A machine tool includes a rotation indexing device. The rotation indexing device includes a frame accommodates a rotary shaft, a drive motor rotationally drives the rotary shaft, a drive transmission mechanism accommodated in a space inside the frame, and a detection device. The drive transmission mechanism includes a gear mechanism, and the space includes one or more storage parts for storing lubricating oil. The detection device detects a height position of an oil level of the lubricating oil, and is provided on a one-to-one basis with respect to a detection target storage part, which is set as a detection target, of the one or more storage parts.

A main spindle device for a machine tool including a rotary joint configured by a distributor fixedly provided to a frame and a shaft provided to be non-rotatable to a main spindle. The rotary joint is configured by a first rotary joint part and a second rotary joint part that are continuous in an axis line direction of a main spindle. The first rotary joint is the other end side of the frame and is configured by a first distributor having a shaft shape and a first shaft having a cylindrical shape, and the second rotary joint is configured by a second distributor having a cylindrical shape and a second shaft having a shaft shape.

A cam device includes: a cam unit, a reduction unit and a housing. The cam unit includes a rotating body and a cam. The rotating body includes a cam follower. The cam includes a cam surface that engages with the cam follower, and the cam is configured to rotate the rotating body by rotation of the cam. The reduction unit is provided between a motor and the cam, and includes a motor gear and a cam gear. The motor gear is mounted on a motor side of the reduction unit. The cam gear is mounted on a cam side of the reduction unit. The housing includes a first housing part and a second housing part as a unit. The first housing part accommodates the cam unit, and the second housing part accommodates the reduction unit.

A rotary table for a machine tool comprising a stator unit, a rotor unit rotatable at least about a rotational axis, wherein the rotor unit comprises at least one receiving unit for the reception of a workpiece, a first bearing unit for the mounting of the rotor unit in the stator unit, and an electromagnetic motor drive for the motorized driving of the rotor unit. The rotor unit, at least in the region of the motor drive and/or of the first bearing unit, has at least one rotor-cooling apparatus, comprising a cooling medium and at least one cooling surface, for the cooling and/or absorption of waste heat from the motor drive and/or from the first bearing unit.

There is provided a rotary table device including: a rotary table; a center shaft erected toward the rotary table; a housing including an inner peripheral surface having a circular cross section over a predetermined range along a rotation axis; a center sleeve including an outer peripheral surface having a circular cross section corresponding to the inner peripheral surface, and the outer peripheral surface being concentric with the inner peripheral surface; a plurality of recesses formed in at least one of the inner circumferential surface and the outer circumferential surface; a plurality of O-rings disposed to be sandwiched between the inner peripheral surface and the outer peripheral surface; an in-housing fluid flow path formed inside the housing; and a plurality of in-sleeve fluid flow paths formed inside the center sleeve.

A machining apparatus includes a first frame including a first surface formed along a Z-axis direction and a second surface formed along a Y-axis direction. An X-axis moving mechanism and a Z-axis moving mechanism are disposed on the first surface side of the first frame. A Y-axis moving mechanism is disposed on the second surface side of the first frame. A second frame supports the first frame from the second surface side of the first frame. An A-axis rotating mechanism, a B-axis rotating mechanism, and a supporting mechanism that supports an object to be machined are moved by the Y-axis moving mechanism. The t Y-axis moving mechanism is disposed in a space located below the first frame in the Z-axis direction, and formed by the second flame.

Provided is a clamp device of an indexing apparatus that indexes a main shaft, which is rotatably supported in an accommodation hole of a frame via a bearing, to a set angular position by rotating the main shaft by using a driving device. The clamp device includes a working channel that connects an air supply device, which supplies compressed air, to a pressure chamber in the clamp device. The clamp device operates to retain an angular position of the main shaft when compressed air is supplied from the air supply device. The clamp device includes a pressure transmitting portion that is interposed in the working channel and in which a piston is slidably disposed. A portion of the working channel on the pressure chamber side of the piston in the pressure transmitting portion is filled with an incompressible fluid.

An assembling equipment is for attaching a component to a workpiece. The assembling equipment includes a platform, a conveying mechanism, a first attaching mechanism, a film removing mechanism, and a second attaching mechanism. The conveying mechanism transports a positioning assembly carrying a workpiece to a first station. The first attaching mechanism attaches a first component with a protective film to the workpiece at the first station. The conveying mechanism transports the positioning assembly to a second station, and the film removing mechanism at the second station removes the protective film from the workpiece. The conveying mechanism transports the positioning assembly to a third station. The second attaching mechanism at the third station attaches a second component to the first component on the workpiece to be connected together. The assembling equipment reduces manual labor intensity and labor costs and improves efficiency of production and the product quality.

A rotation table mounted on a machining table of a machine tool includes a clamping mechanism which is driven by air so as to clamp a rotation shaft, and an air purging pressure is applied into a casing so as to prevent a cutting fluid or foreign matter from intruding into the casing of the rotation table. Then, air discharged from the clamping mechanism does not pass through the casing, to which the air purging pressure is applied, and is discharged to the outside of the rotation table through a flow passage.

A rotary index table comprising a plate, which has drivers that engage with a drive groove of a cam barrel, wherein the plate can be driven by the cam barrel to carry out a rotational movement about a rotational axis which in turn can be driven by a motor to carry out a rotational movement about the longitudinal axis thereof, and wherein the motor directly drives the cam barrel.