A Study of Integrated CAM system for Flexile Manufacturing System

本文研究了FMS集成CAM系统的基本结构，本文研究了柔性制造系统（FlexibleManufacturingSystem，FMS）的特点，开发了FMS的层次化CAM系统，并进行了实例验证，目前还没有一个集成的CAM系统能够实现加工顺序的自动确定、刀具选择、NC数据生成、在给定几何模型和加工知识的条件下，对各加工站进行作业分配和调度，首先，为了开发集成CAM系统，研究了加工的详细过程，提出了一种可作为CAD/CAM系统接口的几何模型--单元构造几何模型（CCM）。提出了从CCM实体模型到由部分可加工曲面组成的曲面模型的转换过程，将加工过程看作是时间序列和积分运算，将工艺设计看作是由给定的几何模型和加工知识生成严重局部加工曲面的逆向推理过程，提出的递阶CAM系统使得对孔、2-D轮廓面、3-D曲面进行分类，并以交互方式确定刀具和生成NC数据，最后给出了应用该集成CAM系统进行加工的结果。

In this research, basic structure of integrated CAM system for FMS(Flexible Manufacturing System)has been investigated, and a hierarchical CAM system for the FMS was developed, and some examples were demonstrated.Until now, we do not have an integrated CAM system which is able to carry out the automatic determinations of machining sequence, selection of cutting tool, NC data generation, job allocation for each machining station and scheduling under processing the given geometric model and machining knowledge.At first, in order to develope the integrated CAM system, a detail process of maschining was investigated, and a cell constructed geometric model(CCM) as a geometric model which is able to play a role of interface between CAD and CAM systems, was proposed. And conversion procedure from the CCM solid model to a surface model which consists of some partial machinable surfaces was also proposed.MAchining process is seemed as the time series and aqumulated operation, on the contrary, process planning is also seemed as the inverse reasoning process which generates the serious partial machining surfaces from the given geometric model and machining knowledge.The proposed hierachical CAM system makes it possible to classify the hole, 2-D contouring surface, 3-D sufaces, and to determine the using cutting tools and generation NC data in an interactive way.Finally, some processing results which are processed by the proposed integrated CAM system, are demonstrated.