A cutting tool rest includes a first tool holder that holds a rotating tool, a second tool holder that holds a fixed tool, and a plurality of holder-mounting parts on which one of first tool holder and the second tool holder is selectively mounted. Each of first tool holder and the second tool holder includes a clamping mechanism part. Each of holder-mounting parts includes a hydraulic cylinder mechanism part that causes clamping mechanism part to operate in a clamped state of clamping a tool and an unclamped state of unclamping the tool when a hydraulic pressure is supplied.

The present disclosure relates to a long boring bar device of a machine tool and, more particularly, to a long boring bar device of a machine tool, wherein a boring bar is detachably fastened to a holder, and a head tool is detachably fastened to the boring bar to automatically exchange a head tool through an automatic tool changer, thereby reducing non-processing time and improving productivity of the machine tool.

A hydro chuck includes a shank portion provided on one end side in a longitudinal direction and having, on a leading end side thereof, a cylindrical chuck portion for gripping a gripped object and an operational portion provided on the other end side in the longitudinal direction and disposed in continuation from the shank portion. The shank portion is fixable by being inserted to a tool mount included in a machine tool. The chuck portion includes a sleeve gripping the gripped object and a fluid pressure chamber formed on an outer circumference side of the sleeve and filled with fluid, the chuck portion being configured such that in association with a rise of a pressure of the fluid inside the fluid pressure chamber, the sleeve is reduced in its diameter to grip the gripped object. The operational portion includes a communication passage communicated to the fluid pressure chamber and a pressurizing piston disposed in the communication passage and adjusting the pressure of the fluid inside the fluid pressure chamber.

A turning tool includes a power receiving coil, a sensor, and a wireless unit. The power receiving coil receives power transmitted from a power transmitting coil in a non-contact manner. The sensor is electrically connected to the power receiving coil. The wireless unit transmits data detected by the sensor to an outside.

A turning tool includes a power receiving coil, a sensor, and a wireless unit. The power receiving coil receives power transmitted from a power transmitting coil in a non-contact manner. The sensor is electrically connected to the power receiving coil. The wireless unit transmits data detected by the sensor to an outside.

The disclosed embodiments provide a novel and unique apparatus and method to remove swarf from a workpiece during the operation of a machine tool on that workpiece. In a preferred embodiment, a set of slanted vanes attached to a rotating part of the machine tool, when that rotating part is directed at the workpiece, clears swarf from a workpiece during machine operation without having to add any other expensive swarf removal parts, or integrate any complicated swarf removal system into the machine tool. The vanes on the rotating part, using the motion of that rotating part, provide the required force of air to blow swarf out and away from the workpiece. Among the many different possibilities contemplated, the rotating part can be a spindle, or a tool holder, or an endmill, or any other rotating part of a machine tool pointed at the workpiece during the operation of the machine. Additionally, the set of slanted vanes can attach to an inner hub fitted around or onto the rotating part and the slanted vanes can spin free of any other parts if the composition of the vanes with any metallic or non-metallic material make the vanes sufficiently stiff to provide the necessary air force on the workpiece during the operation of the machine and the high speed of the rotating part. Also, the outer edge of the slanted vanes can connect to a shroud surrounding the vanes and thus keep the slanted vanes in the required slanted position to produce the necessary force of air on the workpiece. Additionally, O-rings can be used to fit the inner hub to the rotating part and thus provide another way to create the firm and secure attachment of the machine tool swarf removal apparatus to the rotating part.

A machine tool comprises a tool carrier, e.g. in the form of a turret disc (7) that is provided with receptacles (8) for tool holders (9), wherein each tool holder and tool carrier comprise support surfaces associated to each other and devices for fixing the tool holder at the tool carrier. At least one clamping element is provided at the tool carrier (7) that is adjustably supported between a clamping position and a release position in a direction transverse to a tie rod of a tool holder arranged on a slider (22) receptacle of the tool carrier. The clamping element is provided with a first clamping surface (24) that can be brought into engagement with a second clamping surface (35) at the tie rod of the tool holder in a self-locking and releasable manner.

A simple machine tool including a relatively simple shaped turret having as many tool attachment parts as possible even when a cutout part for a movement path for a main spindle is provided. A machine tool includes a first main spindle, a second main spindle, a first turret having tool attachment parts, a second turret having tool attachment parts, and a controller having an indexing device. An edge of a cutout part formed in the second turret is a straight line in a direction crossing each side of a regular dodecagon centered at a turning center of the second turret, as seen in a Z axis direction, and each tool attachment part is disposed according to each side left in the regular dodecagon cut off by the cutout part.

A simple machine tool including a relatively simple shaped turret having as many tool attachment parts as possible even when a cutout part for a movement path for a main spindle is provided. A machine tool includes a first main spindle, a second main spindle, a first turret having tool attachment parts, a second turret having tool attachment parts, and a controller having an indexing device. An edge of a cutout part formed in the second turret is a straight line in a direction crossing each side of a regular dodecagon centered at a turning center of the second turret, as seen in a Z axis direction, and each tool attachment part is disposed according to each side left in the regular dodecagon cut off by the cutout part.

A machining head is provided with a turret on which multiple rotating tools are mounted, and this head is configured such that rotation of each of the multiple rotating tools during machining and rotation of the turret are performed by a single motor. A switchable turret rotation transmission mechanism is disposed to be capable of transmitting the rotation of the motor shaft to the turret as the rotation of the turret and releasing the transmission. The rotation of each of the multiple rotating tools during the machining and the rotation of the turret can be performed by the single motor.