关键词: 电主轴, 冷却流道, 结构参数, 温度场

Abstract: The cooling channel structure design and cooling conditions of the motor spindle have a significant impact on its temperature rise performance. As a common motor spindle cooling channel structure type, the structural parameters of the flooded channel include the flooded through-flow area, the flow gap, the number of notch columns and the notch width of the channel, etc. A fluid-solid coupling simulation model of the motor spindle of the flooded cooling channel was established to study the influence of the above geometric parameters on the temperature field of the motor spindle. The results show that under the same cooling conditions, a smaller flow gap, a smaller notch width, a fewer number of notch columns of the channel, and a flooded through-flow area equal to inlet area of the cooling channel lead to smaller temperature rise of the spindle, that was a better the cooling effect. The research provide theoretical guidance for the design of structural parameters of the flooded cooling channel of motor spindle.

Key words: motor spindle, cooling channel, structural parameters, temperature field