Lathe

A lathe comprising:

• a spindle rotatable on a spindle axis and provided with a chuck having a closed state to hold a workpiece and an opened state to release the workpiece, the chuck being provided at a front end of the spindle;
• a support which rotatably support the spindle by a front bearing and a rear bearing;
• a built-in motor disposed between the front bearing and the rear bearing to rotate the spindle;
• and
• a chuck operating apparatus which opens and closes the chuck, comprising:
• a tilt claw provided outside the spindle and having a movable end whose distance from the spindle axis varies between a first posture to bring the chuck into the opened state and a second posture to bring the chuck into the closed state, the claw being provided between the front bearing and the rear bearing;
• and
• a shifter provided outside the claw and movable in a direction of the spindle axis to be brought in a first position to bring the claw into the first posture and in a second position to bring the claw into the second posture,
• wherein the shifter is located within both ends of the claw in the direction of the spindle axis,
• wherein the claw includes a root having a through-hole into which a claw pin is inserted and the claw has a recess and a groove formed on an outer surface of the claw between the root and the movable end,
• wherein the recess and the groove are divided by a hill therebetween,
• wherein the groove is located between the recess and the movable end and is narrower than the recess, and
• wherein the shifter is located in the recess and the groove in the first posture of the claw and at least a part of the shifter is located on the movable end in the second posture of the claw.