| 摘要 |
The head (11) is provided with a tool carrying spindle (12) and can be rocked with respect to a frame (8) on an axis inclined 45 DEG , to orientate the spindle in a vertical position or in an horizontal position. To effect facing works, boring works into holes of large diameter and conical boring works, a tool holder (22), is driven by the spindle (12). The holder (22) carries a device (22') for radially adjusting the tool (24), controlled by an auxiliary driving unit (14) located on the frame (8) parallel to the spindle and adapted to be clutched to the adjusting device when the tool holder is clutched to the spindle, the clutching not being affected by head swivelling. The spindle (12) is driven via gears from a hollow shaft in the head, a further shaft inside the first shaft providing, via worm gearing, the input to the auxiliary driving unit (14). Both shafts have joints allowing for axial movement of the head during uncoupling from the frame when being swivelled. <IMAGE>
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