ISO 14649-13:2013

Overview

ISO 14649-13:2013 defines the technology-specific process data model for wire electrical discharge machining (wire-EDM) as part of the ISO 14649 family for CNC device control. Used together with ISO 14649-10 (General process data), it specifies the interface and data elements exchanged between a programming system (CAM or shop-floor programmer) and a computerized numerical controller (CNC) for wire-EDM machines. The standard provides EXPRESS schemas, graphical views and examples to support consistent data encoding and interoperability.

Key topics and technical requirements

• Scope and interface: Specifies wire-EDM–specific data elements needed to describe processes to a CNC; not intended for turning, grinding or non-EDM technologies.
• Data model & schema: A dedicated EXPRESS schema (wire_edm_schema) referenced from ISO 14649‑10. Annexes include EXPRESS listings and EXPRESS‑G diagrams.
• Manufacturing features: Technology-specific feature classes derived from machining_feature, including:
  • general_path (toolpath-driven features)
  • general_single_path (single curve; optional slope with default 0°; transition types)
  • general_twin_path (two synchronized curves; depth attribute ignored)
  • general_path_pocket and subtypes (closed and open pockets, holes/bosses)
  • ruled surfaces for accurate wire offset and normal vectors
• Operation entities: Definitions for wire‑EDM machining operations, operation parameters and machining strategies tied to the CNC interface.
• Encoding & examples: Guidance to encode data using ISO 10303‑21 (STEP) and EXPRESS (ISO 10303‑11). Informative examples (Annex C/D) illustrate practical files.

Applications and users

Who benefits:

• CAM software developers - to generate standardized wire‑EDM process data and post‑processors.
• CNC/machine tool manufacturers - to implement compatible controller interfaces and import process files.
• Automation and integration engineers - for shop‑floor system integration and automated data exchange.
• Tooling designers and job shops - to ensure repeatable, machine‑independent process descriptions for wire‑EDM jobs.

Practical uses:

• Exchanging wire‑EDM toolpaths, pockets and feature definitions between CAD/CAM and controllers.
• Improving interoperability across CAM systems and EDM machines.
• Supporting automation, off‑line programming, and standardized machine data archival.

Related standards

• ISO 14649-10 - General process data (required companion)
• Other ISO 14649 parts (e.g., Part 11 milling, Part 12 turning, Part 14 sink‑EDM)
• ISO 10303 (STEP) series - EXPRESS language (ISO 10303‑11) and file encoding (ISO 10303‑21)

Keywords: ISO 14649-13, wire-EDM, process data, CNC data model, CAM to controller interface, EXPRESS schema, STEP encoding, machining features.