Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 13, 2017 - November 17, 2017
Performance of the spindle of the ultra-precision machine tools influences the machining accuracy significantly. Thus, the ultra-precision machine tools use the spindle supported by hydrostatic bearings, in general, aero pressure bearings. A spindle supported by water hydrostatic bearings was developed for ultra-precision machine tool. This paper describes the temperature change of the developed spindle under non-spindle rotation. For example, the water temperature at the upstream and downstream of spindle and the temperature of the spindle body are measured. In addition, the temperature change of the designed spindle is investigated using introduced simplified lumped parameter model of the spindle system. Comparing the experiments and calculations verifies that the introduced model is capable of predicting the temperature increase of the spindle. In addition, the paper indicates that the effectiveness of the water hydrostatic bearings to achieve better thermal stability of the spindle.
