A sensor is placed on a plate lowered into the hollow of the shaft and guided by taut wires between a lower attachment device and an upper motorized winder. The deformations, responsible for measurement errors and caused either by static deformations, produced by the weight or poor construction of the apparatus, or by vibrations, are to a large extent eliminated.

An optical inner-surface measurement device includes: an optical fiber included inside a tube, the optical fiber being configured to be inserted into a hole of an inspection object; at least two optical-path converting elements disposed in a forward-end of the optical fiber; and a motor for rotationally driving at least one of the at least two optical-path converting elements. The at least two optical-path converting elements emit a light beam, guided thereto through the optical fiber, to an inner peripheral surface of the hole of the inspection object three-dimensionally in a circumferential direction and an axial direction of the hole.

An optical inner-surface measurement device includes: an optical fiber included inside a tube, the optical fiber being configured to be inserted into a hole of an inspection object; at least two optical-path converting elements disposed in a forward-end of the optical fiber; and a motor for rotationally driving at least one of the at least two optical-path converting elements. The at least two optical-path converting elements emit a light beam, guided thereto through the optical fiber, to an inner peripheral surface of the hole of the inspection object three-dimensionally in a circumferential direction and an axial direction of the hole.

Provided is an information processing apparatus including: an input unit into which shape data of a surface to be measured including a plurality of recesses is input; and a setting unit that detects each of the plurality of recesses on the basis of the input shape data and sets, for the detected recess, a region to be removed including the recess.

An inner-wall measuring instrument includes: a placement surface on which an object to be measured is placed; a base relatively movable with respect to the placement surface in three axis directions orthogonal to one another; a touch probe that is disposed at a first position of the base and brought into contact with the object; an image probe that is disposed at a second position of the base and capable of imaging the object with a direction parallel to the placement surface being an imaging direction; a rotational drive unit that rotates the image probe around an axis extending in a direction perpendicular to the placement surface; a linear drive unit that moves the image probe in the imaging direction; and a calculator that calculates an offset amount between the touch probe disposed at the first position and the image probe disposed at the second position.

A surface texture measuring apparatus includes an X axis displacement mechanism and a Y axis displacement mechanism displacing a measurable object having an interior wall along an XY plane; a measurement sensor measuring a surface texture of the interior wall without contact; a Z axis displacement mechanism displacing the measurement sensor in a Z axis direction orthogonal to the XY plane and bringing the measurement sensor to face the interior wall; a W axis displacement mechanism displacing the measurement sensor facing the interior wall in a normal direction of the interior wall; and a θ axis displacement mechanism displacing the measurement sensor facing the interior wall along the interior wall.

A surface texture measuring apparatus includes: a measurement sensor measuring, without contact, a surface texture of an interior wall of a cylinder portion of a measurable object while displacing in a normal direction of the interior wall at each measurement region into which the interior wall is divided in a circumferential direction of the cylinder portion; a W axis displacer displacing the measurement sensor in a W axis direction; a θ axis displacer displacing the measurement sensor in the circumferential direction, after measurement of the surface texture of a first measurement region, such that the measurement sensor faces a second measurement region adjacent to the first measurement region in the circumferential direction; and a controller adjusting a W axis direction measurement position for measuring the surface texture of the second measurement region while displacing the measurement sensor in the W axis direction.

The purpose of the present invention is to provide a shape measuring device and method, wherein the separation of light from one distance sensor increases measurement precision without increasing the size of the device. The present invention provides “a shape measuring device comprising: a distance sensor that radiates a laser toward a measurement target and detects the reflected light so as to calculate the distance to a measurement point; a separation unit that separates the light from the distance sensor into a plurality of light rays; a rotation unit that rotates the distance sensor and the measurement target relative to each other; and a data processing unit that integrates measurement results obtained from the distance sensor for the distances to a plurality of measurement points.”

The purpose of the present invention is to provide a shape measuring device and method, wherein the separation of light from one distance sensor increases measurement precision without increasing the size of the device. The present invention provides “a shape measuring device comprising: a distance sensor that radiates a laser toward a measurement target and detects the reflected light so as to calculate the distance to a measurement point; a separation unit that separates the light from the distance sensor into a plurality of light rays; a rotation unit that rotates the distance sensor and the measurement target relative to each other; and a data processing unit that integrates measurement results obtained from the distance sensor for the distances to a plurality of measurement points.”

A method, system and apparatus are provided in accordance with example embodiments for optically measuring workpiece features, and more particularly, to optically measure internal surfaces of round bores and countersinks. Methods include: advancing a probe through a bore and a countersink; and measuring dimensions of the bore and the countersink using a bore laser cone and a countersink laser cone, where the bore laser cone is received at the bore camera lens in response to reflecting from a first reflective surface of the probe to a surface of the bore to a third reflective surface of the probe and to the bore camera lens, and where the countersink laser cone is received at the countersink camera lens in response to the countersink laser cone reflecting from a second reflective surface of the probe to a surface of the countersink to a countersink beam reflector and to the countersink camera lens.