Research on Data Acquisition and Analysis of Circular Tests on Numerical Control Machine Tools Based on NC System

According to the characters of openness, modularization and interface of the NC control SINUMERIK 840D on machine tools, we use MPI, DDE to communicate/data-exchange with SINUMERIK 840D. And a data acquisition system for circular tests on NC machine tools is designed and developed. Based on ISO 230-4-2005 standard for circular tests, some evaluation parameters of circular tests is introduced. And it is verified tHough simulated data and real data.