| 摘要 |
PCT No. PCT/EP94/00843 Sec. 371 Date Oct. 3, 1995 Sec. 102(e) Date Oct. 3, 1995 PCT Filed Mar. 17, 1994 PCT Pub. No. WO94/23485 PCT Pub. Date Oct. 13, 1994Motor spindle cooled by coolant for a machine tool comprising a workpiece spindle and a drive motor having a rotor surrounding the workpiece spindle, concentric with the workpiece spindle and connected to the workpiece spindle, and a stator surrounding the rotor and concentric with the rotor, and comprising a spindle housing accommodating the drive motor and coolant channels surrounding the stator, at least one inner coolant channel enclosing the stator at least to a major extent and at least one outer coolant channel similarly enclosing the stator at least to a major extent being provided-in section through the three-phase motor perpendicularly to the spindle axis-for decoupling the spindle housing thermally from the drive motor, the outer coolant channel lying-in relation to the spindle axis-outside the inner coolant channel in the radial direction, and a coolant inlet being connected to a first end of the outer coolant channel, the second end of the outer coolant channel to a first end of the inner coolant channel, and the second end of the inner coolant channel to a coolant outlet.
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