Abstract:
The CNC industry, is experiencing a revolutionary change in its fundamental data model and the way to drive the machine tools using this new data model. This data model is called STEP-NC. The purpose of this research is to investigate an intelligent STEP-NC controller, which involves a STEP-NC Parser and a motion controller. The STEP-NC Parser is programmed in VC++ in conjunction with the STIX library. All STBP-NC entities such as Workplan, Workisteps, maehining features, operations and machining strategy, can be extracted by the Porser, The motion controller consists of a Digital Signal Processor (DSP) and a Complex Programmable Logic Device (CPLD). The DSP is responsible for tool path programming and servo controls whereas CPLD controls, the position of an axis as well as other interfaced devices. This STEP-NC controller has the advantages of being modular open, simple in structure, bi-directional in data flow and feature-based.
