The present disclosure is directed toward a method for measuring a true concentricity of a rotating shaft. The method includes simultaneously measuring, with diametrically opposed position sensors, opposite sides of the rotating shaft at an initial state to acquire a first measurement data and at a 180-degree rotation to acquire a second measurement data. The method further determines a rotational centerline and a shaft centerline based on the first and second measurement data, and calculates a concentricity error of the rotating shaft based on the determined rotational centerline and the shaft centerline.

A method including the following steps: clamping and centering a toothing on a measuring spindle of a coordinate measuring machine; and measuring a geometry of a toothing using an optical measuring system of the coordinate measuring machine. The toothing is rotated during the measurement by a rotation of the measuring spindle. A rotational speed of the measuring spindle is adjusted and/or increased or decreased depending on a tolerance class of the toothing to be measured.

A method for detecting a phase on a gear includes obtaining a first determination result indicating whether the gear has been detected at a first detection position. A second determination result indicating whether the gear has been detected at a second detection position is obtained. A third angle between the first and second angles is obtained. A third determination result indicating whether the gear has been detected at a third detection position is obtained. The first angle is replaced with the third angle when the third and first determination results are same, or the second angle is replaced with the third angle when the third and first determination results are different. The phase on the gear is detected based on an angle that is between the first angle and the second angle.

Method for analyzing surface waviness of tooth flanks of a gearwheel, comprising: measuring two or more teeth of the gearwheel, wherein a deviation of their tooth flank geometry from the setpoint geometry is measured along at least one measuring path on each of the teeth; measuring at least one further tooth, wherein a deviation of its tooth flank geometry from the setpoint geometry is measured along at least one partial measuring path whose length is less than the length of the measuring path; and/or measuring at least one further tooth, wherein a deviation of the tooth flank geometry from the setpoint geometry is measured by touching at least one point on the tooth flank; associating a rotational angle with each measured value and determining a geometrically captured order spectrum by order analysis of the deviations plotted over the rotational angle, wherein one or more compensation and/or interpolation functions are determined.

An object is to measure the shape of an object to be measured under a more appropriate condition. A shape measuring device includes a projection unit configured to project a pattern onto a measurement target by light, an image capturing unit configured to capture a picture image of the measurement target onto which the pattern is projected by the projection unit, a movement unit capable of moving a projected position of the pattern on the measurement target by relatively moving the projection unit and the measurement target, and a region-of-interest setting unit configured to set a region of interest for acquiring information used to measure the measurement target to be in at least part of a region captured by the image capturing unit, so as to include an image of the pattern.

The present disclosure is directed toward a system that includes a first optical sensor, a second optical sensor, and a gear feature controller. The first optical sensor measures a plurality of first distances measured from a first reference point to a surface provided between a pair of adjacent teeth among a plurality of teeth circumferentially distributed about a first side of a gear. The second optical sensor measures a plurality of second distances measured from a second reference point to a surface along a second side of the gear opposite the first side. The gear feature controller configured to determine a stock removal amount of the gear based on the first distances and the second distances.

The present disclosure is directed toward a system that includes a first optical sensor, a second optical sensor, and a gear feature controller. The first optical sensor measures a plurality of first distances measured from a first reference point to a surface provided between a pair of adjacent teeth among a plurality of teeth circumferentially distributed about a first side of a gear. The second optical sensor measures a plurality of second distances measured from a second reference point to a surface along a second side of the gear opposite the first side. The gear feature controller configured to determine a stock removal amount of the gear based on the first distances and the second distances.

A fixture for gauging a bevel gear product that is received on a mount and rotated relative to a base while a plurality of measuring lasers and a rotational position sensor are operated. Data from the measuring lasers and the rotational position sensor are employed by a controller to generate one or more data sets. The data set(s) include dimensional information on the bevel gear product as a function of a rotational position of the bevel gear product about the mount axis. Various dimensions of the bevel gear product are gauged by the controller based on information in the data set(s).

An inspection system is provided with an inspection device configured to examine the external features of an object; and a control device for controlling the inspection device; the inspection device including: a substantially column-shaped first barrel that includes a first through hole configured for an object to pass therethrough; and a plurality of imaging units provided on the inner peripheral surface which forms the first through hole in the first barrel; and the control device including: an image processing unit configured to process an image captured and output by each of the imaging units for the purpose of inspection.

A method for gauging a bevel gear product that includes rotating the bevel gear product about a mount axis while collecting data from several measuring lasers to obtain one or more data sets. The data set(s) include dimensional information on the bevel gear product as a function of a rotational position of the bevel gear product about the mount axis. Various dimensions of the bevel gear product are gauged based on information in the data set(s).