Nozzle body, and machine tool to which nozzle body can be attached

A machine tool comprising:

• a nozzle body having:
• a body;
• a shank that is attached to a main spindle of a machine tool;
• a shaft body base portion being provided inside the body, the shaft body protruding from the shank and rotatably supported by the body;
• a cleaning nozzle arranged on the shaft body;
• a fastening body configured to fasten the shaft body base portion and the cleaning nozzle;
• a first annular path being provided on an outer circumference of the shaft body;
• a discharge orifice being provided at a leading end on the opposite side of the cleaning nozzle from the shank;
• a first path being provided inside the shaft body, the first path providing communication between the discharge orifice and the annular path;
• a detent being provided to the body;
• and
• a second path being provided to the body and opens into the detent, the second path configured to provide communication between the opening and the annular path;
• a coolant source;
• a turret that is supported rotatably about a rotational axis;
• main spindles that are provided to the turret and has a main spindle hole to which the shank is attached;
• positioning blocks that have:
• an insertion hole into which the detent is inserted;
• a first fluid outlet provided to the insertion hole;
• and a first fluid inlet communicating with the first fluid outlet, the positioning block being provided to the turret in such a manner that the insertion hole is adjacent to the main spindle hole;
• a rotary joint that has:
• a hollow rotor provided with second fluid outlets and fixed to the turret;
• a stator provided with second fluid inlets and supported inside the rotor so as to be rotatable about the rotational axis;
• second annular paths formed by a flow path groove arranged on the stator and a inner surface of the rotor;
• third paths being provided inside the stator, the third paths providing communication between the second fluid inlets and the second annular paths;
• and
• fourth paths being provided inside the rotor, the fourth paths providing communication between the second annular paths and the second fluid outlets;
• first pipes that connect the second fluid inlets and the coolant source;
• valves each being connected between the coolant source and the second fluid inlets;
• and
• second pipes that connect each of the second fluid outlets and the first fluid inlet.