Developing a virtual machining model to generate MTConnect machine-monitoring data from STEP-NC

Seung Jun Shin, Jungyub Woo, Duck Bong Kim, Senthilkumaran Kumaraguru, Sudarsan Rachuri

Research output: Contribution to journalArticle

25 Scopus citations


The ability to predict performance of manufacturing equipment during early stages of process planning is vital for improving efficiency of manufacturing processes. In the metal cutting industry, measurement of machining performance is usually carried out by collecting machine-monitoring data that record the machine tool’s actions (e.g. coordinates of axis location and power consumption). Understanding the impacts of process planning decisions is central to the enhancement of the machining performance. However, current methodologies lack the necessary models and tools to predict impacts of process planning decisions on the machining performance. This paper presents the development of a virtual machining model (called STEP2M model) that generates machine-monitoring data from process planning data. The STEP2M model builds upon a physical model-based analysis for the sources of energy on a machine tool, and adopts STEP-NC and MTConnect standardised interfaces to represent process planning and machine-monitoring data. We have developed a prototype system for 2-axis turning operation and validated the system by conducting an experiment using a Computer Numerical Control lathe. The virtual machining model presented in this paper enables process planners to analyse machining performance through virtual measurement and to perform interoperable data communication through standardised interfaces.

Original languageEnglish
Pages (from-to)4487-4505
Number of pages19
JournalInternational Journal of Production Research
Issue number15
StatePublished - 2016 Aug 2


  • MTConnect
  • metal cutting
  • performance measurement
  • power consumption
  • simulation model

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