A Study on Integrated Process Planning and Scheduling System for Holonic Manufacturing System

(1)板材零件CAD系统的开发：根据IGES和/或DXF格式提供的板材CAD数据的输入信息，开发了一套用于生成注塑模和压铸模板材钻孔和铰孔加工的NC数据的CAM系统。钻削和铰削工艺的加工工艺数据被调查并存储在加工工艺数据库中。HMSAn分布式调度系统的开发采用面向对象的建模技术来表示制造系统的整体组成部分，包括零件和制造资源。开发了一个面向对象的仿真系统来表示和仿真合弄制造系统中的实时调度过程。从制造资源的总体可制造性和对故障的适应性两个角度对实时调度决策规则进行了仿真验证。(3)系统的验证

(1) Development of CAM system for plate parts.A CAM system has been developed to generate NC data for drilling and reaming processes of the plates of the injection molds and the die-casting dies, based on the input information about the CAD data of the plates given in the IGES and/or DXF formats. The machining technology data for the drilling and the reaming processes are investigated and stored in the machining technology database. The database gives the relationships between the geometric and technological information about the holes to be machined and the machining information about the machining processes, such as the tools, the cutting conditions and the cutter location data.(2) Development of distributed scheduling system for HMSAn object-oriented modeling technique is adopted to represent the holonic components of the manufacturing systems including workpieces and manufacturing resources. An object-oriented simulation system is developed to represent and to simulate real-time scheduling processes in the holonic manufacturing system. A set of simulation is carried our to verify the decision rules for the real-time scheduling from the viewpoint of the total make-span and the adaptability to the failure of the manufacturing resources.(3) Verifications of the developed system.The systems developed in the research have been verified from the viewpoint of both the process planning and scheduling in the holonic manufacturing systems