PURPOSE: To facilitate the changing of a detecting means and/or an auxiliary means on a turret tool post with mutual interchangeability, and to miniaturize the turret tool post and to reduce the cost of the device.
CONSTITUTION: In the turret tool post 1 of a numerical control lathe provided with a turret 6 having a plurality of tool holder attaching faces 7 to which a plurality of tool holders 8 is severally attached, the tool holder attaching face 7 is changeably provided with a detecting means 51 to issue a detecting signal and/or an auxiliary means driven by hydraulic pressure, and a turning shaft 25 is fixed to the turret 6, and fluid passages 26A, 26B, 28A, 28B are formed in the turning shaft 25 and the turret 6 so as to make the turning shaft 25 communicate with the tool holder attaching face 7. Fluid is supplied through the fluid passage of the tool holder attaching face 7 to the detecting means 51 and/or the driving section of the auxiliary means, and in addition, a receptacle 42 is attached to the turning shaft 25 through a signal wire, and a connector 54 on the output side of the detecting means 51 attached to the tool holder attaching face 7 is connected to the receptacle 42.
OKABE TAKESHI
AKIMOTO AKIRA
KANETANI AKIHIDE
