| 摘要 |
The screwing unit comprises a detachable screwing member 3 driving a screwdriver 6, a body 1, a screw-guiding nose 9 disposed along the axis of screwing I-I, and a feed tube 27 which can move laterally. The guide nose 9 can move translationally along the screwing axis with respect to the body 1, the feed tube 27 can move laterally by rotation about an axis II-II and the screwing member 3 can move translationally along the screwing axis I-I and rotationally about the axis II-II. During the advance of the screwdriver, the feed tube 27 moves away progressively. After the screwing member 3 has moved back, the latter moves away slightly, by rotation, bringing closer together the feed tube 27 and the device for loading the screw 8. <IMAGE>
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