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 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 method of controlling a worktop unit including a frame configured to support a worksurface and a leg configured to support the frame such that the frame is movable relative to the leg between a first position and a second position having a greater elevation than the first position; and a sensor configured to detect an environment beneath the worktop unit and/or a sensor configured to detect an acceleration of the frame, includes the steps of: determining whether a safety condition is satisfied, the safety condition being a condition for avoiding collision between the worktop unit and its environment; or a crush condition; and if the safety condition is satisfied, moving the frame between the first position and the second position.

A method of controlling a worktop unit including a frame configured to support a worksurface and a leg configured to support the frame such that the frame is movable relative to the leg between a first position and a second position having a greater elevation than the first position; and a sensor configured to detect an environment beneath the worktop unit and/or a sensor configured to detect an acceleration of the frame, includes the steps of: determining whether a safety condition is satisfied, the safety condition being a condition for avoiding collision between the worktop unit and its environment; or a crush condition; and if the safety condition is satisfied, moving the frame between the first position and the second position.

A working table for a reel-to-reel process includes: a supply reel configured to supply a workpiece; a collection reel configured to collect the workpiece after the workpiece is processed; a base on which the supply reel and the collection reel are installed; a processing workbench installed on the base to process the workpiece thereon; at least one balance adjuster installed on the base and configured to be moved according to weight variations of the supply reel and the collection reel; a balance drive unit configured to drive the at least one balance adjuster; and a controller configured to control the balance drive unit.

A working table for a reel-to-reel process includes: a supply reel configured to supply a workpiece; a collection reel configured to collect the workpiece after the workpiece is processed; a base on which the supply reel and the collection reel are installed; a processing workbench installed on the base to process the workpiece thereon; at least one balance adjuster installed on the base and configured to be moved according to weight variations of the supply reel and the collection reel; a balance drive unit configured to drive the at least one balance adjuster; and a controller configured to control the balance drive unit.

Spindle for carrying out machining assisted by non-ultrasonic axial oscillations, including a tool-bearing shaft, and an exciting portion, for subjecting the shaft to non-ultrasonic axial oscillations, especially during its rotation. The exciting portion including a first exciting stage, having at least one piezoelectric actuator, and a second exciting stage, having at least one piezoelectric actuator, having a non-zero axial overlap with the first exciting stage, the actuators of the two stages being arranged so that their effects add.

Spindle for carrying out machining assisted by non-ultrasonic axial oscillations, including a tool-bearing shaft, and an exciting portion, for subjecting the shaft to non-ultrasonic axial oscillations, especially during its rotation. The exciting portion including a first exciting stage, having at least one piezoelectric actuator, and a second exciting stage, having at least one piezoelectric actuator, having a non-zero axial overlap with the first exciting stage, the actuators of the two stages being arranged so that their effects add.

A precision machine tool includes: a tool support for supporting a tool; a tool table serving as a moving mechanism capable of moving the tool support; and one or multiple imaging devices fixed to the tool support, the imaging devices each having an imaging unit configured to capture the image of a machining point on a workpiece machined by the tool.

A precision machine tool includes: a tool support for supporting a tool; a tool table serving as a moving mechanism capable of moving the tool support; and one or multiple imaging devices fixed to the tool support, the imaging devices each having an imaging unit configured to capture the image of a machining point on a workpiece machined by the tool.