Abstract
Super precise is one of the primary requirement of the high-speed motorized spindle. Temperature distribution, speed control loading characteristics, precision maintenance, liberation intensity and circumgyration error are not only the key demand of motorized spindle's capability but also an important index to evaluate it's performance. The paper has detailed described the main structure of motorized spindle. A 3D motorized spindle model was established and carried out thermal analysis to study the heat generation and heat transfer. Under the ANSYS finite element software circumstance, the temperature field distribution and the temperature rise condition for motorized spindle are researched. From the result, we can find the front bearing has a higher temperature than that of back bearing. The maximum temperature of inner ring is bigger than that of outer ring. The results contribute to selection of appropriate bearing for motorized spindle system.
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