A tooling assembly for a lathe machine includes a tool platform configured to be mounted on the lathe machine, a milling tool holder fixedly secured to the tool platform and workable to releasably secure a thread milling tool therein, and a milling tool drive. The milling tool drive is operatively connected to the milling tool holder and operable to rotate the milling tool holder independently of a work holder to mill threads on the workpiece when a pipe thread milling tool is secured in the milling tool holder. Computer numerical control threading lathes and methods of milling threads in tubular workpieces are also described.

A CNC turning and milling machine includes: a base, a moving unit, a spindle unit and a turret unit. The spindle limiting unit and the turret limiting unit are employed to limit the movement range, and the spindle unit and the turret unit are fixed on the upright post to strengthen the overall structural strength and reduce vibration during processing, thereby improving machining accuracy and processing efficiency, while reducing surface roughness.

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.

A lathe includes a spindle, a turret, a Z-axis feed mechanism moving the spindle and the turret relative to each other in a Z-axis direction along a center axis of the spindle, an X-axis feed mechanism moving the spindle and the turret relative to each other in an X-axis direction orthogonal to the Z-axis direction, and a plurality of tool holders each having a tool holding part holding a tool, and attached to the turret. The tool holding part of at least one of the tool holders holds the tool at a holding position thereon set at a position such that, when the held tool is indexed to a machining position by rotation of the turret, a cutting-edge reference point of the held tool is offset to one side with respect to an X-Z plane including a center axis of the turret.

A processing machine includes: a tool spindle provided swingably centered on a predetermined axis in parallel with a horizontal direction; an additive manufacturing head that can be attached to and detached from tool spindle, and performs work on the workpiece; a first connection part that is provided for tool spindle and additive manufacturing head, and connects tool spindle and additive manufacturing head to each other; and a second connection part that is provided for tool spindle and additive manufacturing head, is disposed at a position apart from first connection part, and connects tool spindle and additive manufacturing head to each other. First connection part is disposed on one side with respect to a virtual plane that includes a gravity center position of additive manufacturing head and predetermined axis, and second connection part is disposed on the other side with respect to virtual plane.

A CNC turning and milling machine includes: a base, a platform, combined movable device, a turret rack, a turret, a main shaft seat, a main shaft, and a tool magazine. The turret rack and the main shaft seat are disposed on the combined movable device, the turret is disposed on the turret rack, and the main shaft is mounted on the main shaft seat, so that the milling and turning operation can be performed simultaneously by a single machine, without the disadvantage of the conventional CNC turning and milling machine which has a less rigid structure. The power of the main shaft is increase by 300 percent.

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 tooling assembly for a lathe machine includes a tool platform configured to be mounted on the lathe machine, a milling tool holder fixedly secured to the tool platform and workable to releasably secure a thread milling tool therein, and a milling tool drive. The milling tool drive is operatively connected to the milling tool holder and operable to rotate the milling tool holder independently of a work holder to mill threads on the workpiece when a pipe thread milling tool is secured in the milling tool holder. Computer numerical control threading lathes and methods of milling threads in tubular workpieces are also described.

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.