| 摘要 |
An NC lathe 1 comprises a bed 5 , a headstock 10 provided on the bed 5 , a main spindle 11 supported on the headstock 10 so as to be rotatable around the axis thereof, a rotation drive device for rotating the main spindle 11 , a stationary frame 15 formed in a rectangular frame shape and fixed to the upper face of the bed 5 , a movable frame 16 formed in a rectangular frame shape and provided so as to be movable in the Z-axis direction with respect to the stationary frame 15 , a saddle 17 provided so as to be movable in the X-axis direction with respect to the movable frame 16 , a quill 18 accommodated inside the accommodation hole 17 a in the saddle 17 and provided so as to be movable in the Y-axis direction, and a tool rest 20 supported on the quill 18.
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