A method for calibrating parameters includes a measurement step that obtains measurement data by scanning a defined surface; a correction step that obtains corrected data by correcting the measurement data based on the parameters; a determination step that calculates a roundness of the corrected data and determines whether the calculated roundness is equal to or less than a predetermined value; and an adjustment step that increases or reduces at least one of the parameters when the roundness is determined to be greater than the predetermined value, and the correction step, the determination step, and the adjustment step are repeated until the roundness is determined to be equal to or less than the predetermined value.

A rotary table includes: a stage; a rotary base configured to be rotated around a rotation center axis; a support mechanism that is disposed on the rotary base and supports the stage; a leveling adjustment mechanism configured to perform a leveling adjustment of the stage; and a transfer mechanism configured to transfer a rotative force of the rotary base to the stage. The transfer mechanism includes: an annular transfer member configured to receive the support mechanism therethrough; a first connecting mechanism that connects the transfer member and the rotary base and is rotatable around the first axis; and a second connecting mechanism that connects the transfer member and the stage and is rotatable around a second axis defined in a direction intersecting the first axis.

A measuring apparatus management system of the present invention includes an acquirer acquiring condition information indicating a status of a replacement component in each of a plurality of measuring apparatuses, and a predictor predicting a replacement time of the replacement component based on the condition information obtained by the acquirer.

A form measuring apparatus includes a base; an arm capable of swinging relative to the base; a coupler coupling the base and the arm, and having a deformation region that is capable of elastic deformation between the base and the arm; and a distortion detector installed in the deformation region. In the form measuring apparatus, a stylus is mounted to the arm and can slide along a surface of a work piece.

A rotary table including a placement surface with an object; a rotary base rotating the rotary table; a detector detecting displacement of a peripheral surface of the object; an angle adjustment mechanism adjusting an inclination angle of the rotary table; a position adjustment mechanism adjusting a position of the rotary table; a video acquisition unit acquiring a video of the rotary base; a display unit displaying an image based on the video; a position recognition unit recognizing images of the rotary table, rotary base, and object on the display unit and recognizing positions of the rotary table, rotary base, and object in a display space of the images; and a display control unit performing control of displaying a guide in a superimposing manner on the image on the display unit on a basis of the positions of the rotary table, rotary base, and object recognized by the position recognition unit.

The invention relates to a method for measuring and calculating geometric parameters of the wheels of a wheelset for rail vehicles, wherein the wheelset to be evaluated is rotatably mounted in a wheelset machine tool or in a wheelset diagnostic system and wherein measured values for profile measurement with respect to profile wear to be detected are determined during rotational motion of said wheelset. The problem addressed by the invention is to expand already available measuring methods on known wheelset machine tools and wheelset diagnostic systems in such a way that further geometric parameters can be detected and evaluated. This problem is solved in that methods for measuring and calculating the equivalent conicity and the radial run-out property of a wheelset are integrated as new measurement functions, wherein solution approaches are proposed for these additional methods.

A device for finding the runout of a machine spindle. The device includes a ball bearing mounted to the end of a short, precision shaft. The ball bearing includes a pattern of dots or similar markings on an upper face of an outer ring of the bearing. The device is mounted into a chuck attached to a spindle and is lowered to the level of an edge of a workpiece. A workpiece edge is moved toward the bearing of the device. A machinist zero's out a digital position readout of the machine's lead screw dial when the workpiece first contacts the bearing. The machinist determines the amount of runout of the spindle by observing the motion of the pattern on the bearing as the workpiece moves from first contact with the bearing to a point when the bearing stops moving.

A method for calculating eccentricity of rotor assembly axis based on radial runout measurement comprises matrix characterization of data and calculation of relative runout value at each point, establishment of a spring equivalent model and calculation of contact force, eccentric direction and magnitude; calculation of relative runout value; establishment of a spring equivalent model to analyze the relationship between force and displacement in each phase of a contact process, and then an uneven contact force at each point is obtained; and determination of eccentricity is to determine the magnitude of eccentricity. Based on the measured radial runout data in production practice, this method realizes the prediction of eccentricity of axis before assembly, improves the coaxiality of rotors after assembly, and has important practical guiding significance for axis prediction as well as assembly phase adjustment and optimization in the assembly process of aero-engine rotor pieces.

A linear drive mechanism which moves a detector having sensitivity in a first axial direction, relatively to a workpiece in a second axial direction orthogonal to the first axial direction, the linear drive mechanism includes: a drive shaft extending in the second axial direction; a mover which is supported in a non-contact fashion by the drive shaft and configured to move along the drive shaft integrally with the detector or the workpiece; a guide provided at a position deviated relative to the drive shaft in a third axial direction orthogonal to both the first axial direction and the second axial direction, the guide parallel to the drive shaft; and a resistance force generator which is provided on one of the mover and the guide, and is in contact with the other of the mover and the guide, the resistance force generator generates a resistance force which resists against movement of the mover.

There is provided a rotary stand capable of reducing the load on a feeder and deformation of a placement plane.

A rotary stand 100 includes a feeder 10 that adjusts an inclination of a placement plane 21. The feeder 10 includes a first contact portion 16 that interlocks with a feeding mechanism 12 to move and a second contact portion 14 pressurized by a spring 15. The first contact portion 16 and the second contact portion 14 disposed to face each other in the movement direction sandwich a held part 23 interlocking with the placement plane 21.