Thermal Error Modeling Analysis and Compensation Based on the Grey System Theory on Two Turntable 5-Axis NC Machine Tools

Abstract

In this paper a novel concept of thermal error mode analysis is proposed in order to develop a better understanding of the thermal deformation on two turntable 5-Axis NC machine tools. The correlation analysis theory is used as finding the correlation between temperature data and thermal errors. Four key temperature points of two turntable 5-Axis NC machine tools were obtained based on the temperature field analysis. A novel thermal error model on the basis of grey system theory was proposed. The experiments proved that there was averagely a 40% increase in machine tool precision.