A technology capable of downsizing the lathe is provided. The lathe comprises a spindle which rotates a workpiece on a spindle axis, a turret head, and a tool unit switching driving unit. The turret head has a plurality of turret surfaces to which a tool unit is radially attached around an indexing axis. To at least part of the turret surfaces, the tool unit is attached in a plurality of attaching positions provided in an indexing axis direction along the indexing axis. The tool unit switching driving unit rotates the turret head on the indexing axis and moves the turret head in the indexing axis direction to switch the tool units for use to machine the workpiece.

For a turning machine (1) that can be used for rotary turning, the tool holder (20) is hydrostatically mounted. A method corresponding to this is described, and it is provided to use a hydrostatic bearing (8, 9) for the damping of mechanical vibrations of a tool holder (20) and/or for the permanent mounting of a tool holder (20) of a turning machine (1).

A vertical lathe, including: a headstock provided on the upper side of a base so as to be capable of moving in the lateral direction and the vertical direction; a main spindle rotatably supported by the headstock; a workpiece chuck provided at the lower end section of the main spindle; a turret support stand provided so as to be capable of moving in the longitudinal direction orthogonal to the lateral direction and the vertical direction; an actuator for moving the turret support stand in the longitudinal direction; a turret having tool mounting parts provided at a plurality of circumferential positions, the turret being supported by the turret support stand so as to enable turn-indexing about the axis in the longitudinal direction; and a plurality of processing tools attached at each of the tool mounting parts so as to be set apart from each other in the longitudinal direction.

Provided is a machine tool (1) capable of effectively removing machining chips adhering to a portion excluding a held portion and including a machining working portion of a tool (T). The machine tool (1) includes a tool holding unit (6) holding the tool (T), a feed mechanism (10, 11, 12) moving the tool holding unit (6) in at least one axis direction, an enclosure (22) provided within an operating area of the tool (T), having an opening, and having an interior area into which a portion of the tool (T) exposed outside from the tool holding unit (6) can be partially or entirely enclosed through the opening, a fluid injecting nozzle (23, 24) provided on at least one of the tool holding unit (6) and the enclosure (22) and injecting a fluid toward the tool (T) enclosed in the enclosure (22), and a controller (15) controlling the feed mechanism (10, 11, 12) such that the tool (T) is enclosed into the enclosure (22) by moving the tool holding unit (6), and controlling an injecting operation of the fluid injecting nozzle (23, 24) such that the fluid is injected in a state where the tool (T) is enclosed in the enclosure (22).

A numerical controller includes a command analysis unit that generates movement command data by analyzing a program command and an axis travel calculation unit that, when the program command commands movement of a tool in a direction of a first straight axis orthogonal to an axis of rotation of a workpiece, converts a command value based on the program command for the movement of the tool in the direction of the first straight axis into a command value for a rotation angle of a turret, and a position of the tool is controlled in accordance with a rotation command for the turret based on the command value for the rotation angle of the turret calculated by the axis travel calculation unit, instead of the command based on the program command for the movement in the direction of the first straight axis.

The present disclosure generally relates to a turning machine comprising a first spindle which can be set in rotation for gripping and rotating a first semi-finished product to be machined, in particular to be turned, and a second spindle which can be set in rotation and is likewise suitable for gripping and rotating a second semi-finished product to be machined. A first bar load magazine associated with the first spindle is configured to convey the first semi-finished product through a first opening of the first spindle into a machining area located between the spindles. A second bar load magazine associated with the second spindle may be configured to convey a second semi-finished product through a second opening of the second spindle into the machining area.

Provided is a highly practical machining system. The machining system is configured to include a base, and multiple machining modules which are detachably disposed on the base to be aligned with one another in a left-right direction. Machining is sequentially performed by the multiple machining modules with respect to a workpiece. At least one of the multiple machining modules is a vertical lathe module. It is possible to configure a compact system in which machining can be performed by a vertical lathe.

A lathe includes a spindle rotatable on a spindle axis, a tool post to which a tool is attachable, an X1-axis ball screw extended in an X1-axis direction perpendicular to the spindle axis and capable of moving the tool post in the X1-axis direction, and an X1-axis support bearing provided on an end of the X1-axis ball screw with respect to the X1-axis direction to restrict movement of the X1-axis ball screw in the X1-axis direction. The tool post is provided with an X1-axis ball screw nut engaged with the X1-axis ball screw. The X1-axis ball screw nut is movable in the X1-axis direction according to rotation of the X1-axis ball screw. The direction that the X1-axis ball screw nut approaches the X1-axis support bearing faces the same direction as the direction that the tool cuts into the workpiece.

A lathe capable of shortening a spindle with respect to a spindle axis direction. A spindle provided with a chuck at the front end thereof is rotatably supported on a support by bearings. A chuck operating apparatus includes a tilt claw and a shifter. A built-in motor is disposed between the bearings to rotate the spindle. The claw is provided outside the spindle and between the bearings. The claw has 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 shifter is provided outside the claw and movable in the spindle axis direction 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.

A lathe capable of shortening a spindle with respect to a spindle axis direction. A spindle provided with a chuck at the front end thereof is rotatably supported on a support by bearings. A chuck operating apparatus includes a tilt claw and a shifter. A built-in motor is disposed between the bearings to rotate the spindle. The claw is provided outside the spindle and between the bearings. The claw has 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 shifter is provided outside the claw and movable in the spindle axis direction 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.