ISO/TS 10303-1102:2005

Overview

ISO/TS 10303-1102:2005 is a Technical Specification in the ISO 10303 family (STEP) addressing product data representation and exchange. It specifies an application module for assembly feature definition, defining how assembly-related feature concepts are represented for interoperability between CAD, PLM and manufacturing systems. The document is the first edition (2005) and includes ARM and MIM EXPRESS listings for implementation guidance.

Key topics and requirements

The specification focuses on a compact set of assembly-feature concepts and their data representations:

• Characterized object as an assembly feature definition
  • Specifies how a characterized object is used to define an assembly feature of a product.
• Shape aspect as an instanced assembly feature
  • Defines the use of a shape aspect to represent an instanced (applied) assembly feature on a specific product occurrence.
• Shape aspect relationship as peer-to-peer
  • Specifies the shape-aspect relationship model as a peer-to-peer relationship between a pair of instanced assembly features.

Other practical elements found in the published package:

• ARM (Application Reference Model) and MIM (Module Implementation Model) EXPRESS listings to support implementers.
• File-structure and installation notes for the distributed HTML/EXPRESS content.

Applications

ISO/TS 10303-1102 is intended for environments where consistent representation of assembly features is required to support:

• CAD data exchange between different modeling systems
• Product lifecycle management (PLM) and configuration control
• Downstream manufacturing processes that rely on feature-based information (assembly planning, robotic assembly)
• Supplier and aftermarket data exchange where feature semantics must be preserved

Using this module helps maintain semantic consistency of assembly features across systems, reducing rework, translation errors, and ambiguity in assembly data.

Who should use it

• CAD/CAE software developers implementing STEP application modules
• PLM architects and data integrators aligning assembly semantics
• Systems integrators and manufacturing engineers working on data-driven assembly automation
• Standards engineers and implementers creating or mapping data schemas for product assembly exchange

Related standards

• ISO 10303 (STEP) series - the broader framework for product data representation and exchange, of which this application module is a part
• Other ISO 10303 application modules addressing shape, product structure, and manufacturing features (consult the STEP parts catalogue for related numbers)

Keywords: ISO/TS 10303-1102, assembly feature definition, product data representation, STEP, application module, shape aspect, instanced assembly feature, characterized object, product data exchange.