High speed machining is the core technology that influences the performance of machine tools, and the high speed motor spindle is widely used for the high speed machine tools recently. The important problem in this spindle is to reduce and minimize th...
High speed machining is the core technology that influences the performance of machine tools, and the high speed motor spindle is widely used for the high speed machine tools recently. The important problem in this spindle is to reduce and minimize the thermal effect by motor and bearing. This paper presents the thermal characteristics analysis of a high speed motor spindle system consisted of angular constant ball bearings and built-in motor with oil-jet lubrication. The analysis of thermal characteristic of spindle is performed according to the oil-jet lubrication by using finite element method. This result can be applied to the design and manufacture of the high speed spindle