| 摘要 |
A machine tool having an automatic tool changing device includes a tool magazine upon which a plurality of cutting tools, having recesses for engaging drive keys upon a drive spindle, are mounted, a spindle head mounting the drive spindle which can be rotationally stopped by a braking device, first detecting means which detects the angular position of the stopped drive spindle, second detecting means which detects the angular position of a tool to be used for a subsequent machining operation and which is supported upon an arm device, and control means which serves to rotate the tool upon the arm device in accordance with the differential between output signals of the first and second detecting means so as to attain the desired tool exchanging operation through engagement of the drive keys upon the drive spindle and the recesses upon the tool being exchanged and inserted within the drive spindle.
|
