A workpiece processing assembly with multiple working operations includes a working platform, a first positioning device disposed thereon, a second positioning device situated relative to the first positioning device, a first turning device situated beside the first positioning device, a second turning device situated beside the second positioning device, and a controlling device. The turning devices each are equipped with at least two processing tools. A first transverse slide rail disposed on the working platform serves to adjust the distance between the positioning devices, thereby clamping at least one workpiece firmly. Two longitudinal slide rails respectively disposed on the working platform serve to adjust the distance between each turning device and each corresponding positioning device, thereby moving the processing tools to a proper processing position. Thus, the inconvenience caused by replacing the processing tools during the turning process is prevented, and the processing efficiency is greatly increased.

A tool-changing device which is used on machine tools (18). Here, provision is made to carry out positioning of a tool holder (2) in the working position (6) of the tool holder with the aid of the locking element (7) of the drive device (4) of the tool-changing device (1). An adjusting movement (22) of the locking element (7) into the locking position (9) of the locking element on the tool holder (2) that is required for the use of the tool (3) is used to position the tool holder (2) in the working position (6) thereof, by the adjusting movement (2) of the locking element (7) being converted into a positioning movement (21) of the tool holders (2).

A tool-changing device which is used on machine tools (18). Here, provision is made to carry out positioning of a tool holder (2) in the working position (6) of the tool holder with the aid of the locking element (7) of the drive device (4) of the tool-changing device (1). An adjusting movement (22) of the locking element (7) into the locking position (9) of the locking element on the tool holder (2) that is required for the use of the tool (3) is used to position the tool holder (2) in the working position (6) thereof, by the adjusting movement (2) of the locking element (7) being converted into a positioning movement (21) of the tool holders (2).

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.

An automatic lathe includes a front main spindle holding a workpiece and a turret including a peripheral surface, the peripheral surface being divided into a plurality of turret surfaces, tools being mounted on the turret surfaces, the turret machining the workpiece with any of the tools selected by turning about a Z axis, wherein at least one turret surface of the turret surfaces of the turret has a distance from the Z axis shorter than that of the other turret surfaces.

A machine tool (1) removes chips adhering to a working portion of a tool (T). More specifically, a fluid injecting nozzle (23, 24) injects a fluid toward the tool (T) enclosed in an enclosure (22). A controller (15) controls a position of the tool (T) within the enclosure (22), and further controls operation of the fluid injecting nozzle (23, 24) such that the fluid is injected when the tool (T) is within the enclosure (22).

A machine tool configured to attach multiple tools to a turret is provided to improve the efficiency of a tool exchanging operation and, thus, also the production efficiency. A control device determines whether an expired tool, which is a tool needs to be exchanged, is present among the tools held by the turret. The control device sets a tool exchanging position, which is a position within the movable range of a head section and is a position where the expired tool is exchanged with a new tool. If the control device determines that an expired tool is present, the control device causes a head section driving device to move the head and rotate the turret to position the expired tool at the tool exchanging position.

The present invention is a mini wheel CNC and manual lathe with wheel straightener and method for using said lathe.

The present disclosure generally relates to a turning machine comprising a first spindle which can be set in rotation for gripping and rotating a first semi-finished product to be machined, in particular to be turned, and a second spindle which can be set in rotation and is likewise suitable for gripping and rotating a second semi-finished product to be machined. A first bar load magazine associated with the first spindle is configured to convey the first semi-finished product through a first opening of the first spindle into a machining area located between the spindles. A second bar load magazine associated with the second spindle may be configured to convey a second semi-finished product through a second opening of the second spindle into the machining area.

A tool holder for a lathe having a spindle permits improved arrangement of tools on a turret to maximize the allowable workpiece outer diameter for a given tool. A Z-axis feed mechanism moves the spindle and the turret relative to each other in a Z-axis direction along a center axis of the spindle, while an X-axis feed mechanism moves the spindle and the turret relative to each other in an X-axis direction orthogonal to the Z-axis direction. A plurality of tool holders is attached to the turret, each having a tool holding part. At least one of the tool holders holds the tool at a holding position such that, when indexed to a machining position by rotation of the turret, a cutting-edge reference point of the tool is offset with respect to an X-Z plane including a center axis of the turret.