A framework for an intelligent CNC and data model

Abstract

In this paper, we present a conceptual framework for designing and implementing an intelligent CNC system. The architecture and functional modules are derived from requirement analysis, and they are designed to have a thinking capability before, during, and after the execution of the manufacturing task, so that the assigned task can be effectively executed while dealing with unexpected changes occurring on the shop floor. Also, the data model for supporting the architecture is addressed based on the STEP-NC data model or ISO 14649. Specifications of databases and the operational scenario together with implementation issues are provided. The framework presented can be used as a paradigm for STEP-compliant CNC.