| 摘要 |
Such a device (1) consists of an adaptor (22), accommodating the drilling tool (15) and connected to a drilling machine in such a way as to transmit torque, and a bearing bush (9) which is fastened in a holder of a column and in which a sleeve (10) firmly connected to the drilling machine (12) is accommodated and mounted in such a way as to be rotatable and pivotable via a pivot bearing. …<??>In order to obtain positive deflection with this device, a lever (35) is attached to the drilling machine, the end (34) of which lever (35) is connected to a crank (31). The lever can be deflected using the crank (31) and can be moved in a circle about its centre axis by at least one pin (37a) bearing on the peripheral surface of a cam plate (39) connected to the column, which pin (37a) is arranged on the crank. …<IMAGE>… |
