| 摘要 |
The machine tool spindle (1) and its bearings (4, 20) in the machine tool head (3) are cooling by a forced air stream, (8, 9) whose vol. is proportional to the spindle sped, with the air stream originating in the ambient atmos. air. Pref. turbine rotors (44, 24, 21) are associated with the spindle which suck at one side the ambient air and eject it at the other one. The components (2, 8, 22, 4, 20) to be cooled are engaged by the cooling air stream along a duct (7), which has air outlet ports (17). Longitudinal ducts may be formed between the machine tool head, a sleeve (2) and the spindle. ADVANTAGE - Direct discharge of the heat generator by the spindle rotation in proportion to its speed. |
