A controller of a machine tool determines in accordance with a machining program whether a first tool post is used to machine an unfinished workpiece. When the unfinished workpiece needs machining before terminating a continuous machining and when the controller determines that the first tool post is used to machine the unfinished workpiece W2, the controller simultaneously advances a first system and a second system in accordance with the machining program while preventing machining a workpiece held by the first spindle. When the controller determines that the first tool post is not used to machine the unfinished workpiece, the controller stops the first system and advances the second system in accordance with the machining program.

A machine tool (1) removes chips adhering to a working portion of a tool (T). More specifically, a fluid injecting nozzle (23, 24) injects a fluid toward the tool (T) enclosed in an enclosure (22). A controller (15) controls a position of the tool (T) within the enclosure (22), and further controls operation of the fluid injecting nozzle (23, 24) such that the fluid is injected when the tool (T) is within the enclosure (22).

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.

An operational control method is provided for a machine tool that includes a plurality of tool holders with a cutting-tool. The machine tool relatively moves the tool holders with respect to a workpiece to process the workpiece. The operational control method includes determining whether an abnormality has occurred in the cutting-tool during a processing or not, determining whether a simultaneous processing in which at least two or more of the tool holders perform the processings to an identical workpiece is being performed or not and whether the cutting-tool having the detected abnormality is the cutting-tool that is performing the simultaneous processing or not when the abnormality is detected, and causing the tool holder with the cutting-tool having the detected abnormality to take an abnormality avoidance operation and another of the tool holders to take a response operation based on a determination result at the determining of the simultaneous processing.

A horizontal lathe machine includes a work spindle unit disposed on a middle portion of a machine base and proximate to a front side of the machine base for holding a workpiece in an X-direction, and two tooling turret units located at two opposite sides of the spindle unit and driven to move in the X-direction by X-direction driving units. Each turret unit has a saddle movable on the machine base in the X-direction, and a turret driven by a turret driving member to rotate about a turret axis in a Y-direction that is perpendicular to the X-direction for facilitating a tool changing operation.

A horizontal lathe machine includes a work spindle unit disposed on a middle portion of a machine base and proximate to a front side of the machine base for holding a workpiece in an X-direction, and two tooling turret units located at two opposite sides of the spindle unit and driven to move in the X-direction by X-direction driving units. Each turret unit has a saddle movable on the machine base in the X-direction, and a turret driven by a turret driving member to rotate about a turret axis in a Y-direction that is perpendicular to the X-direction for facilitating a tool changing operation.

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).

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.

An operational control method is provided for a machine tool that includes a plurality of tool holders with a cutting-tool. The machine tool relatively moves the tool holders with respect to a workpiece to process the workpiece. The operational control method includes determining whether an abnormality has occurred in the cutting-tool during a processing or not, determining whether a simultaneous processing in which at least two or more of the tool holders perform the processings to an identical workpiece is being performed or not and whether the cutting-tool having the detected abnormality is the cutting-tool that is performing the simultaneous processing or not when the abnormality is detected, and causing the tool holder with the cutting-tool having the detected abnormality to take an abnormality avoidance operation and another of the tool holders to take a response operation based on a determination result at the determining of the simultaneous processing.

A machine tool comprises a main spindle, a tool post body provided with a first tool mounting part and a second tool mounting part facing each other with a workpiece inbetween in a predetermined facing direction, and a tool post body driving unit for moving the tool post body in at least the facing direction. The tool post body comprises a first tool post unit provided with the first tool mounting part, a second tool post unit provided with a portion of the second tool mounting part with a relative interval with respect to the first tool post unit in the facing direction kept constant, a third tool post unit provided with the remaining portion of the second tool mounting part with a relative interval kept variable; and a relatively-driving unit for moving the third tool post unit in the facing direction with respect to the first tool post unit.