Spindle mechanism and spindle cooling system with same

The utility model provides a main shaft mechanism and a main shaft cooling system with the same, and the main shaft mechanism comprises a stator inner sleeve; the stator outer sleeve is arranged on the outer side of the stator inner sleeve in a sleeving mode, the stator outer sleeve and the stator inner sleeve are arranged at intervals, and a closed containing cavity is formed between the stator outer sleeve and the stator inner sleeve; and the cooling pipe is arranged around the stator inner sleeve and is located in the accommodating cavity, so that a refrigerant flows into the cooling pipe to cool the stator inner sleeve, and the problem that the main shaft cannot be directly cooled by the refrigerant in the prior art is solved. 本实用新型提供了一种主轴机构及具有其的主轴冷却系统，其中，主轴机构包括：定子内套；定子外套，套设在定子内套的外侧并与定子内套间隔设置，定子外套与定子内套之间构成密闭的容纳腔体；冷却管，冷却管环绕定子内套设置并位于容纳腔体内，以使冷媒流入冷却管内对定子内套进行冷却，以解决现有技术中的冷媒无法直接冷却主轴的问题。