| 摘要 |
The device for controlling the facing of a bar on an automatic lathe for machining bars, comprises a bar-pusher (1) actuated by a traction element (6) to cause the advancement of a bar towards the lathe (3), a carriage (13, 14) slideable on a guide (15) parallel to the traction element (16), a hook (20) for intercepting the carriage (13, 14) in a bar loading position, a clutch (7) adapted to keep the bar-pusher (1) rigidly associated with the carriage (13, 14) when the carriage (13, 14) is free to slide on the guide (15) and to allow the bar-pusher (1) to move with respect to the carriage (13, 14) when the carriage (13, 14) is intercepted. The hook (20) is controlled by a sensor (21) adapted to detect the end of a bar to be machined at the entry point of the lathe (3) and to control the hook (20) during free sliding of the carriage (13, 14). A further sensor (23) is provided to actuate the bar-pusher (1) in the bar facing position. |
