ISO 10303-507-2001 PDF

Full title and description

Industrial automation systems and integration — Product data representation and exchange — Part 507: Application interpreted construct: Geometrically bounded surface. This part of ISO 10303 (STEP) defines the application‑interpreted construct used to represent geometrically bounded surface models for product data exchange.

Abstract

This part specifies the interpretation of integrated STEP resources required to represent geometric shapes by means of geometrically bounded surface models, including 3D points and curves, curves defined in parameter space of surfaces (pcurves), elementary curves (line, circle, ellipse, parabola, hyperbola), intersection curves, polylines, elementary surfaces (plane, cylinder, cone, torus, sphere), swept and sculptured surfaces, trimming, composition and replication of surfaces, and 3D offsets.

General information

• Status: Published (International Standard, confirmed in systematic review cycles).
• Publication date: 25 January 2001 (Edition 1, 2001).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.040.40 (Industrial process measurement and control / product data representation and exchange).
• Edition / version: Edition 1 (2001).
• Number of pages: 49 pages.

Scope

Specifies the application‑interpreted construct for geometrically bounded surface modelling within the STEP framework. In scope are representation and interpretation rules for 3D points and curves, curves on surfaces (pcurves), elementary and intersection curves, polylines, elementary surfaces and common swept and sculptured surfaces, trimming and composition of surfaces, replication, and 3D offsets. Out of scope are unbounded geometry, self‑intersecting geometry, 2D cartesian geometry, replication of points and explicit topological entities.

Key topics and requirements

• Definition of an application‑interpreted construct (AIC) for geometrically bounded surface models within ISO 10303.
• Representation and parameter‑space treatment of curves and pcurves (curves on surfaces).
• Support for elementary curves (line, circle, ellipse, parabola, hyperbola) and intersection curves.
• Support for elementary surfaces (plane, cylinder, cone, torus, sphere) and swept/sculptured surfaces.
• Rules for trimming, composition, replication and 3D offsets of curves and surfaces.
• Conformance guidance for integrating these constructs into STEP application protocols and implementations.

Typical use and users

Used by CAD and PLM vendors, implementers of STEP translators, system integrators, and organizations requiring neutral exchange or archiving of surface‑based geometric definitions (e.g., manufacturing, tooling, aerospace, automotive suppliers). Also referenced by standards and tool developers building AP implementations or converters for STEP data. Practical usage context and adoption of STEP application parts are discussed in STEP overview resources and by national labs and tool providers.

Related standards

Part of the ISO 10303 (STEP) family; related application protocols and parts include foundational parts (e.g., Parts 11, 21 for EXPRESS and STEP-file formats) and higher‑level APs such as AP203/AP214 (historical CAD APs) and the modern AP242 managed model‑based 3D engineering protocol. Implementers typically map or integrate AP507 constructs with other geometric and AP definitions in the STEP series.

Keywords

ISO 10303, STEP, Part 507, application interpreted construct, geometrically bounded surface, pcurve, trimming, swept surface, elementary surfaces, CAD data exchange, product data representation.

FAQ

Q: What is this standard?

A: ISO 10303‑507:2001 is a part of the STEP family that defines an application‑interpreted construct for representing geometrically bounded surface models to support neutral product data exchange.

Q: What does it cover?

A: It covers the interpretation and modelling rules for 3D points and curves, curves defined in surface parameter space (pcurves), elementary and intersection curves, polylines, elementary surfaces (plane, cylinder, cone, torus, sphere), swept and sculptured surfaces, trimming and composition, replication and 3D offsets — and explicitly excludes unbounded or self‑intersecting geometry and 2D cartesian geometry.

Q: Who typically uses it?

A: CAD/PLM software vendors, STEP implementers and integrators, manufacturing and engineering organizations exchanging or archiving surface‑based geometry, and standards/tool developers building STEP‑compliant converters and validators.

Q: Is it current or superseded?

A: ISO lists ISO 10303‑507:2001 as published (Edition 1, 2001) and the entry has been subject to regular systematic review; the version was confirmed in recent ISO reviews (confirmed during the review cycle documented through 2024), so the 2001 edition remains the current published edition unless ISO publishes a replacement.

Q: Is it part of a series?

A: Yes — it is one part of the ISO 10303 (STEP) series of standards (many parts including data modelling language parts, format parts and numerous application protocols such as AP203, AP214 and AP242). AP507 is an application‑interpreted construct within that broader STEP architecture.

Q: What are the key keywords?

A: Geometrically bounded surface, pcurve, trimming, swept surface, elementary surface, STEP, ISO 10303, application interpreted construct, CAD data exchange.