A turret tool post includes a turning part having a plurality of turret surfaces on which tools for machining a workpiece are mounted, the turning part being configured to select any one of the tools for use in the machining of the workpiece by turning; a non-turning part on which a laser head of a laser machining device different from the tool is mounted, the non-turning part being arranged inside the turning part, an optical fiber cable being connected to the laser head; and a cut part (machinable part) that allows machining by the laser head to the workpiece under a state in which the laser head is selected.

A tool rest for a machine tool, with a plurality of rotary tools and a tool-rotating drive shaft supported rotatably so that its rotation is transmitted to each rotary tool. The tool rest includes: a plurality of input portions fixed to the tool-rotating drive shaft; and engaging portions corresponding to the respective input portions, rotatably supported and adopted to be driven in rotation by the input portions for engaging with engaged portions of each rotary tool to transmit power when a prescribed rotational phase is reached. Adjusting means is provided between a prescribed input portion and the engaging portion, for adjusting the phase of the engaging portion relative to the tool-rotating drive shaft such that the engaging portions and the corresponding engaged portions are engaged simultaneously.

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.

A turret tool post includes a turret turnably supported by a post body, turret turning part having a turret turning shaft and the like to turn the turret, a tool attachment part turnably holding a rotatable tool and attached to the turret, and tool-attachment-part turning part turning the tool attachment part to turn the rotatable tool. The tool-attachment-part turning part and the turret turning part are provided independently and arranged to face each other. The tool-attachment-part turning part includes a tool turning motor installed inside the turret and an attachment-part transmission shaft connected to the tool turning motor.

The present invention relates to a machine tool including a ram spindle and a tool holder, and provides a machine tool comprising: a tool holder including at least two inserts; and a ram spindle capable of fixing the tool holder in a clamped state or rotating the tool holder in order to change the position of the insert, such that the position of the insert can be quickly changed, thereby enabling an improvement in productivity and precision and a reduction in product costs.

A skiving machine has a workpiece spindle and a tool spindle for holding a work wheel to undergo gear cutting, which tool spindle can be rotationally driven synchronously with the workpiece spindle. The workpiece is inclined at an axis intersection angle with respect to the tool spindle for holding a tool retainer. A tool changing system fastened to a housing of the tool spindle is provided, and has a tool carrier, which can be rotated about a tool-carrier axis of rotation and which has carrying plates rotationally arranged around the tool-carrier axis of rotation, each carrying plate having a bearing opening for holding a tool retainer carrying a skiving tool, wherein tool retainers supported in the bearing openings can be selectively coupled to the tool spindle rotation of the tool carrier about the axis of rotation.

A tool holder (100) holds a tool (170) in a non-rotatable manner. When an attaching surface (112a) of a body part (110, 120, 150) of the tool holder is attached to a tool holder attachment surface of a machine tool, cooling medium supplied from the machine tool flows through a first body part passage (114, 124). Then, a rotary member (130) is rotationally driven by a drive mechanism provided in the machine tool. When a rotary part of a pump (200) rotates with the rotary member, the pressure of the cooling medium suctioned into the pump is proportionally increased in accordance with the rotational speed of the rotary part, and pressurized cooling medium is discharged from an outlet part (202) of the pump. The pressurized cooling medium then flows through a second body part passage (115, 125) and is thereafter sprayed from a spray hole (161) of a nozzle (160).

A machine tool includes a main spindle that rotates while holding a workpiece, a mover that moves a cutting tool including a linear cutting blade that cuts the workpiece, with respect to the workpiece in a moving direction including at least a Z-direction parallel or substantially parallel with the axis of the main spindle and a Y-direction perpendicular or substantially perpendicular to both the Z-direction and an X-direction determining the amount of cutting of the workpiece, a holder that holds the cutting tool in a state in which the direction of the linear cutting blade is inclined with respect to the Z-direction by a predetermined angle when seen from the X-direction, and an angle adjuster that changes the edge angle.

A first driving force transmission part is disposed between an attachment part turning transmission shaft and a tool attachment part. The first driving force transmission part transmits rotary driving force from a side of the attachment part turning transmission shaft to the side of the first turning driving force transmission shaft, and includes a groove, a tenon shaped protrusion, and protrusions. The groove is formed on a tip of a slide shaft of the attachment part turning transmission shaft. The tenon shaped protrusion is formed in the first turning driving force transmission shaft and detachably engages with the groove. The protrusions once releases an engaging posture by pressing the groove that is biased to the engaging posture in an disengaging state when the tool is in the middle of the movement to a predetermined position.

A first driving force transmission part is disposed between an attachment part turning transmission shaft and a tool attachment part. The first driving force transmission part transmits rotary driving force from a side of the attachment part turning transmission shaft to the side of the first turning driving force transmission shaft, and includes a groove, a tenon shaped protrusion, and protrusions. The groove is formed on a tip of a slide shaft of the attachment part turning transmission shaft. The tenon shaped protrusion is formed in the first turning driving force transmission shaft and detachably engages with the groove. The protrusions once releases an engaging posture by pressing the groove that is biased to the engaging posture in an disengaging state when the tool is in the middle of the movement to a predetermined position.