A turret tool holder includes an engagement means having engaging elements on a turret side and a support base side, a clutch member for transmitting a driving power to a turret drive section, and a moving mechanism. The moving mechanism includes a rotatably supported drive shaft, a first feed screw mechanism and a second feed screw mechanism rotatable in response to the rotational drive of the drive shaft for moving the clutch member and the engagement elements, and a coordination mechanism arranged between the drive shaft and the first feed screw mechanism or the second feed screw mechanism, for moving the engaging elements in response to the rotational drive of the drive shaft, with a feed amount smaller than the feed amount of the clutch member.

A tool machine magazine includes a base, a tool disc disposed on the base, tool sleeves disposed on a periphery of the tool disc through a bearing, a motor, a brake structure, a cam, a driver shaft, an angle sensor, and a control terminal. The motor drives the cam to operate. Each bearing orderly operates along the outline of the cam, driving the tool disc to continuously rotate without intermittence. The angle sensor is disposed on one end of the driver shaft or a rotation center of the tool disc. When the rotation angle of the tool disc matches the tool change command, the control terminal controls the brake structure to stop the motor, so as to stop the tool disc for facilitating the tool change operation.

A tool machine magazine includes a base, a tool disc disposed on the base, tool sleeves disposed on a periphery of the tool disc through a bearing, a motor, a brake structure, a cam, a driver shaft, an angle sensor, and a control terminal. The motor drives the cam to operate. Each bearing orderly operates along the outline of the cam, driving the tool disc to continuously rotate without intermittence. The angle sensor is disposed on one end of the driver shaft or a rotation center of the tool disc. When the rotation angle of the tool disc matches the tool change command, the control terminal controls the brake structure to stop the motor, so as to stop the tool disc for facilitating the tool change operation.

A coupling device is for the reversible establishment of a drive connection between a driving unit (13) of a tool turret and a driven unit (46) of a tool receptacle (36) attached to the tool turret and in which a machining tool is able to be received. In a coupling position, a drive shaft (14) of the driving unit (13) is engaged by way of its external toothing (32) with an internal toothing of a driven shaft (44) of the driven unit (46). For a collision-free orientation of the external toothing (32) with respect to the internal toothing, before coupling, an aligning device is used. The orienting device passes through parts of the driven shaft (44) and has a control on one side for the cooperation with the drive shaft (13) and an aligner that is actuable by the control on the other side. The aligner is securable to the tool receptacle.

A turret tool holder includes an engagement means having engaging elements on a turret side and a support base side, a clutch member for transmitting a driving power to a turret drive section, and a moving mechanism. The moving mechanism includes a rotatably supported drive shaft, a first feed screw mechanism and a second feed screw mechanism rotatable in response to the rotational drive of the drive shaft for moving the clutch member and the engagement elements, and a coordination mechanism arranged between the drive shaft and the first feed screw mechanism or the second feed screw mechanism, for moving the engaging elements in response to the rotational drive of the drive shaft, with a feed amount smaller than the feed amount of the clutch member.

A turret tool rest includes a main shaft, a turret turning shaft, a turret, a joint base, a mill housing connection shaft, and an engagement member. The main shaft rotates a tool. A part of the main shaft is provided in the turret turning shaft. The turret turning shaft has a first coupling hole. The turret is connected to the turret turning shaft via which the turret is rotated. The joint base has a second coupling hole. The mill housing connection shaft is connected to the joint base. The mill housing connection shaft is provided between the main shaft and the turret turning shaft. Each of the mill housing connection shaft, the joint base, the part of the main shaft, and the turret turning shaft are disposed to rotate around a rotation axis of the turret. The engagement member moves in the first coupling hole and the second coupling hole.

The invention relates to a coupling device for the reversible establishment of a drive connection between a driving unit (13) of a tool turret and a driven unit (46) of a tool receptacle (36) which is attached to the tool turret and in which a machining tool is able to be received, said coupling device being characterized in that, in a coupling position, a drive shaft (14) of the driving unit (13) is engaged by way of its external toothing (32) with an internal toothing of a driven shaft (44) of the driven unit (46), and in that, for a collision-free orientation of the external toothing (32) with respect to the internal toothing, before coupling, an orienting device is used, which passes through parts of the driven shaft (44) and has a control means on one side for the cooperation with the drive shall (13) and an orienting means that is actuable by the control means on the other side, said orienting means being securable to the tool receptacle.

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.

A turret tool rest includes a main shaft, a turret turning shaft, a turret, a joint base, a mill housing connection shaft, and an engagement member. The main shaft rotates a tool. A part of the main shaft is provided in the turret turning shaft. The turret turning shaft has a first coupling hole. The turret is connected to the turret turning shaft via which the turret is rotated. The joint base has a second coupling hole. The mill housing connection shaft is connected to the joint base. The mill housing connection shaft is provided between the main shaft and the turret turning shaft. Each of the mill housing connection shaft, the joint base, the part of the main shaft, and the turret turning shaft are disposed to rotate around a rotation axis of the turret. The engagement member moves in the first coupling hole and the second coupling hole.

A turret device having a configuration for obtaining required processing accuracy, includes: an indexing motor configured to pivotally index a turret tool; a turret shaft configured to transmit a rotation of the indexing motor; and a turret head coupled to the turret shaft on which multiple turret tools are mounted on a circumference, wherein the turret head includes a diaphragm-type base member coupled to the turret shaft, an inner diameter side of the base member is coupled to the turret shaft, and an outer diameter side of the base member is rotationally supported by a bearing fixed to a main body member of a turret.