Feature-based process planning for interoperable step-NC manufacture

With the progress on STEP-NC standardization and implementation, STEP-NC-oriented computer systems in the process chain require evolution to support the STEP-compliant planning and manufacture. This paper explores process planning (CAPP/CAM) based on STEP-NC and presents a CAPP prototype system (PPS) in the light of future interoperable planning and manufacture. The PPS has been developed using STEP-NC features throughout the planning process and applies a two-stage strategy for STEP-NC part program generation, namely general workplan generation and specific workplan generation. The work is verified through use of case study components.