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

(1)板材零件CAM系统的开发。基于IGES和/或DXF格式给出的板材CAD数据输入信息，开发了一个CAM系统，用于生成注塑模具和压铸模具板材的钻孔和铰孔过程的NC数据。对钻孔和扩孔工序的加工工艺数据进行了研究，并将其存储在加工工艺数据库中。该数据库给出了待加工孔的几何信息和工艺信息与加工过程的加工信息（如刀具、切削条件和刀具位置数据）之间的关系。(2)采用面向对象的建模技术对工件和制造资源等制造系统的整体组成部分进行建模，开发了面向对象的分布式调度系统。开发了一个面向对象的仿真系统来表示和模拟全息制造系统中的实时调度过程。从制造资源的总制造跨度和对故障的适应性角度，对实时调度的决策规则进行了仿真验证。(3)对开发的系统进行验证。从全息制造系统的工艺规划和调度角度对所开发的系统进行了验证

(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