| 摘要 |
To provide a machine tool in which positioning accuracy of a ram is ensured, realizing improved machining accuracy. A cylindrical ram 14 supporting a spindle 6 is inserted in a ram guide hole 13 a formed in a cross slide 13 , the ram 14 has supported surfaces 14 d , 14 d in a V-shape formed on a lower side of an outer circumferential surface thereof, and the supported surfaces 14 d are placed on supporting surfaces 22 a , 22 a in a V-shape formed on an inner circumferential surface of the ram guide hole 13 a of the cross slide 13 , so that a Z-axis direction position of the ram 14 is automatically aligned.
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