| 摘要 |
PROBLEM TO BE SOLVED: To provide a spindle device cooling structure in which the entire device can be miniaturized while maintaining the rigidity of a spindle, and a bearing member can be easily fitted into a cover. SOLUTION: The spindle device cooling structure is provided with a bearing member to support a spindle to be rotated, a housing to store the bearing member, a cooling medium groove which is formed in an exposed manner to an outer surface of the housing to allow cooling medium to pass, and a cover which covers an outer surrounding of the housing, and closes the cooling medium groove to form a cooling medium passage. COPYRIGHT: (C)2004,JPO&NCIPI
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