Machine tool

A machine tool at least including:

• a spindle arranged in a machining area and configured to detachably hold a tool;
• and
• a cover body formed by at least a ceiling cover and a side wall cover and surrounding the machining area to separate the machining area from outside, wherein:
• the machine tool includes:
• a tool stocker configured to store the tool to be attached to the spindle;
• a tool conveyance mechanism having a tool holding unit configured to detachably hold the tool and configured to move the tool holding unit along a predetermined path, wherein the tool conveyance mechanism is arranged to be located above the ceiling cover;
• and
• a conveyance control unit configured to control the tool conveyance mechanism;
• the tool conveyance mechanism is configured to move the tool holding unit at least to a tool change position for transferring the tool between the tool holding unit and the spindle, a stocker position for transferring the tool between the tool holding unit and the tool stocker, and a position for work set as a position for a worker to perform work on the tool holding unit from outside of the machining area, wherein the position for work is set inside the machining area adjacent to the side wall cover;
• the tool stocker is arranged on top of the ceiling cover or above the ceiling cover;
• the ceiling cover has formed therein a first opening for the tool holding unit to pass through when moved to the position for work;
• the side wall cover and the ceiling cover adjacent to the position for work respectively have second openings formed therein, the second openings being connected to each other;
• the machine tool further includes a movable door configured to open and close the second openings by linear sliding movement;
• the movable door has a door body part and a ceiling door part, the door body part opening and closing the second opening formed in the side wall cover, the ceiling door part being connected to an upper end of the door body part and opening and closing the second opening formed in the ceiling cover;
• and
• the first opening is formed in the ceiling door part.