一种基于宏指令的数控加工进度采集方法

It is difficult to collect the machining progress information accurately in real-time referred to the numerical control (NC) machining of mould and large-size workpieces, because their machining periods are long and usually only a single workpiece is machined. In order to deal with this problem, an automatic collecting method of machining progress information for different NC systems based on the macro instructions is proposed and a collecting system for the workpieces of NC machining is developed in this paper. This method defines the rules of embedding the NC machining progress information, it inserts the machining progress information into the NC file according to the rule through the external communication macro instruction before machining, then a new NC file where the machining progress information is recognizable for the collecting system is generated; the machining progress information of workpieces is uploaded to local monitoring terminal by machine tools when machining, then it is displayed and uploaded to the enterprise database which the relative manufacturing system could access after that it is processed by the collecting system. It shows that the method of NC machining progress information is accurate and practical through the experiment．