| 摘要 |
An automatic lathe ( 10 ) is provided with a first spindle ( 14 ) having an axis of rotation ( 14 a), a first tool rest ( 18 ) capable of holding a plurality of tools ( 22 ) in a parallel arrangement, a second tool rest ( 20 ) capable of holding a plurality of tools ( 22 ) in parallel arrangements in a first row and second row exhibiting mutually different nose orientations, and a second spindle ( 16 ) having an axis of rotation parallel to the axis of rotation of the first spindle and capable of being located facing the first spindle, in such a manner as to be centrally carried on a lathe bed ( 12 ). The first spindle can move linearly along a first control axis parallel to its axis of rotation. The first tool rest can move linearly along a second control axis perpendicular to the first control axis. The second tool rest can move linearly along a third control axis perpendicular to the first control axis and a fourth control axis parallel to the first control axis. The second spindle can move linearly along a fifth control axis parallel to the third control axis and a sixth control axis parallel to the first control axis. A control unit ( 106 ) enables simultaneous performance of first machining work relating to the first spindle by a desired tool selected at the first tool rest, second machining work relating to the first spindle by a desired tool selected from the first row at the second tool rest, and third machining work relating to the second spindle by a desired tool selected from the second row at the second tool rest.
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