| 摘要 |
A CNC lathe (1) has a control device (4) for enabling manual operation of carriages (5, 6) which are movable in mutually orthogonal directions. During manual operation, the control device (4) and the longitudinally moving carriage (5) are moved in tandem. However, for safety reasons, the control device (4) may be disengaged from the carriage (5) such that rapid movement of the carriages under the control of a CNC unit (22) is possible. The control device (4) has rollers (24) disposed in guideways (8) carried by a fixed support (7) screwed to the lathe bed (35). The fixed support (7) similarly carries guideways (27) for slideably supporting movable covers (3). A lever (11) selectively engages or disengages the control device (4) and the carriage (5). Upon engagement of the control device (4) and the carriage (5), an inductive proximity switch (17) is actuated to prevent rapid traverse of the carriages. <IMAGE> |
