The present invention discloses an efficient brake disc processing device, which relates to the technical field of brake disc processing, comprising a lathe bed, an upright vertical lathe and a first power tool holder installed on a top end of the lathe bed, and an inverted vertical lathe and a second power tool holder installed on a rear side of the top end of the lathe bed, wherein the upright vertical lathe is cooperated with the second power tool holder to process an upper brake surface of a brake disc, and the inverted vertical lathe is cooperated with the first power tool holder to process a lower brake surface of the brake disc.

The present disclosure relates to a machine tool, in particular multi-spindle turning machine, comprising a machine frame, a turret body being rotatably supported by the machine frame, a plurality of workpiece spindles being arranged on the turret body, each of the workpiece spindles having a workpiece receiving portion for receiving a respective workpiece on one side of the turret body facing a working space of the machine tool, and a torque motor for driving a rotation of the turret body. The torque motor is arranged at a back end portion of the turret body opposite to the side of the turret body facing the working space of the machine tool, and a position locking mechanism for locking a rotational position of the turret body is arranged at a front end portion of the turret body on the side of the turret body facing the working space of the machine tool.

The present disclosure relates to a machine tool, in particular multi-spindle turning machine, comprising a machine frame, a turret body being rotatably supported by the machine frame, a plurality of workpiece spindles being arranged on the turret body, each of the workpiece spindles having a workpiece receiving portion for receiving a respective workpiece on one side of the turret body facing a working space of the machine tool, and a torque motor for driving a rotation of the turret body. The torque motor is arranged at a back end portion of the turret body opposite to the side of the turret body facing the working space of the machine tool, and a position locking mechanism for locking a rotational position of the turret body is arranged at a front end portion of the turret body on the side of the turret body facing the working space of the machine tool.

A machine tool, in particular multi-spindle turning machine, comprising a machine frame, a turret body being rotatably supported by the machine frame, a plurality of workpiece spindles being arranged on the turret body, each of the workpiece spindles having a workpiece receiving portion for receiving a respective workpiece on one side of the turret body facing a working space of the machine tool, and a plurality of tool post assemblies supported by the machine frame around the turret body, wherein each tool post assembly includes a tool post having one or more tool cartridge receiving openings respectively being configured to detachably receive a tool holder cartridge TC holding a tool.

A machine tool, in particular multi-spindle turning machine, comprising a machine frame, a turret body being rotatably supported by the machine frame, a plurality of workpiece spindles being arranged on the turret body, each of the workpiece spindles having a workpiece receiving portion for receiving a respective workpiece on one side of the turret body facing a working space of the machine tool, and a plurality of tool post assemblies supported by the machine frame around the turret body, wherein each tool post assembly includes a tool post having one or more tool cartridge receiving openings respectively being configured to detachably receive a tool holder cartridge TC holding a tool.

The present disclosure relates to a bar loader and machine tool equipped with such bar loader, wherein the machine tool includes at least one workpiece spindle configured to receive an elongated workpiece, and the bar loader apparatus comprises, for each workpiece spindle of the machine tool being configured to move in a longitudinal direction being axially arranged with respect to the spindle axis of the respective workpiece spindle, a respective associated workpiece guide channel assembly for receiving and guiding a respective one of the elongated workpieces, and each respective workpiece guide channel assembly includes a fixed guide channel portion and at least one slidable guide channel portion, the at least one slidable guide channel portion being movable into the longitudinal direction of the spindle axis of the respective associated workpiece spindle.

A machine control system for a multi-spindle machine includes a controller (42, 86). The controller is operative to reduce the risk of potentially damaging machining chip formation by controlled disengagement of a low speed clutch (18) of a transmission (14) which drives spindles (36) which rotate work pieces. Automatically selectively varying timing and duration of periods of disengagement of the low speed clutch breaks the continuity of chips to reduce the risk of developing damaging conditions as a result thereof.

A forward-facing two-spindle lathe includes a first main spindle device and a second main spindle device, a first turret device and a second turret device, each including multiple tools configured to perform machining on a workpiece gripped by a main spindle chuck of one or both of the first main spindle device and the second main spindle device, an auxiliary device disposed between the first main spindle device and the second main spindle device and configured to perform a predetermined operation such as machining on a workpiece gripped by the main spindle chuck of one or both of the first main spindle device and the second main spindle device, and a control device configured to control driving of the first main spindle device, the second main spindle device, the first turret device, the second turret device, and the auxiliary device.

A forward-facing two-spindle lathe includes a first main spindle device and a second main spindle device, a first turret device and a second turret device, each including multiple tools configured to perform machining on a workpiece gripped by a main spindle chuck of one or both of the first main spindle device and the second main spindle device, an auxiliary device disposed between the first main spindle device and the second main spindle device and configured to perform a predetermined operation such as machining on a workpiece gripped by the main spindle chuck of one or both of the first main spindle device and the second main spindle device, and a control device configured to control driving of the first main spindle device, the second main spindle device, the first turret device, the second turret device, and the auxiliary device.

Auxiliary spindle AS for clamping at least one workpiece W on a tool holder turret 200A-200D for machining operation, in particular a tool holder turret 200A-200D of a lathe having at least a spindle unit 310 configured to mount the auxiliary spindle AS onto turret port of a tool holder turret 200A-200D and receive a workpiece W for machining operation of the received workpiece W on the tool holder turret. In addition, the spindle unit 310 further includes at least a receiving unit 311 configured to clamp the workpiece W onto the auxiliary spindle AS.