| 摘要 |
PROBLEM TO BE SOLVED: To provide a lathe which can achieve drilling from a shallow hole to a deep hole with high accuracy without increasing kinds of sleeve holders.SOLUTION: In a lathe 1 in which a sleeve holder 30 for fixing a sleeve S1 holding drilling tools T1, T2 is attached to a cutter holder body (table 20), the sleeve holder 30 comprises a holder member 40 for fixing the sleeve S1, a frame member 50 attached to the cutter holder body (table 20), holder fixation means 60 which can fix the holder member 40 for fixing the sleeve S1 holding the drilling tools T1, T2 to the frame member 50 at different positions P1 to P3 in an axial direction D1 of the drilling tools T1, T2. |
