A machining apparatus includes: a shuttle unit (3) that holds a differential case (10) and rotates the differential case (10); a pair of opposed right and left machining units (4); and a tool support (6) that supports a tool (40) for machining the differential case (10), in which the pair of right and left machining units (4) each include a slide mechanism dedicated for uniaxial sliding in right and left directions, the shuttle unit (3) is movable in up and down directions and front and back directions, a tool attached to each of the pair of right and left machining units (4) enables machining an end portion of an inner surface of the differential case (10) and a flange hole of the differential case (10), the end portion surrounding a through hole, and a cutting edge of the tool (40) supported by the tool support (6) enables spherically cutting the inner surface of the differential case (10) held and rotated by the shuttle unit (3).

A gear machining apparatus includes a rough working tool having a plurality of replaceable tool blades attached to a tool main body, such that the tool blades are arranged in a circumferential direction of the tool main body and blade tips of the tool blades are oriented outward in a radial direction of the tool main body, a finish working tool having a plurality of tool blades provided to a tool main body in a similar manner to the rough working tool, and machining controllers control to perform rough and finish machinings on the workpiece, such that the working tools are rotated on center lines in axial directions of the working tools, the workpiece is rotated on a center line in axial direction of the workpiece, and the working tools are relatively moved to the workpiece along the center line in the axial direction of the workpiece.

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).

The tool holding device includes: a casing including a first surface, a second surface opposed to the first surface, and a first projection and a second projection projecting opposite to the first surface from the second surface; a first tool holding part disposed on the first surface at a position opposed to the first projection; a second tool holding part disposed on the first surface at a position opposed to the second projection; a driving-force input unit disposed at the end of the first projection and rotated by driving force being inputted; a first shaft extending in an axial direction perpendicular to the first surface and the second surface, the driving-force input unit and the first tool holding part being disposed at one end and the other end of the first shaft, respectively; a second shaft extending in the axial direction and having one end housed in the second projection, the second tool holding part being disposed at the other end of the second shaft; and a rotation transmitting unit rotating the second shaft in response to rotation of the first shaft.

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.

Provided is a turning and milling system, comprising: a work platform comprising a first drive mechanism; a rotating platform, said first drive driving said rotating platform to rotate on the said work platform and drive a workpiece to rotate about a vertical axis; a blade assembly comprising a blade and a second drive mechanism connected to the blade; said second drive mechanism drives the blade to move in the horizontal direction, changing the machining radius of the blade.

A machining apparatus includes: a shuttle unit (3) that holds a differential case (10) and rotates the differential case (10); a pair of opposed right and left machining units (4); and a tool support (6) that supports a tool (40) for machining the differential case (10), in which the pair of right and left machining units (4) each include a slide mechanism dedicated for uniaxial sliding in right and left directions, the shuttle unit (3) is movable in up and down directions and front and back directions, a tool attached to each of the pair of right and left machining units (4) enables machining an end portion of an inner surface of the differential case (10) and a flange hole of the differential case (10), the end portion surrounding a through hole, and a cutting edge of the tool (40) supported by the tool support (6) enables spherically cutting the inner surface of the differential case (10) held and rotated by the shuttle unit (3).

A tool carrier assembly for use at a machine tool, which includes at least one workpiece-carrying spindle for rotatably driving a workpiece received in the workpiece-carrying spindle. The tool carrier assembly includes a first slide being movable in a first direction, a tool carrier being supported on the first slide and configured to hold a plurality of tools, a tool drive unit including a tool drive for engaging with one of the plurality of tools held by the tool carrier to rotatably drive said tool, when the tool is arranged at a tool drive position with respect to the tool drive, and a drive mechanism for driving movement of the first slide together with the tool carrier in the first direction relative to the tool drive position, when the tool drive is disengaged with the tool, to relatively move another tool of the plurality of tools into the tool drive position.

The tool holding device includes: a casing including a first surface, a second surface opposed to the first surface, and a first projection and a second projection projecting opposite to the first surface from the second surface; a first tool holding part disposed on the first surface at a position opposed to the first projection; a second tool holding part disposed on the first surface at a position opposed to the second projection; a driving-force input unit disposed at the end of the first projection and rotated by driving force being inputted; a first shaft extending in an axial direction perpendicular to the first surface and the second surface, the driving-force input unit and the first tool holding part being disposed at one end and the other end of the first shaft, respectively; a second shaft extending in the axial direction and having one end housed in the second projection, the second tool holding part being disposed at the other end of the second shaft; and a rotation transmitting unit rotating the second shaft in response to rotation of the first shaft.

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.