Abstract: A vibration diagnosis assistance device of an embodiment acquires, for each of a plurality of predetermined rotational speeds, swing frequency characteristics of a rotating shaft when a movable mechanism swings according to a first swing command signal or a second swing command signal in a state where the rotating shaft rotates according to a rotation command signal, and displays the acquired swing frequency characteristics on a display device.

Abstract: 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.

Abstract: A control device is configured to control operation of a drive unit and monitor a rotational balance of a rotating body, for a machine tool including the rotating body that is rotatable around a predetermined axial center in a state of fixing a workpiece and on which an adjusting tool that can adjust the rotational balance is arrangeable, and the drive unit that rotates the rotating body, and the control device includes: a physical quantity acquiring unit configured to acquire at least one physical quantity indicating a rotational state of the rotating body, the physical quantity being changed in response to an adjustment of the rotational balance; a comparing unit configured to compare a plurality of physical quantities having different acquisition times; and an output unit configured to output a comparison result.

Abstract: A machine tool includes: a first calculator configured to calculate a first frequency characteristic based on a first oscillation signal and a measurement signal of a physical quantity measured by a measurement unit when the drive shaft of a servo motor swings in accordance with the first oscillation signal; and a second calculator configured to calculate a second frequency characteristic based on a second oscillation signal and a measurement signal of the physical quantity measured by the measurement unit when the drive shaft of the servo motor swings in accordance with the second oscillation signal.

Abstract: A control device is configured to control operation of a drive unit and monitor a rotational balance of a rotating body, for a machine tool including the rotating body that is rotatable around a predetermined axial center in a state of fixing a workpiece and on which an adjusting tool that can adjust the rotational balance is arrangeable, and the drive unit that rotates the rotating body, and the control device includes: a physical quantity acquiring unit configured to acquire at least one physical quantity indicating a rotational state of the rotating body, the physical quantity being changed in response to an adjustment of the rotational balance; a comparing unit configured to compare a plurality of physical quantities having different acquisition times; and an output unit configured to output a comparison result.

Abstract: A supporting structure for supporting a device includes: a base portion configured to support the device; and a plurality of leg portions configured to support the base portion. At least one of the plurality of leg portions includes a height adjusting mechanism whose length is adjustable in a height direction of the base portion, and a ground contact member configured to make contact with a ground. The ground contact member is fixed to the base portion with the height adjusting mechanism sandwiched between the ground contact member and the base portion so as to fix the height adjusting mechanism, and the ground contact member has a ground contact surface formed in the shape of a convex-shaped curved surface.

Abstract: 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.

Abstract: A machine tool includes: a first calculator configured to calculate a first frequency characteristic based on a first oscillation signal and a measurement signal of a physical quantity measured by a measurement unit when the drive shaft of a servo motor swings in accordance with the first oscillation signal; and a second calculator configured to calculate a second frequency characteristic based on a second oscillation signal and a measurement signal of the physical quantity measured by the measurement unit when the drive shaft of the servo motor swings in accordance with the second oscillation signal.

Abstract: A supporting structure for supporting a device includes: a base portion configured to support the device; and a plurality of leg portions configured to support the base portion. At least one of the plurality of leg portions includes a height adjusting mechanism whose length is adjustable in a height direction of the base portion, and a ground contact member configured to make contact with a ground. The ground contact member is fixed to the base portion with the height adjusting mechanism sandwiched between the ground contact member and the base portion so as to fix the height adjusting mechanism, and the ground contact member has a ground contact surface formed in the shape of a convex-shaped curved surface.

Abstract: A rotor includes: a rotary member; a plurality of permanent magnets that are arranged on the outer circumferential side of the rotary member; and a cover tube that is provided on the side of an outer circumferential surface of the plurality of the permanent magnets and that is formed with a fiber bundle in which a plurality of fiber reinforced plastic filaments are arranged along a longitudinal direction, and the fiber bundle of the cover tube is spirally stacked in layers along a circumferential direction of the rotary member such that a part of the fiber bundle in a width direction is slackened.

Abstract: Provided is a rotor member that can contribute to an easy assembling operation and components thereof can be reused. The rotor member includes a magnet mounting member having a first end and a second end, a plurality of magnets arranged radially outwardly of the magnet mounting member, and a tubular holding member arranged radially outwardly of the plurality of magnets and holds the magnets between the holding member and the magnet mounting member. The magnet mounting member includes a slit that radially penetrates the magnet mounting member and extends in a predetermined axial-direction section.

Abstract: A rotor includes: a rotary member; a plurality of permanent magnets that are arranged on the outer circumferential side of the rotary member; and a cover tube that is provided on the side of an outer circumferential surface of the plurality of the permanent magnets and that is formed with a fiber bundle in which a plurality of fiber reinforced plastic filaments are arranged along a longitudinal direction, and the fiber bundle of the cover tube is spirally stacked in layers along a circumferential direction of the rotary member such that a part of the fiber bundle in a width direction is slackened.

Abstract: A rotator member 300 includes a tubular sleeve 301 having a first end surface and a second end surface, a plurality of magnet segments 311 circumferentially disposed at a radially outside of the sleeve 301, and a tubular member 321 adapted to cover the magnet segments 311 from a radially outside to hold the magnet segments 311 between the tubular member 321 and the sleeve 301. The sleeve 301 has an inner circumference surface that includes a tapered surface that gradually and outside the radial direction expands in a direction from the first end surface toward the second end surface.

Abstract: A rotor member includes a cylindrical sleeve part having a circular outer peripheral surface, a plurality of magnets arranged along the outer peripheral surface and including an inner peripheral surface having a curvature radius larger than a curvature radius of the outer peripheral surface, and a cylindrical holding member surrounding the plurality of magnets. Between the outer peripheral surface of the sleeve part and the inner peripheral surface of the magnets, a gap of a radial direction increased toward a circumferential edge portion of the magnets is formed.

Abstract: Provided is a rotor member that can contribute to an easy assembling operation and components thereof can be reused. The rotor member includes a magnet mounting member having a first end and a second end, a plurality of magnets arranged radially outwardly of the magnet mounting member, and a tubular holding member arranged radially outwardly of the plurality of magnets and holds the magnets between the holding member and the magnet mounting member. The magnet mounting member includes a slit that radially penetrates the magnet mounting member and extends in a predetermined axial-direction section.

Abstract: Provided is a rotor member that can contribute to an easy assembling operation and components thereof can be reused. The rotor member includes a magnet mounting member having a first end and a second end, a plurality of magnets arranged radially outwardly of the magnet mounting member, and a tubular holding member arranged radially outwardly of the plurality of magnets and holds the magnets between the holding member and the magnet mounting member. The magnet mounting member includes a slit that radially penetrates the magnet mounting member and extends in a predetermined axial-direction section.

Abstract: A rotor according to the present invention includes a rotating axis rotating about an axial center of the rotating axis and a rotor component member including an inner circumferential surface on which an outer circumferential surface of the rotating axis fits. The outer circumferential surface of the rotating axis and the inner circumferential surface of the rotor component member include corresponding tapered surfaces each having a diameter that varies in taper along the axial center, the tapered surfaces being in full contact with each other while the outer circumferential surface of the rotating axis is press-fitted relative to the inner circumferential surface of the rotor component member, and at least one of the tapered surfaces has a corrugated surface structure storing a lubricant before the rotating axis is press-fitted relative to the rotor component member, while configured to wear away by press-fitting the rotating axis relative to the rotor component member to discharge the lubricant.

Abstract: A magnet holding member capable of increasing the rotating speed and improving or maintaining reliability of a rotating electrical machine, a rotor having the magnet holding member, a rotating electrical machine having the rotor, and a machine tool having the rotating electrical machine. When one section between one axial end and another axial end of the rotor is referred to as one traverse, the holding member has a cylindrical shape formed by spirally winding a fiber bundle, which is unbroken over at least one traverse, on the outer periphery of the rotor, from one axial end to the other axial end. The holding member is constituted by an FRP having a resin as a matrix, and a terminal treatment by using reactive curable resin is carried out on at least one of a winding start end and a winding terminal end of the fiber bundle.

Abstract: A stator of a rotary electric machine includes a stator core and coils. The stator core is provided with a plurality of slots extending in an axial direction and being spaced apart from one another in a circumferential direction. The coils are wound around through the slots. The coils include coil end portions which protrude outward in the axial direction from an end surface of the stator core. The stator includes a restricting member situated on an inner side of the coil end portions in the radial direction. The restricting member serves to prevent deformation of the coil end portions inward in the radial direction.

Abstract: A rotator member 300 includes a tubular sleeve 301 having a first end surface and a second end surface, a plurality of magnet segments 311 circumferentially disposed at a radially outside of the sleeve 301, and a tubular member 321 adapted to cover the magnet segments 311 from a radially outside to hold the magnet segments 311 between the tubular member 321 and the sleeve 301. The sleeve 301 has an inner circumference surface that includes a tapered surface that gradually and outside the radial direction expands in a direction from the first end surface toward the second end surface.