The rotary table system includes a first rotary table coupled to one end side of a member for loading a workpiece, a second rotary table coupled to an other end side, a motor that rotationally drives the member for loading a workpiece, a first clamping mechanism that can clamp the first rotary table, a second clamping mechanism that can clamp the second rotary table, a clamp torque measuring device, a first operating passage that sends a clamping operation instruction to the first clamping mechanism, and a second operating passage that sends a clamping operation instruction to the second clamping mechanism, in which the clamp torque measuring device measures clamp torque individually for each of the first, second clamping mechanisms by individually selecting the first, second operating passage and causing the first, second clamping mechanisms to individually perform a clamping operation.

A workpiece lifting and lowering device is provided with: a workpiece base supported as to be capable of being lifted and lowered, and mounting a workpiece; a link mechanism connected to the workpiece base, and lifting and lowering the workpiece base by converting a rotation motion to a lifting and lowering motion; and a driving mechanism rotationally driving the link mechanism through a transmission member.

The present invention is concerned with an apparatus for simulating the chewing process for the purpose of testing dental materials and implants and for the purpose of analyzing food samples. The apparatus comprises a frame, a stationary platform connected compliantly to the said frame and a moving platform corresponding to the maxillae and mandible of humans or animals, to which dentures or teeth are affixed. The moving platform is guided and driven in mandibular motion using six rods fitted with spherical joints at both ends. Said ball-jointed rods are attached with one end to the moving platform, and with the other end either to the frame of the apparatus, or to rotary cranks driven synchronously by a motor via a transmission. The rotary cranks together with their motor and transmission are mounted on a carrier which is adjustably attached to the frame of the apparatus. To closely reproduce a desired mandibular motion, the locations of the spherical joints to the frame, the position and orientation of the carrier relative to the frame, and the lengths of the rotary cranks and of the ball-jointed rods are suitably adjusted.

A machine tool includes a trough which collects chips; a mobile unit which is located above the trough and moves in the longitudinal direction of the trough on a bed, is configured from a first beam member, a second beam member, and a connecting member connecting the first beam member and the second beam member, and is formed with a hollow that opens toward the trough from above; a first guide which supports the mobile unit in such a manner that the mobile unit is movable in the longitudinal direction of the trough; a second guide which faces the first guide across the trough, and supports the mobile unit in such a manner that the mobile unit is movable in the longitudinal direction of the trough; and a cradle, both ends of which are supported by the first beam member and the second beam member.

The present invention is concerned with an apparatus for simulating the chewing process for the purpose of testing dental materials and implants and for the purpose of analyzing food samples. The apparatus comprises a frame, a stationary platform connected compliantly to the said frame and a moving platform corresponding to the maxillae and mandible of humans or animals, to which dentures or teeth are affixed. The moving platform is guided and driven in mandibular motion using six rods fitted with spherical joints at both ends. Said ball-jointed rods are attached with one end to the moving platform, and with the other end either to the frame of the apparatus, or to rotary cranks driven synchronously by a motor via a transmission. The rotary cranks together with their motor and transmission are mounted on a carrier which is adjustably attached to the frame of the apparatus. To closely reproduce a desired mandibular motion, the locations of the spherical joints to the frame, the position and orientation of the carrier relative to the frame, and the lengths of the rotary cranks and of the ball-jointed rods are suitably adjusted.

The rotary table system includes a first rotary table coupled to one end side of a member for loading a workpiece, a second rotary table coupled to an other end side, a motor that rotationally drives the member for loading a workpiece, a first clamping mechanism that can clamp the first rotary table, a second clamping mechanism that can clamp the second rotary table, a clamp torque measuring device, a first operating passage that sends a clamping operation instruction to the first clamping mechanism, and a second operating passage that sends a clamping operation instruction to the second clamping mechanism, in which the clamp torque measuring device measures clamp torque individually for each of the first, second clamping mechanisms by individually selecting the first, second operating passage and causing the first, second clamping mechanisms to individually perform a clamping operation.

A machine tool includes a trough which collects chips; a mobile unit which is located above the trough and moves in the longitudinal direction of the trough on a bed, is configured from a first beam member, a second beam member, and a connecting member connecting the first beam member and the second beam member, and is formed with a hollow that opens toward the trough from above; a first guide which supports the mobile unit in such a manner that the mobile unit is movable in the longitudinal direction of the trough; a second guide which faces the first guide across the trough, and supports the mobile unit in such a manner that the mobile unit is movable in the longitudinal direction of the trough; and a cradle, both ends of which are supported by the first beam member and the second beam member.

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.

A workpiece lifting and lowering device is provided with: a workpiece base supported as to be capable of being lifted and lowered, and mounting a workpiece; a link mechanism connected to the workpiece base, and lifting and lowering the workpiece base by converting a rotation motion to a lifting and lowering motion; and a driving mechanism rotationally driving the link mechanism through a transmission member.

A machine tool includes a stationary machine frame, a tool head, which is able to be positioned relative to the machine frame along three mutually orthogonal translation axes, and a motor-driven tool. The machine tool includes a swivel unit, which can be pivoted about a horizontal swivel axis relative to the machine frame and includes a workpiece positioning device, via which a workpiece can be rotated about an axis of rotation oriented perpendicularly to the swivel axis. The swivel unit is assigned a measuring frame, which is able to be rotated with the swivel unit and is arranged to be thermally and/or mechanically decoupled from the swivel unit and includes components of a first and second position measuring system. Additional components of the first position measuring system are disposed on the tool head, and further components of the second position measuring system are situated on the workpiece positioning device. The spatial position of the tool head in relation to the measuring frame is ascertained via the first position measuring system, and the spatial position of the workpiece positioning device in relation to the measuring frame takes place via the second position measuring system.