A machining centre includes a base supporting several superposed stages. At least one stage is movable and can be position indexed relative to the base. Each stage includes distinct stations at a constant angular pitch including machining units or grippers. The combination of stations from adjacent stages defines a plurality of machining locations each combining a unit and a gripper. Each relative movement between two indexing positions of two stages changes the composition of the locations. Each gripper has at least one rotational degree of freedom relative to the stage that carries it. At least one station includes both at least one machining unit and at least one gripper.

A height milling device is provided, which has a base platform with a working surface and at least a height milling component displaceably disposed on the working surface for performing a height machining on a target object, thereby speeding up the production, improving the production efficiency and reducing the labor cost.

Machine tool such as a lathe has a machine frame 110 having an upper tool carrier support portion 113, a lower tool carrier support portion 114 and a spindle carrier portion arranged between the upper and lower tool carrier support portions. A spindle carrier, is arranged on or at a height of the spindle carrier portion of the machine frame 110, supporting a main spindle 121 configured to receive a workpiece, and a plurality of tool carriers, each tool carrier being supported on a tool carrier assembly 150 being arranged on either the upper tool carrier support portion 113 or the lower tool carrier support portion 114 of the machine frame 110, wherein the machine tool also includes an auxiliary spindle carrier 130 arranged on the spindle carrier portion of the machine frame 110, for supporting an auxiliary spindle 131 configured to receive and guide a workpiece for parallel machining.

The present invention aims at eliminating a need for a moving mechanism that moves a machining table and eliminating a need for a protective cover such as a bellows cover, and includes a machining table that holds a workpiece, a machining mechanism that machines the workpiece with a rotary tool while using a machining liquid, and a moving mechanism that linearly moves the machining mechanism at least in each of X and Y directions on a horizontal plane, in which the machining mechanism moved by the moving mechanism machines the workpiece with respect to the machining table, the machining table being fixed at least in the X and Y directions.

A complex machine tool for cylindrical workpieces has a bed, a headstock assembly, at least one supporting assembly, and at least one machining assembly. The bed has three tracks being respectively a first track, a second track, a third track arranged in order. Each one of the three tracks defines a respective guiding direction, and the three guiding directions of the three tracks are mutually parallel. The headstock assembly is connected to the bed, and is located near one of two ends of the second track. The at least one supporting assembly is mounted on one of the three tracks and is used for supporting the cylindrical workpiece. The at least one machining assembly is mounted on one of the three tracks, is slidable along the track, and is located on a position at a spaced interval from the at least one supporting assembly.

A finishing device for finish machining of a workpiece, in particular of a crankshaft or a camshaft, comprising a workpiece holder and a rotary drive for rotating the workpiece about the workpiece axis thereof, comprising at least one first finishing tool for machining a main bearing concentric to the workpiece axis and at least one second finishing tool for machining an additional bearing, wherein the finishing tools can be moved along a transport axis which extends via a working area defined by the workpiece holder so that the finishing tools can be moved into an additional area arranged outside the working area.

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 complex machine tool for cylindrical workpieces has a bed, a headstock assembly, at least one supporting assembly, and at least one machining assembly. The bed has three tracks being respectively a first track, a second track, a third track arranged in order. Each one of the three tracks defines a respective guiding direction, and the three guiding directions of the three tracks are mutually parallel. The headstock assembly is connected to the bed, and is located near one of two ends of the second track. The at least one supporting assembly is mounted on one of the three tracks and is used for supporting the cylindrical workpiece. The at least one machining assembly is mounted on one of the three tracks, is slidable along the track, and is located on a position at a spaced interval from the at least one supporting assembly.

A machine tool setup changing method includes mounting a master workpiece onto a tool spindle axis, deforming a gripping part by gripping, with the gripping part of a jig, a mock clamped portion of the master workpiece mounted on the tool spindle axis, and removing the master workpiece from the tool spindle axis and mounting a tool supported on a tool support device onto the tool spindle axis, wherein the workpiece gripped at the clamped portion by the gripping part, which was deformed in accordance with the mock clamped portion, can be machined with the tool.

A machine tool setup changing method includes mounting a master workpiece onto a tool spindle axis, deforming a gripping part by gripping, with the gripping part of a jig, a mock clamped portion of the master workpiece mounted on the tool spindle axis, and removing the master workpiece from the tool spindle axis and mounting a tool supported on a tool support device onto the tool spindle axis, wherein the workpiece gripped at the clamped portion by the gripping part, which was deformed in accordance with the mock clamped portion, can be machined with the tool.