关键词: 在线检测, 实时监测, 数控加工, 产品模型数据交换标准&mdash, 数字控制

Abstract: To implement integrated online inspection and monitoring in STandard for the Exchange of Product model data-Numerical Control (STEP-NC) compliant closed-loop manufacturing scenario,a prototype of CNC system was proposed.Relevant STEP-NC entities were defined for transferring inspection and monitoring information.A CNC system composed open architecture platform,probe system,sensors system and data acquisition card,which could interpret and execute STEP-NC files with online inspection and machining process monitoring tasks directly.The inspection results were combined with input STEP-NC files and then exported.Real time extension was adopted to develop the driver and threads for data acquisition and monitoring.Case studies were conducted to verify the proposed CNC system.The experiment results indicated that the CNC system was able to machine and inspect the part while monitoring the machining process in real time according to input STEP-NC files.

Key words: online inspection, real time monitoring, CNC machining, standard for the exchange of product model data-numerical control