| 摘要 |
A workpiece loader and unloader for use in conjunction with a machine tool adapted to perform a machining operation on a workpiece. A workpiece loader and unloader includes a pair of extensible workpiece grasping members carried by a carriage assembly adapted to reciprocate between a first position over the machine tool and a second position over a workpiece conveying apparatus. One of the workpiece grasping members is utilized to grasp and unload finished workpieces from the machine after they have been machined and the other of the workpiece grasping members is adapted to grasp and load unfinished workpieces in the machine tool prior to the machining operation. The workpiece grasping member utilized to load an unfinished workpiece into the machine is extensible along a path intersecting and substantially perpendicular to the axis about which the workpiece is rotated in the machine and the workpiece grasping member utilized to unload a finished workpiece from the machine is extensible along a path which is angularly disposed with respect to the first-mentioned path so that when a workpiece loader and unloader are alternately extended the workpiece grasping member of each is extended to substantially the same point thereby to effect unloading and loading of the workpieces from and into the machine tool and the workpiece conveying apparatus.
|
