2011•Computer Integrated Manufacturing SystemsRequires access

Research and implementation of closed-loop machining technology based on STEP-NC

Lei Pei

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.

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Key concepts: Machining, Process (computing), Computer science, Closed loop, Controller (irrigation), Key (lock), Loop (graph theory), Control engineering