Lathe
AssigneeStar Micronics Co., Ltd.
InventorTakayuki ISHIKAWA
Life of this patent
Estimating the term…
Abstract
A lathe capable of facilitating maintenance of a chucking mechanism. A chuck operating apparatus includes a claw and a shifter to open and close a chuck provided on a spindle. The tilt claw provided outside the spindle has a first posture to bring the chuck into the opened state and a second posture to bring the chuck into the closed state. The shifter provided outside the spindle and movable in a spindle axis direction is 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. A roller is mounted on the shifter in a contact position with the claw to roll in the spindle axis direction.
Claims2
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;
- and
- a chuck operating apparatus which opens and closes the chuck, comprising:
- a tilt claw provided outside the spindle and having a first posture to bring the chuck into the opened state and a second posture to bring the chuck into the closed state;
- and
- a shifter provided outside the spindle 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 a roller is mounted on the shifter in a contact position with the claw to roll in the direction of the spindle axis.
Dependencies are inferred from the claim text.