关键词: STEP-NC, 闭环加工, 集成工艺规划, 高层过程控制, 在机检测

Abstract: Based on studies of the data flow requirements and STEP-NC data model of closed-loop machining system, a STEP-NC based Closed-Loop Machining (CLM)system framework as well as a high-level process controller to realize STEP-NC program execution and bi-directional data loop was proposed. The approaches to four key techniques in CLM, including integrated process planning, post-process of STEP-NC program, feedback and association of measurement data, and process improvement and optimization were researched and implemented. A system prototype of CLM was developed, and a case study by STEP-NC test part indicated that the feasibility and validity of the proposed CLM system based on STEP-NC.

Key words: STEP-NC, closed-loop machining, integrated process planning, high level process control, on-line inspection