MACHINE TOOL WITH TOOL CHANGE DEVICE

摘要

A machine tool is provided with an automatic tool change device for permitting the same to perform a variety of machining operations on a workpiece. The tool change device comprises a tool storage magazine installed on the floor for removably storing diverse tools and a carriage mounted on an upstanding column of the machine and carrying a tool holding device thereon. The carriage follows the movement of a spindle head receiving a spindle therein so that a tool change operation can be effected between the tool holding device and the spindle by a main transfer arm immediately following a machine operation. Means are also provided for rendering the following movement of the carriage inoperative so that a tool change operation by a sub-transfer arm may be performed between the tool holding device and the tool storage magazine during the machining operation.