Patent ID: 10168689

Abstract:
A machine tool (1) includes a tool information storage (9) storing therein used tool information for, when an NC program execution part (5) executes an NC program, specifying a tool used for machining, and a magazine operation panel (18) includes an announcement part (18b) for announcing an alarm to an operator. When receiving an operation signal from an input part (18a) while the NC program execution part (5) is executing an NC program, a tool change control part (11) checks the used tool information stored in the tool information storage (9), and in the case where a tool held by a tool pot (17a) corresponding to the operation signal is not used for machining, moves the tool pot (17a) to a tool attachment/detachment position (17c), and in the case where the tool is used for machining, causes the announcement part (18a) to announce an alarm indicating that it is unavailable.