Abstract
In this paper, the author applies the gray system theory to build the thermal error model and analyze thermal error of precision machine tools. This paper mainly applies the gray system theory, cutting processing experiment and analysis of guide rail, unloading beam modal, and spindle and so on to study the thermal error of precision machine tools. The experiment shows that the accuracy of GM (0,4) and that of GM (1,4) models is relatively high. By referring to the cutting parameters, the analysis data of the guide rails, unloading beam modal and the spindle, we learn that the prediction accuracy of the model GM (X, N) can be improved by 40% at the most.
