基于STEP-NC的非线性加工工艺规划研究  

Research on Non-linear Process Planning in STEP-NC

作　　者：黄华[1] 李爱平[1] 

机构地区：[1]同济大学,上海200092

出　　处：《中国机械工程》2009年第2期171-175,共5页China Mechanical Engineering

基　　金：国家863高技术研究发展计划资助项目(2007AA042002);上海市"十五"重点科技攻关项目(041111001)

摘　　要：研究了在STEP-NC环境下进行非线性工艺设计的方法和过程。首先分析了STEP-NC文件的结构组成及其支持非线性工艺的可行性;然后从STEP-NC文件中提取工艺信息,利用加工流程图(process sequence graph,PSG)表达加工工艺;基于PSG中包含的信息结合图搜索算法,在离线规划中选择优化的工艺路径;在在线规划中根据加工现场资源的变化情况实时调整工艺路径;最后将PSG中的离散工步连续化为可行的控制方案。通过一个实例零件对所提技术和算法进行了说明,为在STEP-NC环境中进行非线性工艺规划提供了完整的思路。The method and course of non-linear process planning（NLPP） used in STEP-NC was presented,the structure of STEP-NC file and the feasibility of NLPP in STEP-NC was analysed at first,then the technology information was extracted from the STEP-NC file, and PSG was used to represent the NLPP. With the PSG and graph search algorithm the optimized process path was selected off-line, the path was adjusted on-line according to resource changing. The discrete working steps were serialized to be executable workplan. An example was used to illustrate the algorithm, the complete method of NLPP in STEP-NC was presented herein.

关 键 词：非线性工艺设计 加工流程图 在线规划 工艺路径 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TP332.3[自动化与计算机技术—控制科学与工程]