基于STEP-NC的车削工艺在线规划系统的研究

Research on Turning Process On-line Planning System Using the STEP-NC Data Model

基于STEP-NC基本思想,提出了由离线规划、在线规划、实时规划组成的工艺规划分层模式,并将数控系统内的在线规划问题划分为工艺路线验证与优化、工步工艺参数优化、刀轨规划与仿真三部分。以基于知识的CAPP技术为基础,讨论了工艺路线验证与优化方案,建立了面向STEP-NC车削数据模型的工艺在线规划系统并加以实践。

In this paper, Process planning was grouped according to the basic thought of STEP-NC, into three levels, i.e. off-line planning, on-line planning and real-time planning. The on-line process planning issues involved in the NC system was divide the validation and optimization of process planning route, cutting parameters optimization of workingstep, toolpath planning and simulation. Based on the decision-making technique of CAPP, discussed the way of the validation and optimization of process planning route, set up a turning on- line process planning system using STEP-NC data model and take into the fulfillment.