| 摘要 |
The device and the method relate to tool-holding heads which can move along an axis. …<??>The device comprises a tool-holding head (1) which is displaced along a guide means (B). A pulley (8), mounted so as to rotate freely on a shaft (18) integrally connected to the tool-holding head, is displaced along a tensioned cable (6). An operating handle (15) can be brought into engagement with the pulley (8) in order to drive it, or can be moved away therefrom so as to be free in rotation on the shaft (18). …<IMAGE>… |
