303 is a modular standard composed of Integrated Resources, Integrated Application Resources, Application Protocols (APs), and other parts that together provide data models and exchange mechanisms for product data. Part 109 is one of the Integrated Application Resources (IAR) within that architecture.

Q: What are the key keywords?

A: STEP, ISO 10303, kinematic constraints, geometric constraints, assembly model, geometric_representation_item, integrated application resource, AP109.