Tool magazine device and machine tool

A tool magazine device comprising:

• a rail that is annularly formed and that has a separation section at a part in a circumferential direction of the rail;
• a holding ring that is arranged coaxially with the rail and that has a plurality of holding sections opened in an axial direction of the rail, the plurality of holding sections being arranged along the circumferential direction;
• a driving motor to rotate the holding ring around an axis of the holding ring;
• a tool pot that is held to be insertable into and extractable from the holding section and to which a tool is detachably attached;
• and
• a conveyance unit that sends the tool pot placed in the holding section to an exchange position and that sends the tool pot into the holding section from the exchange position;
• wherein a roller supported by the tool pot rolls on the rail in response to rotation of the holding ring, and, when the tool pot moves in an up-down direction by the conveyance unit, the roller supported by the tool pot passes in the up-down direction through the separation section of the rail.