A machine tool includes: a turret configured to hold a tool through a clamp mechanism; a workpiece main spindle device configured to rotatably hold a workpiece; a switching unit configured to change a clamp state of the clamp mechanism by using rotation torque of the workpiece main spindle device; and an in-machine robot configured to move the switching unit. The clamp mechanism includes a torque input hole to which rotation torque is applied to change the clamp state. The switching unit includes an input shaft coupled with the workpiece main spindle device, an output shaft coupled with the torque input hole of the clamp mechanism and configured to output torque to the torque input hole, and a transmission mechanism configured to transfer, to the output shaft, the rotation torque of the workpiece main spindle device input through the input shaft.

The present invention relates to verifying the suitability of a tool and diagnosing a spindle for a machining center on which different tools are mounted. Provided are a machining center spindle diagnosis apparatus and method configured to monitor a change of a tool in the machining center; when the change of the tool is recognized, control the machining center to idle the spindle; acquire sensor data from a sensor installed on the machining center during the idling of the spindle; input the acquired sensor data to a tool verifying model pre-trained by a machine learning technology to verify suitability of the tool; and when the tool is verified to be suitable, inputting the acquired sensor data to a spindle diagnosing model pre-trained by the machine learning technology to diagnose an operating state of the spindle.

A tool magazine (40) is able to move among a machining position where a tool (2) attached to a spindle (30) machines a workpiece, a tool exchange position where the tool (2) attached to the spindle (30) is exchanged, and a retreat position where an automated workpiece carrying device is not disturbed in placing or removing of the workpiece with respect to a workpiece placing part (20). The workpiece is placed on the workpiece placing part (20) from above or removed upward from the workpiece placing part (20) by the automated workpiece carrying device.

An offset number setting device that freely and easily sets an offset number for a tool to be mounted on a tool holder of a turret surface. A display linkage unit displays a turret surface selection screen on a display, displays a tool holder selection screen on the display by selecting the turret surface, and displays an offset number setting screen on the display by selecting the tool holder. An offset number is therefore set for the tool along with the selection of the turret surface on which the tool is mounted.

A numerical controller performs control to rotate a turret, which holds a plurality of tools on the outer peripheral portion thereof, thereby moving one (selected tool) of the tools selected by a command to a predetermined position (selected position). The numerical controller sets and holds a partial area of the outer peripheral portion of the turret as an area (passage-prohibited area) prohibited from passing through the selected position and determines whether or not the selected tool is present in the passage-prohibited area or whether or not the passage-prohibited area passes through the selected position as the selected tool is moved to the selected position.

A machine tool includes: a lower tool rest on which a plurality of tools are mounted; a motor provided at the lower tool rest, for rotating a rotating tool when the rotating tool is mounted on the lower tool rest; and a tool holder attached to the lower tool rest, for detachably holding the tool. The tool holder has a clamping mechanism portion operating between a clamping state of clamping the tool and an unclamping state of unclamping the tool, as a result of transmission of motive power generated at the motor. With such a configuration, the clamping mechanism portion for automatically clamping and unclamping the tool held in the tool holder on the tool rest is provided with a simple configuration.

The present disclosure relates to a method for managing turret tools for a machine tool, and more particularly, by setting tool information and changing a mounting location of the tool, which is to be mounted or has been mounted, by using visual information about a turret mounted in the machine tool and the tool mounted in the turret, a user may intuitively check information about a tool mounted on the turret and to easily set tool installation information which needs to be set when mounting and detaching the tool, changing a location of the tool, or installing the tool in a machine tool.

The present disclosure relates to an automatic tool changer for a machine tool which can change a tool mounted on a tool post by moving both of a magazine and a tool post to be concentric in order to change a tool in a horizontal type machine tool such as a lathe or a horizontal type turning center; a method of controlling the automatic tool changer and a machine tool including the automatic tool changer.

A nozzle used to clean a cutting tool held by a turret in a position different from a spindle position (cutting tool exchange position) is provided. When a cutting tool exchange command is issued, the turret is caused to pivot so that a cutting tool to be attached to the spindle next is located in a cleaning position. The nozzle ejects a coolant or air toward a cavity in a tapered section of the next cutting tool held by the turret. Since chips and other foreign matter are removed from the cavity, occurrence of clamping failure that may occur when the next cutting tool is attached to the spindle can be avoided.

A numerically controlled machine tool including a multi-spindle turret provided with a body extending along an axis A-A between a first end by which it is fastened to a frame of the machine tool and a second end at which it comprises a rotatable head, the head comprising at least two toolholding spindles, each intended to engagingly receive a cutting tool, the spindles occupying, depending on the angular position of the head, a working position in which they are intended to carry out a machining operation on a workpiece held in position in a fixture, or a standby position in which they are withdrawn from said workpiece, each of said spindles being configured to be controlled independently of the other in order to immobilise or rotatably drive the tool that it carries, regardless of the position occupied thereby.