The present invention provides a surface following nozzle, an observation device for a moving object surface, and an observation method for the moving object surface that can remove water in the vicinity of the nozzle while following changes in the shape and changes in the distance of a moving object. A surface following nozzle includes a nozzle that injects gas from a tip end thereof, a separating part that closes a base end of the nozzle, and an extending and contracting part that is provided at a rear side of the nozzle via the separating part, and extends and contracts along an axial direction of the nozzle. The extending and contracting part includes an elastic body that applies a forward force with respect to the nozzle.

The present invention provides a surface following nozzle, an observation device for a moving object surface, and an observation method for the moving object surface that can remove water in the vicinity of the nozzle while following changes in the shape and changes in the distance of a moving object. A surface following nozzle includes a nozzle that injects gas from a tip end thereof, a separating part that closes a base end of the nozzle, and an extending and contracting part that is provided at a rear side of the nozzle via the separating part, and extends and contracts along an axial direction of the nozzle. The extending and contracting part includes an elastic body that applies a forward force with respect to the nozzle.

The invention relates to a fused filament fabrication device (1) comprising a print head (2) comprising a melt chamber (22) and a nozzle (4). The print head (2) is movably arranged relative to a build surface (10) in at least two perpendicular directions. A feeder (3) is arranged to feed filament material to the print head (2). A sensor is arranged to directly or indirectly measure a pressure in the melt chamber (22), the sensor producing pressure data. A flow sensor is arranged to measure a flow of filament into the print head (2) to obtain flow data. The device (1) also comprises a controller (7) arranged for a) controlling movement of the nozzle (4) over the build surface (10), b) controlling deposition of molten filament material on the build surface (10) during the movement of the nozzle (4), c) receiving the pressure data and the flow data, and d) determining a local height of the build surface (10) fora plurality of locations on the build surface (10), using the pressure data and the flow data.

The invention relates to a fused filament fabrication device (1) comprising a print head (2) comprising a melt chamber (22) and a nozzle (4). The print head (2) is movably arranged relative to a build surface (10) in at least two perpendicular directions. A feeder (3) is arranged to feed filament material to the print head (2). A sensor is arranged to directly or indirectly measure a pressure in the melt chamber (22), the sensor producing pressure data. A flow sensor is arranged to measure a flow of filament into the print head (2) to obtain flow data. The device (1) also comprises a controller (7) arranged for a) controlling movement of the nozzle (4) over the build surface (10), b) controlling deposition of molten filament material on the build surface (10) during the movement of the nozzle (4), c) receiving the pressure data and the flow data, and d) determining a local height of the build surface (10) fora plurality of locations on the build surface (10), using the pressure data and the flow data.

A measurement method for micro topography and roughness of internal surface of gap belongs to the technical field of precision measurement and is realized based on a measurement system which comprises a PC, a controller, a flexible mechanism and a measurement thin film. The measurement thin film has a copy function and is bonded to the flexible mechanism. The PC is connected with the flexible mechanism through the controller to control the flexible mechanism to expand or contract. The measurement method can effectively solve the measurement problem of the micro topography and surface roughness of the internal surface of the gap with a narrow inlet size. The method is simple and easy to operate, and the device is easy to carry, low in cost and high in measurement accuracy.

The present invention provides a surface following nozzle, an observation device for a moving object surface, and an observation method for the moving object surface that can remove water in the vicinity of the nozzle while following changes in the shape and changes in the distance of a moving object. A surface following nozzle includes a nozzle that injects gas from a tip end thereof, a separating part that closes a base end of the nozzle, and an extending and contracting part that is provided at a rear side of the nozzle via the separating part, and extends and contracts along an axial direction of the nozzle. The extending and contracting part includes an elastic body that applies a forward force with respect to the nozzle.

The present invention provides a surface following nozzle, an observation device for a moving object surface, and an observation method for the moving object surface that can remove water in the vicinity of the nozzle while following changes in the shape and changes in the distance of a moving object. A surface following nozzle includes a nozzle that injects gas from a tip end thereof, a separating part that closes a base end of the nozzle, and an extending and contracting part that is provided at a rear side of the nozzle via the separating part, and extends and contracts along an axial direction of the nozzle. The extending and contracting part includes an elastic body that applies a forward force with respect to the nozzle.

A measurement method for micro topography and roughness of internal surface of gap belongs to the technical field of precision measurement and is realized based on a measurement system which comprises a PC, a controller, a flexible mechanism and a measurement thin film. The measurement thin film has a copy function and is bonded to the flexible mechanism. The PC is connected with the flexible mechanism through the controller to control the flexible mechanism to expand or contract. The measurement method can effectively solve the measurement problem of the micro topography and surface roughness of the internal surface of the gap with a narrow inlet size. The method is simple and easy to operate, and the device is easy to carry, low in cost and high in measurement accuracy.

A measuring device used to measure a surface of an object is provided. The measuring system includes an air-flow generator, a light emitting device, and a light sensor. The airflow generator is located above the object, and is configured to inject a vapor flow onto the surface of the object and generates a condensing layer on the surface of the object. The light emitting device is located above the object and faces the condensing layer, and is configured to project a light towards the condensing layer. The light sensor is located above the object, and is configured to receive the light scattered by the condensing layer.

A measuring device used to measure a surface of an object is provided. The measuring system includes an air-flow generator, a light emitting device, and a light sensor. The airflow generator is located above the object, and is configured to inject a vapor flow onto the surface of the object and generates a condensing layer on the surface of the object. The light emitting device is located above the object and faces the condensing layer, and is configured to project a light towards the condensing layer. The light sensor is located above the object, and is configured to receive the light scattered by the condensing layer.