| 摘要 |
A machine tool includes a turret having a plurality of machine tool spindles for carrying individual cutting tools. The turret rotates in a horizontal plane about a vertical column and is supported on the column by a yoke having yoke arms projecting through slots in the column. A ball nut assembly mounted on the yoke and rotated by a motor driven screw provides vertical height adjustment of the turret and the tool spindles. The turret is selectively indexable about the vertical axis of the column to position the appropriate tool spindle in a machining position. A spindle drive motor carried by the yoke and located within the column is moved in the direction of tool feed to engage a coupling on the selected indexed tool spindle and rotate the tool carried by the spindle. Spindles can be employed with their own feed and drive independent of the turret feed and drive. The column and turret are supported on a saddle which is movable on horizontally extending ways by a lead screw for cutting feed. The work piece is carried on a cross slide for movement along a horizontal axis at right angles to the direction of tool and turret feed. The work piece is also rotatable about a vertical axis. |
