A measurement device includes: a probe part including a probe configured to measure a surface of an object to be measured and is attached so as to swing around a swing center according to a shape of the surface of the object to be measured; a scale configured to measure displacement by swinging of the probe part; a scale head configured to read a scale mark of the scale; and an arm part to which the probe part is attached, the arm part is attached so as to swing around the swing center integrally with the probe part, and the scale is attached to the arm part. When thermal expansion coefficients of the probe part, the arm part and the scale are α, β and γ respectively, the measurement device satisfies a condition of

[00001]$\left(\alpha +\gamma \right)-1\text{}/\text{}2\alpha \text{}\le \text{}\beta \text{}\le \text{}\left(\alpha +\gamma \right)+1\text{}/\text{}2\alpha .$

A measurement device includes: a probe part including a probe configured to measure a surface of an object to be measured and is attached so as to swing around a swing center according to a shape of the surface of the object to be measured; a scale configured to measure displacement by swinging of the probe part; a scale head configured to read a scale mark of the scale; and an arm part to which the probe part is attached, the arm part is attached so as to swing around the swing center integrally with the probe part, and the scale is attached to the arm part. When thermal expansion coefficients of the probe part, the arm part and the scale are α, β and γ respectively, the measurement device satisfies a condition of

[00001]$\left(\alpha +\gamma \right)-1\text{}/\text{}2\alpha \text{}\le \text{}\beta \text{}\le \text{}\left(\alpha +\gamma \right)+1\text{}/\text{}2\alpha .$

A method of determining a form measurement for a curved feature of an artefact. The method includes a positioning apparatus relatively moving the artefact and a measurement device relative along a curved path in a first direction, to obtain a first set of data points along the surface of the curved feature, and the positioning apparatus relatively moving the artefact and the measurement device other along a curved path in a second direction, opposite to the first direction, to obtain a second set of data points along the surface of the curved feature. The method further includes using the first and second sets of data points to determine a form measurement for the artefact.

A form measuring instrument includes: a contact tip configured to contact with a workpiece; a movement mechanism configured to cause relative movement of the contact tip with respect to the workpiece; a movement controlling unit configured to control the movement mechanism; a contact sensor configured to detect a contact amount of the contact tip with the workpiece and output a detection signal corresponding to the contact amount; and an abnormality determining unit configured to determine an abnormality of sensitivity of the contact sensor based on a change in the detection signal outputted from the contact sensor during an operation of the movement mechanism in which the contact tip is pressed against the workpiece.

A form measuring instrument includes: a contact tip configured to contact with a workpiece; a movement mechanism configured to cause relative movement of the contact tip with respect to the workpiece; a movement controlling unit configured to control the movement mechanism; a contact sensor configured to detect a contact amount of the contact tip with the workpiece and output a detection signal corresponding to the contact amount; and an abnormality determining unit configured to determine an abnormality of sensitivity of the contact sensor based on a change in the detection signal outputted from the contact sensor during an operation of the movement mechanism in which the contact tip is pressed against the workpiece.

A device (1) for measuring a valve seat formed in a piece has an elongate shape and defines a longitudinal axis (A), and includes: a slide (9), slidingly coupled to a guide (11) for translating in a scanning direction (B) inclined to the longitudinal axis; a sensor (10), mounted on the slide for measuring a parameter relating to a profile of the seat; a processing unit connected to the sensor; a rotary actuator (13) defining a longitudinal rotation axis substantially parallel to the longitudinal axis of the device; and a transmission assembly interposed between the rotary actuator and the slide for transforming a rotary motion about a longitudinal rotation axis in a reciprocating linear motion of the slide along the scanning direction.

A device (1) for measuring a valve seat formed in a piece has an elongate shape and defines a longitudinal axis (A), and includes: a slide (9), slidingly coupled to a guide (11) for translating in a scanning direction (B) inclined to the longitudinal axis; a sensor (10), mounted on the slide for measuring a parameter relating to a profile of the seat; a processing unit connected to the sensor; a rotary actuator (13) defining a longitudinal rotation axis substantially parallel to the longitudinal axis of the device; and a transmission assembly interposed between the rotary actuator and the slide for transforming a rotary motion about a longitudinal rotation axis in a reciprocating linear motion of the slide along the scanning direction.

A force sensed surface scanning system (20) employs a scanning robot (41) and a surface scanning controller (50). The scanning robot (41) includes a surface scanning end-effector (43) for generating force sensing data informative of a contact force applied by the surface scanning end-effector (43) to an anatomical organ. In operation, the surface scanning controller (50) controls a surface scanning of the anatomical organ by the surface scanning end-effector (43) including the surface scanning end-effector (43) generating the force sensing data, and further constructs an intraoperative volume model of the anatomical organ responsive to the force sensing data generated by the surface scanning end-effector (43) indicating a defined surface deformation offset of the anatomical organ.

The invention provides a method of inspecting a wind turbine blade. The method includes providing a defect inspection tool having an array of pins, the pins being displaceable in an axial direction relative to one another. The method includes positioning the defect inspection tool against a defect on the wind turbine blade to cause displacement of at least some of the pins in the axial direction, the displaced pins describing a contour representative of a contour of the defect. The method includes determining dimensions f the defect by inspecting the contour described by the displaced pins. Advantageously, the invention provides for a more accurate determination as to whether a defect needs to be repaired.

System (100) for checking the presence of thickness restrictions on at least one mechanical component (1), comprising at least one base (2) for fixing said mechanical component (1) coming from a production line (200) to a plurality of fixing points (L1, L2, L3), and measuring means (3) to measure the thickness of said mechanical component (1) next to at least one control point (P) of said mechanical component (1) to be checked, characterized in that said measuring means (3) comprise at least one mechanical robotic arm (30) adapted to be moved in the direction of said at least one control point (P), wherein said mechanical robotic arm comprises at least one ultrasonic probe (31) for the ultrasonic measurement of the thickness of said mechanical component (1) next to said at least one control point (P), said ultrasonic probe (31) being positionable in the proximity of said at least one control point (P) so that the ultrasonic wave emitted by said ultrasonic probe (31) travels along a direction (Q) substantially orthogonal to the plane (T) tangent to the surface (S) of said mechanical component (1) next to said at least one control point (P) to be checked.